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Lease Obligations - Summary of lease-related assets and liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Assets    
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Property and equipment, net of accumulated depreciation of $395,213 and $387,223, respectively  
Operating lease right-of-use assets $ 42,363 $ 42,648
Finance lease right-of-use assets 2,850 3,215
Total right-of-use lease assets 45,213 45,863
Current    
Operating lease obligations 12,192 12,141
Finance lease obligations 938 1,046
Total current obligations 13,130 13,187
Non-current    
Operating lease obligations 30,140 30,496
Finance lease obligations, net of current maturities 1,744 1,930
Total non-current obligations 31,884 32,426
Total lease obligations $ 45,014 $ 45,613