v3.25.2
Note 8 - Debt (Details Textual)
$ in Thousands, € in Millions
Jul. 07, 2025
USD ($)
Jul. 05, 2023
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2025
EUR (€)
Dec. 31, 2024
USD ($)
Jul. 03, 2023
USD ($)
Nov. 16, 2021
USD ($)
Long-Term Debt, Current Maturities     $ 93,366   $ 65,386    
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   Secured Overnight Financing Rate (SOFR) [Member]          
Revolving Credit Facility [Member]              
Line of Credit Facility, Maximum Borrowing Capacity     25,000        
Long-Term Line of Credit     0        
Subsequent Event [Member] | Revolving Credit Facility [Member]              
Line of Credit Facility, Maximum Borrowing Capacity $ 250,000            
Minimum [Member] | Subsequent Event [Member] | Revolving Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) [Member]              
Debt Instrument, Basis Spread on Variable Rate 2.50%            
Minimum [Member] | Subsequent Event [Member] | Revolving Credit Facility [Member] | Base Rate [Member]              
Debt Instrument, Basis Spread on Variable Rate 2.50%            
Maximum [Member] | Subsequent Event [Member] | Revolving Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) [Member]              
Debt Instrument, Basis Spread on Variable Rate 3.50%            
Maximum [Member] | Subsequent Event [Member] | Revolving Credit Facility [Member] | Base Rate [Member]              
Debt Instrument, Basis Spread on Variable Rate 3.50%            
Nordic Bond [Member]              
Debt Instrument, Interest Rate, Stated Percentage             8.50%
Debt Instrument, Face Amount             $ 175,000
Debt Instrument, Covenant, Prepayment Premium Percentage             2.55%
Debt Instrument, Covenant, Prepayment Premium Percentage, Increase (Decrease)             (0.85%)
Debt Instrument, Covenant, Minimum Free Liquidity Amount             $ 20,000
Debt Instrument, Covenant, Minimum Free Liquidity, Percentage of Net Interest Bearing Debt             10.00%
Debt Instrument, Covenant, Percentage of Minimum Equity Ratio             30.00%
Nordic Bond [Member] | GOLP and TMII [Member]              
Debt Instrument, Collateral, Percentage of Equity Interests             66.00%
Nordic Bond [Member] | Subsequent Event [Member]              
Repayments of Debt $ 4,500            
Vessel Facility Agreements [Member] | Delivery of Vessels Per Arrangement [Member]              
Debt Instrument, Face Amount     $ 26,700 € 24.9      
Vessel Facility Agreements [Member] | Minimum [Member]              
Debt Instrument, Interest Rate, Stated Percentage     2.70% 2.70%      
Vessel Facility Agreements [Member] | Maximum [Member]              
Debt Instrument, Interest Rate, Stated Percentage     6.30% 6.30%      
The 2023 Notes [Member] | Subsequent Event [Member]              
Debt Instrument, Interest Rate, Stated Percentage 9.125%            
Debt Instrument, Face Amount $ 650,000            
The 2023 Notes [Member] | Subsequent Event [Member] | Debt Instrument, Redemption, Period One [Member]              
Debt Instrument, Redemption Price, Percentage 100.00%            
The 2023 Notes [Member] | Subsequent Event [Member] | Debt Instrument, Redemption, Period Two [Member]              
Debt Instrument, Redemption Price, Percentage 104.563%            
Secured Debt [Member]              
Long-Term Debt, Fair Value     $ 192,500   218,200    
Debt Instrument, Face Amount   $ 325,000          
Debt Instrument, Covenant, Free Liquidity Test, Amount   $ 20,000          
Debt Instrument, Covenant, Free Liquidity Test, Percentage   10.00%          
Debt Instrument, Covenant, Minimum Equity Ratio   30.00%          
Secured Debt [Member] | Tranche A Term Loan [Member]              
Long-Term Debt, Current Maturities   $ 50,000          
Long-Term Line of Credit, Noncurrent   $ 50,000          
Debt Instrument, Basis Spread on Variable Rate   5.00%          
Secured Debt [Member] | Tranche A Term Loan [Member] | Maximum [Member]              
Debt Instrument, Basis Spread on Variable Rate   8.00%          
Secured Debt [Member] | Tranche B Term Loan [Member]              
Debt Instrument, Term (Year)   3 years          
Debt Instrument, Final Payment   $ 50,000          
Debt Instrument, Basis Spread on Variable Rate   3.75%          
Secured Debt [Member] | Tranche B Term Loan [Member] | Minimum [Member]              
Debt Instrument, Periodic Payment   $ 12,500          
Secured Debt [Member] | Tranche B Term Loan [Member] | Maximum [Member]              
Debt Instrument, Periodic Payment   $ 25,000          
Unsecured Debt [Member]              
Long-Term Debt, Fair Value     $ 265,200   $ 266,100    
Debt Instrument, Interest Rate, Stated Percentage     10.375% 10.375% 10.375% 10.375%  
Debt Instrument, Face Amount           $ 250,000  
Debt Instrument, Covenant, Free Liquidity Test, Amount           $ 20,000  
Debt Instrument, Covenant, Free Liquidity Test, Percentage           10.00%  
Debt Instrument, Covenant, Minimum Equity Ratio           30.00%  
Debt Instrument, Covenant, Prepayment Premium Percentage           6.00%  
Unsecured Debt [Member] | Subsequent Event [Member]              
Repayments of Debt $ 15,000            
Nordic Bond [Member]              
Long-Term Debt, Fair Value     $ 179,600   $ 180,800    
Debt Instrument, Interest Rate, Stated Percentage     8.50% 8.50% 8.50%