Class of Stock [Axis] Class A Units [Member] Class B Units [Member] Lender Name [Axis] CoBank [Member] Credit Facility [Axis] Revolving Credit Facility [Member] Plan Name [Axis] Management Phantom Unit Plan [Member] Cash Incentive And Bonus Plans [Member] Equity Method Investment Nonconsolidated Investee [Axis] National Beef Packing Company, LLC [Member] Legal Entity [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 Public Float Entity Emerging Growth Entity Small Business Entity Shell Company Entity Interactive Data Current Entity File Number Entity Incorporation, State Country Code Statement of Financial Position [Abstract] Assets Current assets: Cash and cash equivalents Accounts receivable 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 Members' Capital 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 Commitments and contingencies Members' capital Members' contributed capital, 735,385 Class A units and 755,385 Class B units authorized, issued and outstanding Total members' capital Total liabilities and members' capital 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 : Interest income Interest expense Equity in income of National Beef Packing Company, LLC Other, net Total other income Net income Income 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: Adjustments to reconcile net income to net cash used in operating activities: Equity in net income of National Beef Packing Company, LLC Distributions from National Beef Packing Company, LLC Changes in assets and liabilities: Accounts receivable 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, including interest capitalized Net cash used in investing activities Cash flows from financing activities: Member distributions Net cash used in financing activities Net increase (decrease) in cash Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Supplemental cash disclosures: Cash paid during the period for interest Supplemental noncash disclosures of operating activities: Right of use assets Supplemental Noncash Disclosures Of Investing Activities: Investment in National Beef Packing Company, LLC Quarterly Financial Information Disclosure [Abstract] Interim Financial Statements Accounting Policies [Abstract] Accounting Policies Compensation Related Costs [Abstract] Noncompetition Agreements Retirement Benefits [Abstract] Employee Compensation Plans Earnings Per Share [Abstract] Schedule of Income (Loss) Per Unit Calculation Equity Method Investments and Joint Ventures [Abstract] Investment in National Beef Packing Company, LLC Income Tax Disclosure [Abstract] Income Taxes Debt Disclosure [Abstract] Long-term Debt and Loan Agreements Members' Equity [Abstract] Members' Capital Commitments and Contingencies Disclosure [Abstract] Legal Proceedings Subsequent Events [Abstract] Subsequent Events Accounting for Investment in NBP Cash and Cash Equivalents Schedule of non-compete amounts Reconciliation of earnings per unit Investment roll forward Schedule of Operations for NBP Schedule of Reconciliation of Members' Capital Current non-compete Long-term non-compete Total non-compete Noncompetition payment payable year one Noncompetition payment payable year two Accrued Noncompetition Payments Accrued liabilities Basic and diluted earnings per unit: Income attributable to USPB available to unitholders (numerator) Weighted average outstanding units (denominator) Per unit amount Beginning Investment Balance Equity in net income Distributions from National Beef Packing Company, LLC Ending Investment Balance Schedule of Investments [Table] Schedule of Investments [Line Items] Equity Method Investment, Nonconsolidated Investee [Axis] Investment in National Beef Packing Total costs and expenses Operating income Other income (expense): Income before taxes Income tax expense Net income NBP's net income attributable to USPB Ownership percentage State income tax payable Credit line maximum borrowing capacity Credit line, remaining borrowing capacity Credit line expiration date Beginning balance Allocation of net income Member distributions Ending balance Class A Units [Member] Class B Units [Member] Distributions payable 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. Current portion of gross carrying amount before accumulated amortization as of the balance sheet date of payments made to third parties in exchange for their agreement not to engage in specified competitive practices in specified geographic territories for a specified period of time. Noncurrent portion of gross carrying amount before accumulated amortization as of the balance sheet date of payments made to third parties in exchange for their agreement not to engage in specified competitive practices in specified geographic territories for a specified period of time. National Beef Packing Company, LLC [Member] Supplemental noncash disclosures of investing activities: [Abstract] Supplemental noncash disclosures of operating activities: [Abstract] 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. The entire tabular disclosure for beginning balance of members capital changes during the year and ending balance The entire tabular disclosure for beginning balance of members capital changes during the year and ending balance. [Table Text Block] The amount of net income (loss) before taxes reported by an equity method investment of the entity. The amount of income tax expense reported by an equity method investment of the entity. Investment in National Beef Packing [Abstract] Disclosure for noncompetition agreements [Text Block] Disclosure for employee compensation plans [Text Block] Investment in National Beef Packing Company, LLC Assets, Current Property, Plant and Equipment, Net Assets [Default Label] Liabilities, Current Operating Lease, Liability, Noncurrent Liabilities, Noncurrent Liabilities Members' Equity Liabilities and Equity Operating Income (Loss) Interest Expense Other Operating Income (Expense), Net Increase (Decrease) in Accounts Receivable 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 to Acquire Property, Plant, and Equipment 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) InvestmentInNationalBeefPackingCompanyLlc Equity Method Investments and Joint Ventures Disclosure [Text Block] Finite-Lived Noncompete Agreements, Gross EquityMethodInvestmentSummarizedFinancialInformationIncomeTaxExpense Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Distribution Made to Limited Partner, Cash Distributions Paid