Intangible Assets - Gross Carrying Amount (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Gross Carrying Amount	$ 4,965	$ 5,113
Accumulated amortization	(1,032)	(469)
Total	$ 3,933	$ 4,644
Acquired technology
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Weighted Average Amortization Period	9 years	9 years
Gross Carrying Amount	$ 4,645	$ 4,793
Accumulated amortization	(928)	(403)
Total	$ 3,717	$ 4,390
Customer relationships
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Weighted Average Amortization Period	10 years	10 years
Gross Carrying Amount	$ 260	$ 260
Accumulated amortization	(71)	(45)
Total	$ 189	$ 215
Trademark
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Weighted Average Amortization Period	5 years	5 years
Gross Carrying Amount	$ 60	$ 60
Accumulated amortization	(33)	(21)
Total	$ 27	$ 39
Minimum
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Intangible asset useful lives	5 years
Maximum
Gross carrying amount and accumulated amortization of acquired identifiable intangible assets
Intangible asset useful lives	10 years