Lease Obligations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Lease termination period	10 years
Lease, Cost [Abstract]
Operating lease cost	$ 2,159	$ 2,211
Short-term lease cost	3,281	4,743
Finance lease cost:
Amortization of right-of-use assets	56	32
Interest on lease liabilities	8	2
Total finance lease cost	64	34
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	2,105	2,383
Operating cash flows from finance leases	8	2
Financing cash flows from finance leases	56	32
Right-of-use assets obtained in exchange for lease obligations (noncash):
Operating leases	3,540	3,101
Finance leases	0	$ 76
Assets and Liabilities, Lessee [Abstract]
Operating lease right-of-use assets ($3,938 and $3,817 related to VIEs)	14,790		$ 13,979
Current portion of long-term lease obligations	7,410		7,095
Long-term lease obligations	7,465		6,976
Total operating lease liabilities	14,875		14,071
Property and equipment, at cost	1,479		1,479
Accumulated depreciation	(537)		(482)
Property and equipment, net	942		997
Current maturities of long-term debt	198		204
Long-term debt	509		560
Total finance lease liabilities	$ 707		$ 764
Weighted average remaining lease term: operating leases	2 years 6 months 26 days		2 years 6 months 7 days
Weighted average remaining lease term: financing leases	3 years 10 months 10 days		4 years 11 days
Weighted average discount rate: operating lease	6.00%		6.00%
Weighted average discount rate: financing lease	4.20%		4.20%
Operating Leases
2020 (excluding the three months ended March 31, 2020)	$ 5,159
2021	5,720
2022	3,768
2023	1,624
2024	198
Thereafter	11
Total lease payments	16,480
Less imputed interest	(1,605)
Total operating lease liabilities	14,875		$ 14,071
Finance Leases
2020 (excluding the three months ended March 31, 2020)	168
2021	208
2022	161
2023	154
2024	77
Thereafter	0
Total lease payments	768
Less imputed interest	(61)
Total finance lease liabilities	$ 707		$ 764
Minimum
Lessee, Lease, Description [Line Items]
Lease renewal term	1 month
Maximum
Lessee, Lease, Description [Line Items]
Lease renewal term	5 years