Lease Obligations (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Capital Lease Obligations
Remainder of 2018	$ 889
2019	1,185
2020	1,185
2021	357
2022	0
Thereafter	0
Total minimum lease payments	3,616
Interest	(173)
Net present value of minimum lease payments	3,443
Less: Current portion of capital lease obligations	1,094	$ 1,086
Long-term capital lease obligations	2,349	$ 2,629
Operating Lease Obligations
Remainder of 2018	3,124
2019	3,101
2020	2,225
2021	1,581
2022	1,009
Thereafter	487
Total minimum lease payments	$ 11,527