Note 4 - Convertible Securities and Credit Facilities (Details Textual) | | | | | | 3 Months Ended | | |
Feb. 26, 2024 USD ($) | Mar. 14, 2023 USD ($) | Feb. 26, 2023 | Feb. 26, 2021 USD ($) $ / shares shares | Feb. 16, 2021 $ / shares shares | Mar. 31, 2023 USD ($) $ / shares | Dec. 31, 2022 USD ($) $ / shares | Feb. 25, 2021 $ / shares |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares | | | | $ 0.01 | | $ 0.01 | $ 0.01 | |
Percentage Of Stock Of Material Domestic Subsidiaries Securing Credit Agreement | | | | | | 100% | | |
Percentage Of Stock Of Material First Tier Foreign Subsidiaries Securing Credit Agreement | | | | | | 65% | | |
Preferred Stock, No Par Value (in dollars per share) | $ / shares | | | | | | | $ 0 | |
Series B Preferred Stock [Member] | | | | | | | | |
Embedded Derivative, Fair Value of Embedded Derivative Liability | | | | $ 1,000,000 | | $ 1,000,000 | $ 1,000,000 | |
Preferred Stock, Dividend Rate, Percentage | | | | 4% | | | | |
Preferred Stock, No Par Value (in dollars per share) | $ / shares | | | | | $ 0 | | | |
Preferred Stock Issued, Fair Value | | | | $ 95,000,000 | | | | |
Temporary Equity, Liquidation Preference Per Share (in dollars per share) | $ / shares | | | | | | | | $ 100 |
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares | | | | $ 14.50 | | | | |
Preferred Stock, Convertible, Threshold Trading Days | | | | 45 | | | | |
Preferred Stock, Convertible, Threshold Consecutive Trading Days | | | | 60 | | | | |
Series B Preferred Stock [Member] | Repurchase And Exchange Agreement [Member] | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | shares | | | | | 1,000,000 | | | |
Preferred Stock, Dividend Rate, Percentage | | | | | 4% | | | |
Series B Preferred Stock [Member] | Purchase Agreement [Member] | | | | | | | | |
Convertible Preferred Stock, Shares Issued upon Conversion (in shares) | shares | | | | 9.5238 | | | | |
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares | | | | $ 10.50 | | | | |
Series C Preferred Stock [Member] | | | | | | | | |
Embedded Derivative, Fair Value of Embedded Derivative Liability | | | | $ 2,000,000 | | | | |
Preferred Stock, Convertible, Threshold Trading Days | | | 45 | | | | | |
Preferred Stock, Convertible, Threshold Consecutive Trading Days | | | 60 | | | | | |
Series C Preferred Stock [Member] | Other Noncurrent Liabilities [Member] | | | | | | | | |
Embedded Derivative, Fair Value of Embedded Derivative Liability | | | | | | $ 1,000,000 | 1,000,000 | |
Series C Preferred Stock [Member] | After February Twenty Six Two Thousand Twenty Three [Member] | | | | | | | | |
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger | | | 200% | | | | | |
Series C Preferred Stock [Member] | After February Twenty Six Two Thousand Twenty Four [Member] | | | | | | | | |
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger | 150% | | | | | | | |
Series C Preferred Stock [Member] | Purchase Agreement [Member] | | | | | | | | |
Stock Issued During Period, Shares, New Issues (in shares) | shares | | | | 1,000,000 | | | | |
Preferred Stock, Dividend Rate, Percentage | | | | 5% | | | | |
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares | | | | $ 10 | | | | |
Shares Issued, Price Per Share (in dollars per share) | $ / shares | | | | $ 100 | | | | |
Gross Proceeds From Issuance Of Preferred Stock And Preference Stock | | | | $ 100 | | | | |
Gross Proceeds Owed on Issuance of PreferredStock | | | | $ 100,000,000 | | | | |
Series C Preferred Stock [Member] | Dividend And Other Rights [Member] | | | | | | | | |
Preferred Stock, Dividend Rate, Percentage | | | | 5% | | | | |
Amended A B L Credit Agreement [Member] | | | | | | | | |
Excess Availability Percentage Of Lender Commitments Below which Triggering Cash Dominion Control | | | | | | 12.50% | | |
Lender Commitments Threshold Trigger Excess Availability Amount | | | | | | $ 11,250,000 | | |
Excess Availability Below Which Fixed Charge Coverage Ratios Triggered | | | | | | 12.50% | | |
Amended A B L Credit Agreement [Member] | | | | | | | | |
Line of Credit Facility, Daily Minimum Liquidity | | $ 50,000,000 | | | | $ 50 | | |
Line of Credit Facility, Quarterly Minimum Liquidity | | 80,000,000 | | | | | | |
Line of Credit Facility, Maximum Borrowing Capacity | | $ 90,000,000 | | | | | | |
Minimum Liquidity Value Required To Maintain At Each Quarter | | | | | | 80,000,000 | | |
Minimum Liquidity Current Balance | | | | | | $ 143,000,000 | $ 150,000,000 | |
Excess Availability Percentage Of Lender Commitments Below which Triggering Cash Dominion Control | | | | | | 12.50% | 12.50% | |
Lender Commitments Threshold Trigger Excess Availability Amount | | | | | | $ 11,250,000 | $ 11,250,000 | |
Line of Credit Facility, Remaining Borrowing Capacity | | | | | | $ 21,000,000 | 21,000,000 | |
Excess Availability Below Which Fixed Charge Coverage Ratios Triggered | | | | | | 12.50% | | |
Letters of Credit Outstanding, Amount | | | | | | $ 58,000,000 | | |
Amended A B L Credit Agreement [Member] | Forecast [Member] | | | | | | | | |
Line of Credit Facility, Maximum Borrowing Capacity | $ 81,000,000 | | | | | | | |
Letter of Credit [Member] | Amended A B L Credit Agreement [Member] | | | | | | | | |
Line of Credit Facility, Commitment Fee Percentage | | 0.25% | | | | | | |
Letter Of Credit Facility Agreement [Member] | | | | | | | | |
Debt Instrument, Basis Spread on Variable Rate | | 2.75% | | | | | | |
Line of Credit Facility, Commitment Fee Percentage | | 0.25% | | | | | | |
Letter of Credit, Commitment Amount | | | | $ 50,000,000 | | | | |
Line of Credit Facility, Aggregate Cash Collateral Percentage | | | | 103% | | | | |
Letters of Credit Outstanding, Amount | | | | | | 43,000,000 | 43,000,000 | |
Letter Of Credit Cash Collateral | | | | | | 44,000,000 | 44,000,000 | |
Line of Credit Facility, Percentage of Letter of Credit Fee | | 3.75% | | | | | | |
Two Thousand Twenty One Notes Embedded Derivative [Member] | | | | | | | | |
Embedded Derivative, Fair Value of Embedded Derivative Liability | | | | $ 12,000,000 | | $ 3,000,000 | $ 2,000,000 | |
Minimum [Member] | Amended A B L Credit Agreement [Member] | | | | | | | | |
Fixed Charged Coverage Ratio Required | | | | | | 1 | 1 | |
Minimum [Member] | Revolving Credit Facility [Member] | Amended A B L Credit Agreement [Member] | | | | | | | | |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | | 0.375% | | | | | | |
Minimum [Member] | Revolving Credit Facility [Member] | Amended A B L Credit Agreement [Member] | Secured Overnight Financing Rate (SOFR) [Member] | | | | | | | | |
Debt Instrument, Basis Spread on Variable Rate | | 3.50% | | | | | | |
Maximum [Member] | Revolving Credit Facility [Member] | Amended A B L Credit Agreement [Member] | | | | | | | | |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | | 0.50% | | | | | | |
Maximum [Member] | Revolving Credit Facility [Member] | Amended A B L Credit Agreement [Member] | Secured Overnight Financing Rate (SOFR) [Member] | | | | | | | | |
Debt Instrument, Basis Spread on Variable Rate | | 4% | | | | | | |
Two Thousand Twenty One Convertible Debt [Member] | | | | | | | | |
Debt Instrument, Face Amount | | | | $ 25,000,000 | | | | |
Debt Instrument, Interest Rate, Stated Percentage | | | | 5% | | | | |
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares | | | | 100 | | | | |
Debt Conversion, Converted Instrument, Amount | | | | $ 1,000 | | | | |
Initial Conversion Price Per Share of Common Stock (in dollars per share) | $ / shares | | | | $ 10 | | | | |
Debt Instrument, Convertible, Stock Price Trigger (in dollars per share) | $ / shares | | | | $ 14.50 | | | | |
Debt Instrument, Convertible, Threshold Consecutive Trading Days | | | | 60 | | | | |
Holder Fundamental Transaction Election Period (Day) | | | | 30 days | | | | |
Convertible Notes Payable, Noncurrent | | | | | | $ 18,000,000 | $ 18,000,000 | |
Debt Instrument, Unamortized Discount | | | | | | 8,000,000 | 9,000,000 | |
Convertible Debt, Fair Value Disclosures | | | | | | $ 17,000,000 | $ 16,000,000 | |
Two Thousand Twenty One Convertible Debt [Member] | Minimum [Member] | | | | | | | | |
Debt Instrument, Convertible, Threshold Trading Days | | | | 45 | | | | |