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Lease Obligations (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Capital Lease Obligations
2018	$ 1,185
2019	1,185
2020	1,185
2021	360
2022	0
Thereafter	0
Total minimum lease payments	3,915
Interest	(200)
Net present of minimum lease payments	3,715
Less: Current portion of capital lease obligations	1,086	$ 1,085
Long-term capital lease obligations	2,629	$ 3,833
Operating Lease Obligations
2018	3,599
2019	2,885
2020	2,187
2021	1,582
2022	1,014
Thereafter	564
Total minimum lease payments	$ 11,831

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