Lease Obligations (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Capital Lease Obligations
Remainder of 2018	$ 592
2019	1,185
2020	1,185
2021	355
2022	0
Thereafter	0
Total minimum lease payments	3,317
Interest	(147)
Net present value of minimum lease payments	3,170
Less: Current portion of capital lease obligations	1,102	$ 1,086
Long-term capital lease obligations	2,068	$ 2,629
Operating Lease Obligations
Remainder of 2018	2,219
2019	3,413
2020	2,338
2021	1,680
2022	1,081
Thereafter	514
Total minimum lease payments	$ 11,245