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Lease Obligations (Tables)
 9 Months Ended
Sep. 30, 2021
Leases [Abstract]  
Schedule of Lease Expenses The components of lease expense are as follows:
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Operating lease cost$1,672 $2,187 $4,694 $6,421 
Short-term lease cost$3,813 $3,311 $8,848 $10,337 
Finance lease cost:
Amortization of right-of-use assets$46 $49 $151 $154 
Interest on lease liabilities5 7 16 22 
Total finance lease cost$51 $56 $167 $176 
    Supplemental cash flow information related to leases is as follows:
Nine Months Ended September 30,
20212020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases$4,627 $6,281 
Operating cash flows from finance leases$16 $22 
Financing cash flows from finance leases$151 $154 
Right-of-use assets obtained in exchange for lease obligations (non-cash):
Operating leases$6,221 $7,679 
Finance leases$— $— 
    Supplemental balance sheet information related to leases is as follows:
September 30,
2021		December 31,
2020
Operating Leases
Operating lease right-of-use assets$17,470 $16,515 
Current portion of long-term lease obligations$8,314 $7,588 
Long-term lease obligations9,306 8,958 
Total operating lease liabilities$17,620 $16,546 
Finance Leases
Property and equipment, at cost$1,479 $1,479 
Accumulated depreciation(857)(702)
Property and equipment, net$622 $777 
Current maturities of long-term debt$157 $188 
Long-term debt260 372 
Total finance lease liabilities$417 $560 
Weighted Average Remaining Lease Term
Operating leases3.43.2
Finance leases2.73.2
Weighted Average Discount Rate
Operating leases5.4 %5.7 %
Finance leases4.2 %4.2 %
Maturities of Lease Liabilities, Operating Leases Maturities of lease liabilities are as follows:
Operating
Leases		Finance
Leases
Year Ending December 31,
2021 (excluding the nine months ended September 30, 2021)$1,742 $49 
20227,377 161 
20234,773 155 
20242,558 77 
20251,293 — 
20261,005 — 
Thereafter629 — 
Total lease payments$19,377 $442 
Less imputed interest(1,757)(25)
Total$17,620 $417 
Maturities of Lease Liabilities, Finance Leases Maturities of lease liabilities are as follows:
Operating
Leases		Finance
Leases
Year Ending December 31,
2021 (excluding the nine months ended September 30, 2021)$1,742 $49 
20227,377 161 
20234,773 155 
20242,558 77 
20251,293 — 
20261,005 — 
Thereafter629 — 
Total lease payments$19,377 $442 
Less imputed interest(1,757)(25)
Total$17,620 $417