Equity Components [Axis] Common Stock [Member] Capital in Excess of Par Value [Member] Retained Earnings [Member] Accumulated Other Comprehensive Loss [Member] Range [Axis] Maximum [Member] Type of Arrangement and Non-arrangement Transactions [Axis] Loan Agreement [Member] Concentration Risk Benchmark [Axis] Accounts Receivable [Member] Sales Revenue, Net [Member] Award Date [Axis] April 15, 2019 [Member] Legal Entity [Axis] Wells Fargo Bank N.A [Member] Master Collateral Loan and Security Agreement [Member] Customer [Axis] Wal-Mart [Member] Dollar General [Member] Segments [Axis] Frozen Food Products [Member] Snack Food Products [Member] Other [Member] Product and Service [Axis] Retail [Member] Foodservice [Member] Deferred Tax [Member] Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Filer Category Entity Small Business Flag Entity Emerging Growth Company Entity Ex Transition Period 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 $51 and $33, respectively, and promotional allowances of $2,848 and $2,122, respectively Inventories, net Prepaid expenses and other current assets Total current assets Property, plant and equipment, net of accumulated depreciation and amortization of $68,282 and $66,337, 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 notes payable - equipment Line of credit Current portion of non-current liabilities Total current liabilities Long-term notes payable - equipment Non-current liabilities Total liabilities Contingencies and commitments (Note 3) Shareholders' equity: Preferred stock, without par value; authorized - 1,000,000 shares; issued and outstanding - none Common stock, $1.00 par value; authorized - 20,000,000 shares; issued and outstanding - 9,076,832 and 9,076,832 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 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 and 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 Balance Balance, shares Statement of Cash Flows [Abstract] Cash flows from operating activities: Adjustments to reconcile net income to net cash (used in) provided by operating activities: Depreciation Provision for losses on accounts receivable (Reduction in) provision for 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 (used in) provided by operating activities Cash (used in) provided by investing activities: Proceeds from sale of property, plant and equipment Additions to property, plant and equipment Net cash (used in) provided by investing activities Cash provided by (used in) financing activities: Payment of capital lease obligations Proceeds from bank borrowings Repayments of bank borrowings Net cash provided by (used in) financing activities Net (decrease) 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 Debt Disclosure [Abstract] Equipment Note Payable and Financial Arrangements Revenue Recognition Subsequent Events Basic Earnings Per Share Schedule of Customer Concentration Schedule of Inventories Schedule of Segment Reporting Information, by Segment Schedule of Disaggregates Our Sales to Customer Schedule of Long Term Notes Payable Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Statistical Measurement [Axis] Concentration risk, percentage Line of credit facility, maximum borrowing capacity Proceeds from loan borrowed Equipment financing amount Meat, ingredients and supplies Work in progress Finished goods Inventories, net Number of operating segments Sales Cost of products sold Gross margin SG&A Income before taxes Total assets Additions to PP&E Direct store delivery Direct customer warehouse Total Snack Food Products Distributors Total Frozen Food Products Totals Income tax rate reconciliation description Federal income tax rate Blended corporate tax rate before and after the Tax Act Adjustment to income tax provision Efffective income tax rate Deferred tax assets, reclassified from other comprehensive income to retained earnings Deferred income taxes, description Impact on income tax expenses Impact on income tax, percent Purchase specific equipment amount Facility fixed rate percentage Debt term Debt monthly principal and interest payments Debt monthly term Secured equipment notes payable to Wells Fargo Bank, N.A. collateralized by equipment for the new Chicago processing facility. Less current portion of notes payable Total long-term notes payable 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] Debt monthly term. Deferred income taxes, description. Deferred Tax [Member] Equipment financing amount. Loan Agreement [Member] Purchase specific equipment amount. (Reduction in) provision for promotional allowances. Secured equipment notes payable. Thereafter [Member] Wells Fargo Bank N.A [Member] Master Collateral Loan and Security Agreement [Member] Wal-Mart [Member] Dollar General [Member] Frozen Food Products [Member] Snack Food Products [Member] Foodservice [Member] Direct store delivery. Direct customer warehouse. Total Snack Food Products. Distributors. Total Frozen Food Products. Reclassification upon early adoption. April 15, 2019 [Member] Assets, Current Liabilities, Current Liabilities Stockholders' Equity Attributable to Parent Liabilities and Equity Gain (Loss) on Disposition of Other Assets 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 Payments to Acquire Property, Plant, and Equipment Net Cash Provided by (Used in) Investing Activities Repayments of Long-term Capital Lease Obligations Repayments of Bank Debt Net Cash Provided by (Used in) Financing Activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Cost of Revenue