Goodwill and Intangibles - Intangible assets subject to amortization (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,080	$ 3,080
Accumulated Amortization	(2,880)	(2,435)
Net Book Value	$ 200	645
Weighted Average Remaining Life, Intangible Assets	6 months
Technology
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,080	3,080
Accumulated Amortization	(2,880)	(2,435)
Net Book Value	$ 200	$ 645