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Lease Obligations (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lease termination period |  |  | 10 years |  |
Lease, Cost [Abstract] |  |  |  |  |
Operating lease cost | $ 1,510 | $ 2,075 | $ 3,022 | $ 4,234 |
Short-term lease cost | 2,911 | 3,745 | 5,035 | 7,026 |
Finance lease cost: |  |  |  |  |
Amortization of right-of-use assets | 46 | 49 | 96 | 105 |
Interest on lease liabilities | 5 | 7 | 11 | 15 |
Total finance lease cost | 51 | $ 56 | 107 | 120 |
Cash paid for amounts included in the measurement of lease liabilities: |  |  |  |  |
Operating cash flows from operating leases |  |  | 2,980 | 4,336 |
Operating cash flows from finance leases |  |  | 11 | 15 |
Financing cash flows from finance leases |  |  | 96 | 105 |
Right-of-use assets obtained in exchange for lease obligations (noncash): |  |  |  |  |
Operating leases |  |  | 3,496 | 5,633 |
Finance leases |  |  | 0 | $ 0 |
Assets and Liabilities, Lessee [Abstract] |  |  |  |  |
Operating lease right-of-use assets | 16,609 |  | 16,609 |  | $ 16,515
Current portion of long-term lease obligations | 7,942 |  | 7,942 |  | 7,588
Long-term lease obligations | 8,783 |  | 8,783 |  | 8,958
Total operating lease liabilities | 16,725 |  | 16,725 |  | 16,546
Property and equipment, at cost | 1,479 |  | 1,479 |  | 1,479
Accumulated depreciation | $ (806) |  | $ (806) |  | $ (702)
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Property and equipment, net ($9,539 and $6,010 related to VIEs) |  | Property and equipment, net ($9,539 and $6,010 related to VIEs) |  | Property and equipment, net ($9,539 and $6,010 related to VIEs)
Property and equipment, net | $ 673 |  | $ 673 |  | $ 777
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | Current maturities of long-term debt ($6,793 and $6,793 related to VIEs) |  | Current maturities of long-term debt ($6,793 and $6,793 related to VIEs) |  | Current maturities of long-term debt ($6,793 and $6,793 related to VIEs)
Current maturities of long-term debt | $ 168 |  | $ 168 |  | $ 188
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Long-term debt ($79 and $53 related to VIEs) |  | Long-term debt ($79 and $53 related to VIEs) |  |
Long-term debt | $ 295 |  | $ 295 |  | 372
Total finance lease liabilities | $ 463 |  | $ 463 |  | $ 560
Weighted average remaining lease term: operating leases | 3 years 4 months 24 days |  | 3 years 4 months 24 days |  | 3 years 2 months 12 days
Weighted average remaining lease term: financing leases | 2 years 10 months 24 days |  | 2 years 10 months 24 days |  | 3 years 2 months 12 days
Weighted average discount rate: operating lease | 5.50% |  | 5.50% |  | 5.70%
Weighted average discount rate: financing lease | 4.20% |  | 4.20% |  | 4.20%
Operating Leases |  |  |  |  |
2021 (excluding the six months ended June 30, 2021) | $ 3,715 |  | $ 3,715 |  |
2022 | 6,510 |  | 6,510 |  |
2023 | 3,866 |  | 3,866 |  |
2024 | 1,820 |  | 1,820 |  |
2025 | 1,002 |  | 1,002 |  |
2026 | 928 |  | 928 |  |
Thereafter | 628 |  | 628 |  |
Total lease payments | 18,469 |  | 18,469 |  |
Less imputed interest | (1,744) |  | (1,744) |  |
Total operating lease liabilities | 16,725 |  | 16,725 |  | $ 16,546
Finance Leases |  |  |  |  |
2021 (excluding the six months ended June 30, 2021) | 101 |  | 101 |  |
2022 | 161 |  | 161 |  |
2023 | 154 |  | 154 |  |
2024 | 77 |  | 77 |  |
2025 | 0 |  | 0 |  |
2026 | 0 |  | 0 |  |
Thereafter | 0 |  | 0 |  |
Total lease payments | 493 |  | 493 |  |
Less imputed interest | (30) |  | (30) |  |
Total finance lease liabilities | $ 463 |  | $ 463 |  | $ 560
Minimum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lease renewal term |  |  | 1 month |  |
Maximum |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lease renewal term |  |  | 7 years |  |

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