Class of Stock [Axis] Class A Units [Member] Class B Units [Member] Investment, Name [Axis] National Beef Packing Company LLC [Member] Cash and Cash Equivalents [Axis] US Treasury Securities [Member] Certificates of Deposit [Member] Statistical Measurement [Axis] Minimum [Member] Maximum [Member] Segments [Axis] Equity Method Investment In National Beef Packing Company LLC And Subsidiaries [Member] Subsegments Consolidation Items [Axis] Reportable Subsegments [Member] Elimination Of Unconsolidated Affiliate [Member] Corporate And Other Of USPB [Member] Subsegments [Axis] Plan Name [Axis] Management Phantom Unit Plan [Member] Cash Incentive And Bonus Plans [Member] Nature of Expense [Axis] Other Nonoperating Income [Member] Lender Name [Axis] Co Bank [Member] Credit Facility [Axis] Revolving Credit Facility [Member] Statement [Table] Statement [Line Items] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Statement of Financial Position [Abstract] Assets Current assets: Cash and cash equivalents Certificates of Deposit Treasury Securities Accrued interest 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 other 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 Equity in net loss of National Beef Packing Company, LLC Other income, net Total other income Net loss Loss per unit: Loss per unit, basic Loss per unit, diluted Outstanding weighted-average Class A and Class B units: Outstanding weighted-average, basic Outstanding weighted-average, diluted Members equity, beginning balance Net income (loss) Member distributions Advanced distribution Members equity, ending balance Statement of Cash Flows [Abstract] Cash flows from operating activities: Net loss Adjustments to reconcile net loss to net cash used in operating activities: Depreciation and amortization Equity in net loss of 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: Investments in certificates of deposit Investments in treasury securities Redemptions of certificates of deposit Redemptions of treasury securities 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 period Cash and cash equivalents at end of period Pay vs Performance Disclosure [Table] Executive Category [Axis] Individual [Axis] Adjustment to Compensation [Axis] Measure [Axis] Pay vs Performance Disclosure, Table Company Selected Measure Name Named Executive Officers, Footnote Peer Group Issuers, Footnote Changed Peer Group, Footnote PEO Total Compensation Amount PEO Actually Paid Compensation Amount Adjustment To PEO Compensation, Footnote Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Compensation Actually Paid Amount Adjustment to Non-PEO NEO Compensation Footnote Equity Valuation Assumption Difference, Footnote Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Company Selected Measure Total Shareholder Return Vs Peer Group Compensation Actually Paid vs. Other Measure Tabular List, Table Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Net Income (Loss) Company Selected Measure Amount Other Performance Measure, Amount Adjustment to Compensation, Amount PEO Name Name Non-GAAP Measure Description Additional 402(v) Disclosure Pension Benefits Adjustments, Footnote Equity Awards Adjustments, Footnote Erroneously Awarded Compensation Recovery [Table] Restatement Determination Date [Axis] Restatement Determination Date Aggregate Erroneous Compensation Amount Erroneous Compensation Analysis Stock Price or TSR Estimation Method Outstanding Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Not Yet Determined Name Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery, Explanation of Impracticability Name Compensation Amount Restatement does not require Recovery Awards Close in Time to MNPI Disclosures [Table] Award Type [Axis] Award Timing MNPI Disclosure Award Timing Method Award Timing Predetermined Award Timing MNPI Considered Award Timing, How MNPI Considered MNPI Disclosure Timed for Compensation Value Awards Close in Time to MNPI Disclosures, Table Name Underlying Securities Exercise Price Fair Value as of Grant Date Underlying Security Market Price Change Insider Trading Arrangements [Line Items] Material Terms of Trading Arrangement Name Title Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted Adoption Date Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated Termination Date Expiration Date Arrangement Duration Aggregate Available Insider Trading Policies and Procedures [Line Items] Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Not Adopted Accounting Policies [Abstract] Interim Financial Statements Accounting Policies Noncompetition Agreement Noncompetition Agreement Retirement Benefits [Abstract] Employee Compensation Plans Other Income and Expenses [Abstract] Delivery Right Lease Income Earnings Per Share [Abstract] Loss Per Unit 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 Commitments and Contingencies Disclosure [Abstract] Legal Proceedings Subsequent Events [Abstract] Subsequent Events Accounting for Investment in NBP Disaggregation of Income Statement Expenses Cash and Cash Equivalents Treasury Securities Certificates of Deposit Accrued Expenses Segment Reporting Schedule of treasury securities carrying value and fair value Schedule of certificate of deposits Schedule of operating results and assets of reportable segment Schedule of accrued liabilities Schedule of income per unit calculation Schedule of changes to USPB’s investment in NBP Schedule of results of operations for NBP Cash and Cash Equivalent [Table] Cash and Cash Equivalents [Line Items] Carrying value of securities Fair value of securities Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Line Items] Maturity date range Interest rate range Carrying value DisclosureTable [Table] DisclosureLineitem [Line Items] Revenues Cost of sales Selling, general and administrative expenses Revenues Interest expense Other, net Income tax expense Net loss in National Beef Equity in net loss of National Beef Total assets Total liabilities Capital Expenditures for segment assets Equity investment ownership percentage Cash and cash equivalents Accrued accounting expenses Reportable segment Noncompetition payment payable Current phantom unit Long-term phantom unit Total phantom accrual Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Accrued compensation Interim Period, Costs Not Allocable [Table] Interim Period, Costs Not Allocable [Line Items] Delivery right lease income Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Income attributable to USPB available to unitholders (numerator) Weighted average outstanding units, Basic Weighted average outstanding units, Diluted Income per unit, Basic Per unit, Diluted Beginning investment balance Equity in net income loss for the period Distributions Ending investment balance Net sales Cost of sales Selling, general, and administrative expenses Depreciation and amortization Total costs and expenses Operating loss Other income (expense): Interest income Interest expense Net loss before taxes Income tax refund Net loss State income tax payable Line of Credit Facility [Table] Line of Credit Facility [Line Items] Revolving loan commitment amount Credit line expiration date Interest rate Interest rate percentage Increase in advancing amount Class A Units [Member] Class B Units [Member] National Beef Packing Company LLC [Member] Equity Method Investment In National Beef Packing Company LLC And Subsidiaries [Member] Elimination Of Unconsolidated Affiliate [Member] Corporate And Other Of USPB [Member] Management Phantom Unit Plan [Member] Cash Incentive And Bonus Plans [Member] Other Nonoperating Income [Member] Co Bank [Member] Assets, Current Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Assets [Default Label] Liabilities, Current Operating Lease, Liability, Noncurrent Liabilities, Noncurrent Liabilities Members' Equity Liabilities and Equity Costs and Expenses Operating Income (Loss) Other Operating Income (Expense), Net Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid Depreciation, Depletion and Amortization Increase (Decrease) in Accounts Receivable Increase (Decrease) in Due from Affiliates, Current Increase (Decrease) in Prepaid Expense and Other Assets Increase (Decrease) in Employee Related Liabilities Increase (Decrease) in Other Accrued Liabilities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Payments to Acquire Restricted Certificates of Deposit Payments to Acquire Other Investments Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation Forgone Recovery, Individual Name Outstanding Recovery, Individual Name Awards Close in Time to MNPI Disclosures, Individual Name Trading Arrangement, Individual Name NoncompetitionAgreementDisclosureTextBlock Equity Method Investments and Joint Ventures Disclosure [Text Block] TreasurySecuritiesPolicyTextBlock CertificatesOfDepositPolicyTextBlock DepreciationAndAmortizations Cash and Cash Equivalent Accounts Payable and Other Accrued Liabilities Proceeds from Equity Method Investment, Distribution EquityMethodInvestmentsNetSales EquityMethodInvestmentsCostsOfRevenue EquityMethodInvestmentsSellingGeneralAndAdministrativeExpenses EquityMethodInvestmentsDepreciationAndAmortization EquityMethodInvestmentsTotalCostsAndExpenses EquityMethodInvestmentsOperatingIncomeExpense EquityMethodInvestmentIncomeInterest EquityMethodInvestmentInterestExpense EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLossBeforeTaxes EquityMethodInvestmentSummarizedFinancialInformationIncomeTaxExpense EquityMethodInvestmentProfitLoss