Document And Entity Information Note To Financial Statement Details Textual statementsignificantaccountingpoliciespolicies statementnote2compositionofcertainfinancialstatementcaptionstables statementnote3retirementandotherbenefitplanstables us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable Income taxes payable statementnote4incometaxestables Actuarial (gain) loss statementnote6contingenciesandcommitmentstables Change in accumulated postretirement healthcare obligation: statementnote7segmentinformationtables Change in plan assets: Represents the change in plan assets of a defined benefit plan. Segment Reporting Disclosure [Text Block] statementnote2compositionofcertainfinancialstatementcaptionsscheduleofinventoriesdetails Change in benefit obligations: Represents the change in benefit obligation of a defined benefit plan. statementnote3retirementandotherbenefitplanesnetpensioncostdetails statementnote3retirementandotherbenefitplansnetpensioncostsandbenefitobligationsdeterminedusingassumptionsdetails Fiscal Period, Policy [Policy Text Block] statementnote3retirementandotherbenefitplansbenefitobligationplanassetsandfundedstatusofplansdetails statementnote3retirementandotherbenefitplansactualandtargetallocationforplanassetsdetails Large Cap Equities [Member] Represents large cap equities. Mid Cap Equities [Member] Represents mid-cap equities. statementnote3retirementandotherbenefitplansfairvalueofpensionplanassetsdetails Inventory Disclosure [Text Block] SmallCapEquitiesMember Represents small cap equities. statementnote3retirementandotherbenefitplansexpectedpaymentsforpensionbenefitsdetails Schedule of Inventory, Current [Table Text Block] International Including Non US Fixed Income [Member] Represents international including non US fixed income equities. statementnote3retirementandotherbenefitplansexpectedpaymentsforexecutivepostretirementbenefitsdetails Fixed Income [Member] Represents fixed income securities. statementnote3retirementandotherbenefitplansnetperiodicpostretirementhealthcarecostdetails Other Government Corporate Bonds [Member] Represents other government corporate bonds. statementnote3retirementandotherbenefitplansweightedaverageassumptiondetails Fair Value of Pension Plan Assets [Table Text Block] Tabular presentation of the fair value of pension plan assets and the level under which fair values were determined. statementnote3retirementandotherbenefitplansestimatedeffectofa1increaseinhealthcarecosttrendratedetails statementnote3retirementandotherbenefitplansestimatedeffectofa1decreaseinhealthcarecosttrendratedetails Executive Post-retirement Benefits [Member] Represents executive post-retirement benefits. statementnote3retirementandotherbenefitplanshealthcareobligationandfundedstatusofplandetails us-gaap_IncreaseDecreaseInAccruedLiabilities Accrued payroll, advertising and other expenses Net Periodic Post-retirement Healthcare Cost [Table Text Block] Represents net periodic post-retirement healthcare cost. statementnote3retirementandotherbenefitplansexpectedpaymentsforpostretirementbenefitsdetails statementnote4incometaxesprovisionfortaxesonincomedetails statementnote4incometaxestaxprovisiondiffersfromapplyingstatutoryfederalincometaxratedetails Current portion of non-current liabilities statementnote4incometaxesdeferredincometaxesresultsfromdifferencesinthebasesofassetsandliabilitiesdetails statementnote4incometaxesreconciliationofunrecognizedtaxbenefitsdetails Plan Asset Categories [Domain] statementnote6contingenciesandcommitmentscontingenciesandcommitmentsdetails statementnote7segmentinformationsegmentinformationdetails Notes To Financial Statements Defined Benefit Plan, Asset Categories [Axis] Notes To Financial Statements [Abstract] us-gaap_PolicyTextBlockAbstract Accounting Policies Pension and Other Postretirement Benefits Disclosure [Text Block] us-gaap_IncreaseDecreaseInAccountsPayable Accounts payable us-gaap_OfficersCompensation Officers' Compensation One Percent Increase in Healthcare Cost Trend Rate [Member] Represents a 1% increase in healthcare cost trend rate. Post-retirement Healthcare Benefits [Member] Represents post-retirement healthcare benefits. Incentive Compensation Current Asset [Member] Represents incentive compensation, current asset class. us-gaap_ConcentrationRiskPercentage1 Concentration Risk, Percentage State Taxes Current Asset [Member] Represents state taxes, current asset class. us-gaap_DeferredCompensationCashbasedArrangementsLiabilityClassifiedNoncurrent Incentive compensation us-gaap_ComprehensiveIncomeNetOfTax Comprehensive income, net of tax brid_CapitalLeaseTerm Capital Lease Term Represents the capital lease term. Schedule of Future Minimum Lease Payments for Operating and Capital Leases [Table Text Block] Represents the schedule of future minimum lease payments for operating capital leases. Total, 2017 "Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for capital leases and operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. " Total, 2018 Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for capital leases and operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Sales Revenue, Net [Member] brid_CapitalAndOperatingLeasesFutureMinimumPaymentsDue Total, Minimum Lease Payments(a) Amount of required minimum rental payments for capital leases and operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. us-gaap_Revenues Sales Preferred stock, shares outstanding (in shares) us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities Non-current liabilities Accounts Receivable [Member] Frozen Food Products [Member] Represents frozen food products business segment. Common stock, outstanding (in shares) Refrigerated and Snack Food Products [Member] Represents refrigerated and snack food products business segment. Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Axis] us-gaap_CashEquivalentsAtCarryingValue Cash Equivalents, at Carrying Value Cash and cash equivalents Cash and cash equivalents at beginning of year Cash and cash equivalents at end of year us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount Tax valuation allowance Other Other non-current assets: us-gaap_DeferredTaxAssetsNetNoncurrent Non-current tax assets, net us-gaap_OtherPostretirementBenefitsPayableCurrentAndNoncurrent Other Postretirement Benefits Payable us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent Postretirement healthcare benefits us-gaap_IncreaseDecreaseInPrepaidExpense Prepaid expenses us-gaap_DeferredTaxAssetsOther Other Customer Concentration Risk [Member] Concentration Risk Type [Axis] Concentration Risk Type [Domain] us-gaap_DeferredTaxAssetsInventory Inventory overhead capitalization Insurance Premiums Revenue Recognition, Policy [Policy Text Block] us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment Depreciation us-gaap_DeferredTaxAssetsStateTaxes State taxes us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves Inventory packaging reserve us-gaap_StockRepurchasedAndRetiredDuringPeriodShares Shares repurchased and retired (in shares) us-gaap_StockRepurchasedAndRetiredDuringPeriodValue Shares repurchased and retired Net sales us-gaap_IncreaseDecreaseInIncomeTaxesReceivable Refundable income taxes us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReturnsAndAllowances Returns allowance us-gaap_IncreaseDecreaseInAccountsReceivable Accounts receivable us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts Receivables allowance us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits Employee benefits us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses Incentive compensation us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits Pension and health care benefits Subsequent Events, Policy [Policy Text Block] Fair Value Measurement, Policy [Policy Text Block] us-gaap_DeferredTaxAssetsOperatingLossCarryforwards Net operating loss carry-forward and credits Segment Reporting, Policy [Policy Text Block] Lease, Policy [Policy Text Block] us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfDomesticSubsidiaries Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Domestic Subsidiaries us-gaap_IncreaseDecreaseInOtherNoncurrentAssets Other non-current assets Net periodic postretirement healthcare (benefit) cost Net pension cost Comprehensive Income, Policy [Policy Text Block] us-gaap_IncreaseDecreaseInInventories Inventories Cash surrender value benefits Cash Surrender Value of Life Insurance Income Tax, Policy [Policy Text Block] us-gaap_PromotionalAllowances Promotional Allowances brid_DefinedBenefitPlanEliminationOfFsaCost Eliminate FSA The amount of payments related to the elimination of flexible spending accounts (FSA) during the period. us-gaap_LiabilitiesAndStockholdersEquity Total liabilities and shareholders’ equity Retained earnings Accumulated other comprehensive loss Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Advertising Costs, Policy [Policy Text Block] State us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit State Changes in operating assets and liabilities: Federal us-gaap_DeferredFederalIncomeTaxExpenseBenefit Federal us-gaap_DeferredFederalStateAndLocalTaxExpenseBenefit Deferred income taxes Statement of Comprehensive Income [Abstract] Deferred: us-gaap_CurrentFederalStateAndLocalTaxExpenseBenefit us-gaap_OtherComprehensiveIncomeOtherNetOfTax Change in other comprehensive (loss), net of tax Asset Class [Domain] Asset Class [Axis] Other non-current assets Revenue Recognition, Policy [Policy Text Block] Common stock, $1.00 par value Authorized, - 20,000 shares; issued and outstanding – 9,076 and 9,080 us-gaap_TableTextBlock Notes Tables Common stock, issued (in shares) Common stock, authorized (in shares) Amendment Flag Common stock, par value (in dollars per share) us-gaap_Depreciation Depreciation us-gaap_AssetsCurrent Total current assets State and Local Jurisdiction [Member] Preferred stock, without par value Authorized, - 1,000 shares; issued and outstanding – none Income Tax Authority [Domain] Current Fiscal Year End Date Income Tax Authority [Axis] Preferred stock, shares issued (in shares) Adjustments to reconcile net income to net cash provided by operating activities: Statement of Financial Position [Abstract] Preferred stock, shares authorized (in shares) Document Fiscal Period Focus Document Fiscal Year Focus Preferred stock, par value (in dollars per share) Document Period End Date Document Type us-gaap_OpenTaxYear Open Tax Year Statement of Cash Flows [Abstract] us-gaap_UnrecognizedTaxBenefits Balance at beginning of year Balance at end of year us-gaap_GrossProfit Gross margin Gross margin Statement of Stockholders' Equity [Abstract] Document Information [Line Items] us-gaap_PropertyPlantAndEquipmentAdditions Additions to property, plant and equipment Document Information [Table] Cash paid for income taxes Entity Public Float Entity Filer Category us-gaap_PropertyPlantAndEquipmentUsefulLife Property, Plant and Equipment, Useful Life Entity Current Reporting Status Total Minimum Lease Payments(a) us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions Reductions for tax positions of prior years Entity Voluntary Filers Additions based on tax positions related to the current year Entity Well-known Seasoned Issuer Additions for tax positions of prior years Latest Tax Year [Member] Earliest Tax Year [Member] Building and Building Improvements [Member] Inventories, less reserves of $308, and $381, respectively Entity Central Index Key Entity Registrant Name Inventories, reserves Entity [Domain] Tax Period [Axis] Legal Entity [Axis] Tax Period [Domain] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Policy [Policy Text Block] Capital in excess of par value Shareholders’ equity: Entity Common Stock, Shares Outstanding (in shares) Inventory, Policy [Policy Text Block] Cash flows from operating activities: Statement [Line Items] Inventories, net: Trading Symbol AOCI Attributable to Parent [Member] Accounts receivable, less allowance for doubtful accounts of $17 and $146, respectively and promotional allowances of $2,271 and $3,061, respectively Accounts receivable, allowance for doubtful accounts us-gaap_Liabilities Total liabilities Contingencies and commitments (Notes 3, 5 and 6) Postretirement healthcare liability Other comprehensive (loss), before taxes Fair Value Hierarchy [Domain] us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1 Tax benefit on other comprehensive income/loss Fair Value, Inputs, Level 1 [Member] Fair Value, Hierarchy [Axis] Executive retirement plans Current assets: us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent Executive retirement plans us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease Net increase in cash and cash equivalents Concentration Risk, Credit Risk, Policy [Policy Text Block] us-gaap_ShippingHandlingAndTransportationCosts Shipping, Handling and Transportation Costs us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Other comprehensive (loss) from defined benefit plans us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash used in financing activities Prior service cost (benefit) Other, net Change in valuation allowance us-gaap_PaymentsForRepurchaseOfCommonStock Shares repurchased us-gaap_StockholdersEquity Total shareholders’ equity Balance Balance Cost of products sold us-gaap_CostOfGoodsSold Cost of products sold Retained Earnings [Member] Additional Paid-in Capital [Member] Common Stock [Member] Equity Components [Axis] Equity Component [Domain] Net change in defined benefit plans and other benefit plans us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities Domestic Production Activities Deduction us-gaap_IncomeTaxReconciliationNondeductibleExpenseLifeInsurance Non-taxable life insurance gain us-gaap_IncomeTaxReconciliationTaxCreditsResearch Research & development tax credit us-gaap_LineOfCredit Long-term Line of Credit Provision for federal income taxes at the applicable statutory rate Increase in provision resulting from state income taxes, net of federal income tax benefit Cash and Cash Equivalents, Policy [Policy Text Block] Income Tax Disclosure [Text Block] Accounting Policies [Abstract] us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Income before taxes Income before taxes Transportation Equipment [Member] us-gaap_RepaymentsOfLongTermCapitalLeaseObligations Payment of capital lease obligations Machinery and Equipment [Member] Revolving Credit Facility [Member] Credit Facility [Domain] Credit Facility [Axis] Maximum [Member] Minimum [Member] Range [Axis] Range [Domain] Customer [Axis] Customer [Domain] us-gaap_OperatingLeasesRentExpenseContingentRentals Operating Leases, Rent Expense, Contingent Rentals Customer deposits Accounts receivable, allowance for promotional allowances A provision (charged as a reduction of revenue) to relate the costs of certain customer discounts and rewards for the associated revenue. Accruals for trade and sales promotions are recorded primarily at the time a product is sold to the customer based on expected levels of performance. Settlement of these liabilitites typically occur in subsequent periods. Wal-Mart [Member] Represents the major customer, WalMart. Dollar General [Member] Represents the major customer, Dollar General. Current portion of non-current liabilities (Note 3): Current portion of non-current liabilities [abstract Non-current liabilities (Note 3): Non-current liabilities [abstract Scenario, Forecast [Member] Scenario, Unspecified [Domain] Shares used to compute basic earnings per common share (in shares) Scenario [Axis] Basic earnings per share (in dollars per share) Other Segments [Member] Segments [Axis] Segments [Domain] Statement [Table] Commitments and Contingencies Disclosure [Text Block] Non-current liabilities Income Statement [Abstract] us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities Cash used in financing activities: us-gaap_DeferredCompensationArrangementWithIndividualRecordedLiability Deferred Compensation Arrangement with Individual, Recorded Liability Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain] Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Transportation equipment returned originally financed by capital lease obligation Return of Equipment Financed by Capital Lease The return of equipment that was financed through capital lease obligations. Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Deferred Tax Assets and Liabilities [Table Text Block] us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent Defined benefit retirement plan Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain] us-gaap_CapitalLeasesFutureMinimumPaymentsDue Capital leases, Total Minimum Lease Payments(a) Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Axis] us-gaap_CapitalLeaseObligationsNoncurrent Capital Lease Obligations, Noncurrent Capital leases, 2018 Capital leases, 2017 Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain] us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments Capital leases, Less: Amount representing interest(b) us-gaap_CapitalLeasesFutureMinimumPaymentsExecutoryCosts Capital leases, Less: Amount representing executory costs Provision for (benefit on) income taxes us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments Capital leases, Present value of future minimum lease payments(c) us-gaap_LiabilitiesCurrent Total current liabilities us-gaap_OtherLiabilitiesCurrent Current portion of non-current liabilities Other postretirement benefit plans: Other postretirement benefit plans [abstract] Actuarial (loss) Pretax change in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan, that has not been recognized in net periodic benefit cost for other post retirement plans. Quarterly Financial Information [Text Block] Other comprehensive income (loss) from other postretirement benefit plans Amount before tax, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans, attributable to parent entity. Class of Stock [Axis] brid_ProvisionForPromotionalAllowances Provision for promotional allowances The expense recognized in the current period that allocates the cost of promotional allowances. us-gaap_CapitalLeasesIncomeStatementAmortizationExpense Capital Leases, Income Statement, Amortization Expense Incentive compensation Capital lease obligation Capital Lease Obligations, Current Deferred income taxes, net Amount of deferred income tax expense (benefit), excluding tax valuation allowances, pertaining to income (loss) from continuing operations. us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 Debt Instrument, Basis Spread on Variable Rate brid_IncreaseDecreasePropertyPlantAndEquipment Additions to PP&E The increase (decrease) during the reporting period in property, plant and equipment. Employer contributions Defined Benefit Plan, Contributions by Employer Property taxes Total plan assets Fair value of plan assets - beginning of year Fair value of plan assets - end of year Income taxes payable Payroll, vacation, payroll taxes and employee benefits Current: Accounts payable Accrued payroll, advertising and other expenses Schedule of Net Benefit Costs [Table Text Block] us-gaap_LeaseAndRentalExpense Operating Leases, Rent Expense Schedule of Net Funded Status [Table Text Block] Schedule of Expected Benefit Payments [Table Text Block] Schedule of Health Care Cost Trend Rates [Table Text Block] Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block] Postretirement healthcare benefits Defined benefit retirement plan Schedule of Changes in Projected Benefit Obligations [Table Text Block] Proceeds from sale of property, plant and equipment Schedule of Assumptions Used [Table Text Block] Supplemental disclosure of cash flow information: London Interbank Offered Rate (LIBOR) [Member] us-gaap_OtherAccruedLiabilitiesCurrent Other Variable Rate [Axis] Schedule of Allocation of Plan Assets [Table Text Block] us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1 Accumulated postretirement healthcare obligation Variable Rate [Domain] us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1 Interest cost plus service cost Accrued advertising and broker commissions us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation Accumulated postretirement healthcare obligation us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents Interest cost plus service cost brid_DebtCovenantMaximumAllowableCapitalExpenditures Debt Covenant, Maximum Allowable Capital Expenditures The maximum allowable amount of capital expenditures as part of a debt covenant. Postretirement Health Coverage [Member] Ultimate trend rate Year ultimate trend rate is achieved Medical trend rate next year Pension Plan [Member] Basis of Presentation and Significant Accounting Policies [Text Block] us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Additions to property, plant and equipment us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInNextFiscalYear Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year us-gaap_GainLossOnSaleOfPropertyPlantEquipment Loss (gain) on sale of property, plant and equipment Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Defined Benefit Plan and Other Postretirement Benefit Plan [Domain] Current liabilities: Accrued payroll, advertising and other expenses: 2021 2022-2026 us-gaap_Assets Total assets Total assets 2019 2020 2017 2017 2018 2018 Target Asset Allocation Actual Asset Allocation us-gaap_SharesIssued Balance (in shares) Balance (in shares) Prepaid expenses Expected return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Return on Assets us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity Line of Credit Facility, Maximum Borrowing Capacity us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase Discount rate Cash [Member] Amortization of unrecognized prior service costs Amortization of prior service cost us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses Amortization of actuarial gain Net income Net income us-gaap_AdvertisingExpense Advertising Expense Interest cost us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets Expected return on plan assets Service cost Property, plant and equipment, accumulated depreciation Accumulated depreciation and amortization us-gaap_DefinedBenefitPlanFutureAmortizationOfGainLoss Amortization of unrecognized loss Property, plant and equipment, net of accumulated depreciation and amortization of $62,330 and $60,454, respectively us-gaap_PropertyPlantAndEquipmentGross Capital leased trucks Construction in process Machinery and equipment Unrecognized amounts recorded in other comprehensive income Unrecognized prior service costs Debt Disclosure [Text Block] Buildings and improvements Land us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax Unrecognized net actuarial gain us-gaap_DefinedBenefitPlanBeforeAdoptionOfSFAS158RecognitionProvisionsNetPriorServiceCostsCreditsNotYetRecognized Unrecognized prior service costs Unrecognized net actuarial loss Funded status of the plans Selling, general and administrative expenses SG&A Property, plant and equipment, net: us-gaap_ProvisionForDoubtfulAccounts (Recovery) provision for losses on accounts receivable us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet Net amount recognized Actual return (depreciation) on plan assets Meat, ingredients and supplies Work in process Finished goods us-gaap_DefinedBenefitPlanBenefitsPaid Benefits paid Benefits paid Use of Estimates, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] us-gaap_NumberOfReportableSegments Number of Reportable Segments us-gaap_DefinedBenefitPlanBenefitObligation Benefit obligations - beginning of year Benefit obligations – end of year us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash provided by operating activities Schedule of Segment Reporting Information, by Segment [Table Text Block] Transportation equipment Represents transportation equipment. Cash used in investing activities: brid_PercentAddedToSeasonedBondRate Percent Added To Seasoned Bond Rate Represents the percent added to seasoned bond rate brid_DeferredIncentiveCompensationPlanPaymentPeriod Deferred Incentive Compensation Plan Payment Period Represents the deferred incentive compensation plan payment period Plan Type, 401K [Member] Represents the 401K plan.