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Fair Value Measurements (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash, cash equivalents and restricted cash $ 189,754 $ 86,222
Collateral on derivatives 909 15,081
Fair value of derivative assets - current 8,479 4,669
Fair value of derivative assets - noncurrent 8,184 3,112
Long-term debt, carrying value 341,869  
Fair value of derivative liabilities - current 163 4,253
Global Ultraco Debt Facility | Revolver Loan    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, carrying value 237,750 287,550
Convertible Debt Securities | Convertible Debt    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, carrying value 104,119 114,119
Fair Value, Inputs, Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash, cash equivalents and restricted cash 189,754 86,222
Collateral on derivatives 909 15,081
Fair value of derivative assets - current 0 0
Fair value of derivative assets - noncurrent 0 0
Fair value of derivative liabilities - current 0 0
Fair Value, Inputs, Level 1 | Recurring | Global Ultraco Debt Facility | Revolver Loan    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value 0 0
Fair Value, Inputs, Level 1 | Recurring | Convertible Debt Securities | Convertible Debt    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value 0 0
Fair Value, Inputs, Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Cash, cash equivalents and restricted cash 0 0
Collateral on derivatives 0 0
Fair value of derivative assets - current 8,479 4,669
Fair value of derivative assets - noncurrent 8,184 3,112
Fair value of derivative liabilities - current 163 4,253
Fair Value, Inputs, Level 2 | Recurring | Global Ultraco Debt Facility | Revolver Loan    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value 237,750 287,550
Fair Value, Inputs, Level 2 | Recurring | Convertible Debt Securities | Convertible Debt    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-term debt, fair value $ 172,661 $ 147,499