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Long-Term Debt and Financing Arrangements - Schedule of Outstanding Debt (Detail) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Debt Instrument [Line Items]    
Interim funding for equipment received and expected to be converted to an equipment note in subsequent year; interest paid at a variable rate $ 3,265 $ 6,137
Secured long-term debt 350,682 342,465
Less current portion (105,108) (101,741)
Total long-term debt 245,574 240,724
Secured Equipment Notes due in 2028 [member]    
Debt Instrument [Line Items]    
Secured long-term debt 105,744 0
Secured Equipment Notes due in 2027 [member]    
Debt Instrument [Line Items]    
Secured long-term debt 147,192 177,295
Secured Equipment Notes due in 2026 [Member]    
Debt Instrument [Line Items]    
Secured long-term debt 55,797 78,359
Secured Equipment Notes due in 2025 [Member]    
Debt Instrument [Line Items]    
Secured long-term debt 30,930 43,955
Secured Equipment Notes due in 2024 [Member]    
Debt Instrument [Line Items]    
Secured long-term debt 7,754 20,751
Secured Equipment Notes due in 2023 [Member]    
Debt Instrument [Line Items]    
Secured long-term debt $ 0 $ 15,968