Leases (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Lease, Cost [Abstract]
Amortization of ROU assets	$ 1,140	$ 553
Interest on lease liabilities	110	74
Operating lease cost	623	679
Short-term lease cost	3,212	2,503
Variable lease cost	1	0
Total lease expense	5,086	3,809
Operating cash flows from operating leases	622	678
Operating cash flows from finance leases	109	105
Financing cash flows from finance leases	1,014	532
ROU assets obtained in exchange for new lease liabilities, Finance leases	2,091	0
ROU assets obtained in exchange for new lease liabilities, Operating leases	$ 264	$ 81
Weighted-average remaining lease term (years), Finance leases	4 years 1 month 6 days	2 years 9 months 10 days
Weighted-average remaining lease term (years), Operating leases	4 years 3 months 25 days	4 years 6 months 29 days
Weighted-average discount rate, Finance leases	2.80%	4.90%
Weighted-average discount rate, Operating leases	4.20%	5.00%
Assets and Liabilities, Lessee [Abstract]
Finance lease ROU assets	$ 16,202		$ 15,251
Operating lease ROU assets	7,774		8,051
Finance lease liabilities, Current	4,494		4,112
Operating lease liabilities, Current	2,172		2,050
Finance lease liabilities, Noncurrent	12,202		11,507
Operating lease liabilities, Noncurrent	5,603		6,000
Finance Lease Liabilities, Payments
Remainder of 2021	3,657
2022	3,942		4,496
2023	3,145		3,562
2024	2,350		2,764
2025	3,773		1,969
Thereafter	802
2025			2,992
Thereafter			802
Total lease payments	17,669		16,585
Less: Interest	(973)		(966)
Present value of lease liabilities	16,696		15,619
Less: Current portion of lease obligation	(4,494)		(4,112)
Finance lease obligations	12,202		11,507
Operating Lease Liabilities, Payments Due
Remainder of 2020	1,845
2022	2,128		2,343
2023	1,839		2,002
2024	1,702		1,821
2025	222		1,700
Thereafter	674
2024			222
Thereafter			675
Total lease payments	8,410		8,763
Less: Interest	(635)		(713)
Present value of lease liabilities	7,775		8,050
Less: Current portion of lease obligation	(2,172)		(2,050)
Total long-term lease obligation	$ 5,603		$ 6,000

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Finance Lease, Payments

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