Concentration Risk Benchmark [Axis] Sales Revenue, Net [Member] Customer [Axis] Wal-Mart [Member] Accounts Receivable [Member] Equity Components [Axis] Common Stock [Member] Capital in Excess of Par Value [Member] Retained Earnings [Member] Accumulated Other Comprehensive Loss [Member] Scenario [Axis] Reduced Federal Tax Rate [Member] Award Date [Axis] November 2, 2018 [Member] Thereafter [Member] Fiscal Year 2018 [Member] Income Tax Authority [Axis] Deferred Tax [Member] Property, Plant and Equipment, Type [Axis] Smokehouses and Chillers [Member] Segments [Axis] Frozen Food Products [Member] Snack Food Products [Member] Other [Member] Document And Entity Information Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Filer Category Entity Common Stock, Shares Outstanding Trading Symbol Document Fiscal Period Focus Document Fiscal Year Focus Statement of Financial Position [Abstract] ASSETS Current assets: Cash and cash equivalents Accounts receivable, less allowance for doubtful accounts of $176 and $30, respectively, and promotional allowances of $2,397 and $2,537, respectively Inventories, less reserves of $238 and $358, respectively (Note 2) Prepaid expenses and other current assets Total current assets Property, plant and equipment, net of accumulated depreciation and amortization of $65,246 and $63,722, respectively Other non-current assets Deferred income taxes (Note 5) Total assets LIABILITIES AND SHAREHOLDERS' EQUITY Current liabilities: Accounts payable Accrued payroll, advertising and other expenses Income taxes payable Current portion of non-current liabilities Total current liabilities Non-current liabilities Total liabilities Contingencies and commitments (Note 3) Shareholders' equity: Preferred stock, without par value; authorized - 1,000 shares; issued and outstanding - none Common stock, $1.00 par value; authorized - 20,000 shares; issued and outstanding -9,076 and 9,076 shares, respectively Capital in excess of par value Retained earnings Accumulated other comprehensive loss Total shareholders' equity Total liabilities and shareholders' equity Accounts receivable, allowance for doubtful accounts Accounts receivable, allowance for promotional allowances Inventories, reserves Property, plant and equipment, accumulated depreciation Preferred stock, par value Preferred stock, shares authorized Preferred stock, shares issued Preferred stock, shares outstanding Common stock, par value Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Income Statement [Abstract] Net sales Cost of products sold Gross margin Selling, general and administrative expenses Gain on sale of property ,plant & equipment Income before taxes Provision for income taxes Net income Basic earnings per share Shares used to compute basic earnings per share Statement [Table] Statement [Line Items] Balance Balance, shares Net income Reclassification upon early adoption of ASU 2018-02 (Note 5) Balance Balance, shares Statement of Cash Flows [Abstract] Cash flows from operating activities: Adjustments to reconcile net income to net cash provided by operating activities: Depreciation Provision for losses on accounts receivable Provision for (reduction in) promotional allowances Gain on sale of property, plant and equipment Deferred income taxes, net Changes in operating assets and liabilities: Accounts receivable Inventories Prepaid expenses and other current assets Other non-current assets Accounts payable Accrued payroll, advertising and other expenses Income taxes payable Non-current liabilities Net cash provided by operating activities Cash provided by (used in) investing activities: Proceeds from sale of property, plant and equipment Additions to property, plant and equipment Net cash provided by (used in) investing activities Cash used in financing activities: Payment of capital lease obligations Net cash used in financing activities Net increase in cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental disclosure of cash flow information: Cash paid for income taxes Accounting Policies [Abstract] Summary of Significant Accounting Policies Inventory Disclosure [Abstract] Inventories Commitments and Contingencies Disclosure [Abstract] Contingencies and Commitments Segment Reporting [Abstract] Segment Information Income Tax Disclosure [Abstract] Income Taxes Subsequent Events Basic Earnings Per Share Schedule of Customer Concentration Schedule of Inventories Schedule of Segment Reporting Information, by Segment Schedule of Components of Tax Provision Report Date [Axis] Concentration risk, percentage Sale of property Non-recurring pre-tax gain sale of property Concentration Risk Type [Axis] Range [Axis] Meat, ingredients and supplies Work in progress Finished goods Inventories, net Capital lease obligation Property, plant and equipment additions Payments to acquire property plant and equipment Number of operating segments Sales Gross margin SG&A Gain on sale of property , plant and equipment Income (loss) before taxes Total assets Additions to PP&E Federal tax rate, percentage Effective income tax rate Deferred income tax expense Income tax description Effective income tax amount Related to tax on gain on sale percent Reclassified other comprehensive income to retained earnings Tax provision at estimated annual effective rate Tax on sale of property- Chicago land parcel Deferred income tax adjustment - OCI Deferred income tax adjustment - Non-OCI Provision for income tax 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. Capital in Excess of Par Value [Member] Deferred income tax adjustment - Non-OCI. Deferred income tax adjustment - OCI. Deferred Tax [Member] Fiscal Year 2018 [Member] Frozen Food Products [Member] Income tax description. November 02, 2018 [Member] The expense recognized in the current period that allocates the cost of promotional allowances. Reclassification upon early adoption of accounting standards. Reduced Federal Tax Rate [Member] Smokehouses and Chillers [Member] Snack Food Products [Member] Tax provision at estimated annual effective rate. Wal-Mart [Member] Related to tax on gain on sale percent. Tax on sale of property- Chicago land parcel. Reclassified other comprehensive income to retained earnings. Thereafter [Member] Non-recurring pre-tax gain sale of property. Assets, Current Liabilities, Current Liabilities Stockholders' Equity Attributable to Parent Liabilities and Equity Shares, Issued Gain (Loss) on Disposition of Property Plant Equipment Increase (Decrease) in Accounts Receivable Increase (Decrease) in Inventories Increase (Decrease) in Prepaid Expenses, Other Increase (Decrease) in Other Noncurrent Assets Increase (Decrease) in Accounts Payable Increase (Decrease) in Accrued Liabilities Increase (Decrease) in Income Taxes Payable Increase (Decrease) in Other Noncurrent Liabilities Net Cash Provided by (Used in) Operating Activities Net Cash Provided by (Used in) Investing Activities Repayments of Long-term Capital Lease Obligations Net Cash Provided by (Used in) Financing Activities Cash and Cash Equivalents, Period Increase (Decrease)