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Lease Obligations (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Lessee, Lease, Description [Line Items]      
Lease termination period 10 years    
Lease, Cost [Abstract]      
Operating lease cost $ 2,693 $ 1,512  
Short-term lease cost 3,168 2,124  
Finance lease cost:      
Amortization of right-of-use assets 41 50  
Interest on lease liabilities 4 6  
Total finance lease cost 45 56  
Cash paid for amounts included in the measurement of lease liabilities:      
Operating cash flows from operating leases 2,991 1,518  
Operating cash flows from finance leases 4 6  
Financing cash flows from finance leases 41 50  
Right-of-use assets obtained in exchange for lease obligations (non-cash):      
Operating leases 15,897 896  
Finance leases 0 $ 0  
Assets and Liabilities, Lessee [Abstract]      
Operating lease right-of-use assets 37,344   $ 24,520
Current portion of long-term lease obligations 10,117   8,841
Long-term lease obligations 27,326   15,831
Total operating lease liabilities 37,443   24,672
Property and equipment, at cost 1,479   1,479
Accumulated depreciation $ (953)   $ (907)
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Property and equipment, net ($10,189 and $10,420 related to VIEs)   Property and equipment, net ($10,189 and $10,420 related to VIEs)
Property and equipment, net $ 526   $ 572
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] Current maturities of long-term debt ($0 and $4,857 related to VIEs)   Current maturities of long-term debt ($0 and $4,857 related to VIEs)
Current maturities of long-term debt $ 143   $ 148
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Long-term debt ($0 and $81 related to VIEs)   Long-term debt ($0 and $81 related to VIEs)
Long-term debt $ 188   $ 224
Total finance lease liabilities $ 331   $ 372
Weighted average remaining lease term: operating leases 5 years 7 months 6 days   5 years 4 months 24 days
Weighted average remaining lease term: financing leases 2 years 3 months 18 days   2 years 6 months
Weighted average discount rate: operating lease 4.90%   5.00%
Weighted average discount rate: financing lease 4.30%   4.30%
Operating Leases      
2022 (excluding the three months ended March 31, 2022) $ 8,786    
2023 9,507    
2024 7,453    
2025 5,713    
2026 3,926    
2027 3,579    
Thereafter 3,978    
Total lease payments 42,942    
Less imputed interest (5,499)    
Total operating lease liabilities 37,443   $ 24,672
Finance Leases      
2022 (excluding the three months ended March 31, 2022) 116    
2023 154    
2024 77    
2025 0    
2026 0    
2027 0    
Thereafter 0    
Total lease payments 347    
Less imputed interest (16)    
Total finance lease liabilities $ 331   $ 372
Minimum      
Lessee, Lease, Description [Line Items]      
Lease renewal term 1 month    
Maximum      
Lessee, Lease, Description [Line Items]      
Lease renewal term 14 years