Restructuring Costs - Components of Restructuring Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Restructuring Reserve [Roll Forward]
Balance, Beginning of the year	$ 1,328	$ 0
Contract termination costs	0	427
Severance and other associated costs	1,585	901
Cash payments	(1,328)	0
Wind down costs of legacy platform	966	0
Balance, End of year	$ 2,551	$ 1,328