Class of Stock [Axis] Class A Units [Member] Class B Units [Member] Legal Entity [Axis] National Beef Packing Company, LLC [Member] Property Subject to or Available for Operating Lease [Axis] Kansas City, MO Office Lease [Member] Dodge City, KS Office Lease [Member] Ownership [Axis] Statement [Table] Statement [Line Items] Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity a Well-known Seasoned Issuer Entity a Voluntary Filer Entity's Reporting Status Current Entity Filer Category Entity Common Stock, Shares Outstanding Document Fiscal Period Focus Document Fiscal Year Focus Entity Emerging Growth Entity Small Business Statement of Financial Position [Abstract] Assets Current assets: Cash and cash equivalents Due from affiliates Other current assets Total current assets Property, plant, and equipment, at cost Less accumulated depreciation Net property, plant, and equipment Right of use assets, net Investment in National Beef Packing Company, LLC Other assets Total assets Liabilities and Capital Shares and Equities Current liabilities: Accounts payable - trade Due to affiliates Accrued compensation and benefits Lease obligations Other accrued expenses and liabilities Distributions payable Total current liabilities Long-term liabilities: Lease obligations Other liabilities Total long-term liabilities Total liabilities Capital shares and equities: Members' capital, 735,385 Class A units and 755,385 Class B units authorized, issued and outstanding Total capital shares and equities Total liabilities and capital shares and equities Members' capital, units authorized Members' capital, units issued Members' capital, units outstanding Net sales Costs and expenses: Cost of sales Selling, general, and administrative expenses Depreciation and amortization Total costs and expenses Operating loss Other income (expense): Interest income Interest expense Equity in net income of National Beef Packing Company, LLC Other, net Total other income Comprehensive income Earnings per unit: Basic and diluted Outstanding weighted-average Class A and Class B units: Basic and diluted Statement of Cash Flows [Abstract] Cash flows from operating activities: Comprehensive income Adjustments to reconcile comprehensive income to net cash used in operating activities: Equity in net income of National Beef Packing Company, LLC Changes in assets and liabilities: Due from affiliates Other assets Accounts payable Due to affiliates Accrued compensation and benefits Other accrued expenses and liabilities Net cash used in operating activities Cash flows from investing activities: Capital expenditures Net cash used in investing activities Cash flows from financing activities: Member distributions Net cash used in financing activities Net decrease in cash Cash and cash equivalents at beginning of the period Cash and cash equivalents at end of the period Supplemental noncash disclosures of operating activities: Right of use assets Supplemental noncash disclosures of financing activities: Member distributions Quarterly Financial Information Disclosure [Abstract] Interim Financial Statements Accounting Policies [Abstract] Accounting Policies Members' Equity [Abstract] Members' Capital Earnings Per Unit [Abstract] Earnings Per Unit Investments in and Advances to Affiliates, Schedule of Investments [Abstract] Investment in National Beef Packing Company, LLC Subsequent Events [Abstract] Subsequent Events Accounting for Investment in NBP Accounting for Leases Schedule of Reconciliation of Members' Capital Limited Liability Company (LLC) Members' Equity [Abstract] Schedule of Income (Loss) Per Unit Calculation Schedule of Operations for NBP Remaining membership interests in National Beef Packing Company, LLC (NBP) Remaining term of lease Lease periodic term Lease periodic payment Present value of operating lease payments Beginning balance Allocation of comprehensive income Member distributions Ending balance Schedule of Stock by Class [Table] Class of Stock [Line Items] Basic and diluted earnings per unit Comprehensive income attributable to USPB unitholders (numerator) Weighted average outstanding units (denominator) Per unit amount Ownership percentage Schedule of Investments [Table] Schedule of Investments [Line Items] Investment in National Beef Packing Net sales Cost of sales Selling, general, and administrative expenses Depreciation and amortization Total costs and expenses Operating income Other income (expense): Interest income Interest expense Income before taxes Income tax expense Net income NBP's net income attributable to USPB Class A Units [Member] Class B Units [Member] Distributions payable Document and entity information [Abstract] Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the noncurrent portion of the liabilities due after one year (or the normal operating cycle, if longer). This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. The amount of the total costs and expenses reported by an equity method investment of the entity. The amount of the depreciation and amortization reported by an equity method investment of the entity. The amount of income tax expense reported by an equity method investment of the entity. The amount of the interest expense reported by an equity method investment of the entity. The amount of the interest income reported by an equity method investment of the entity. The amount of net income (loss) before taxes reported by an equity method investment of the entity. The amount of the selling, general and administrative expenses reported by an equity method investment of the entity. The entire tabular disclosure for beginning balance of members capital changes during the year and ending balance National Beef Packing Company, LLC [Member] The entire tabular disclosure for beginning balance of members capital changes during the year and ending balance. [Table Text Block] Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends, if any. Supplemental noncash disclosures of operating activities [Abstract] Supplemental noncash disclosures of financing activities [Abstract] Lease periodic term Lease periodic payment Assets, Current Property, Plant and Equipment, Net Assets [Default Label] Liabilities, Current Operating Lease, Liability, Noncurrent Liabilities, Noncurrent Liabilities Members' Equity Liabilities and Equity Costs and Expenses Operating Income (Loss) Interest Expense Nonoperating Income (Expense) Weighted Average Number of Shares Outstanding, Basic and Diluted Increase (Decrease) in Due from Affiliates, Current Increase (Decrease) in Prepaid Expense and Other Assets Increase (Decrease) in Due to Affiliates, Current Increase (Decrease) in Employee Related Liabilities Increase (Decrease) in Other Accrued Liabilities Net Cash Provided by (Used in) Operating Activities Payments for Capital Improvements Net Cash Provided by (Used in) Investing Activities Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid Net Cash Provided by (Used in) Financing Activities Cash and Cash Equivalents, Period Increase (Decrease) Investments in and Advances to Affiliates, Schedule of Investments [Text Block] Distribution Made to Limited Partner, Cash Distributions Paid Equity Method Investment, Summarized Financial Information, Revenue Equity Method Investment, Summarized Financial Information, Cost of Sales EquityMethodInvestmentSummarizedFinancialInformationSellingGeneralAdministrative EquityMethodInvestmentSummarizedFinancialInformationDepreciationAndAmortization Total costs and expenses Equity Method Investment, Summarized Financial Information, Income (Loss) from Continuing Operations EquityMethodInvestmentSummarizedFinancialInformationInterestIncome EquityMethodInvestmentSummarizedFinancialInformationInterestExpense Income (loss) before taxes EquityMethodInvestmentSummarizedFinancialInformationIncomeTaxExpense Equity Method Investment, Summarized Financial Information, Net Income (Loss)