Accrued Liabilities and Other (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Accrued vacation	$ 901	$ 801
Accrued paid personal leave	590	585
Accrued bonus	1,346	1,549
Other	351	557
Total	$ 3,188	$ 3,492