Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 1,092		$ 1,153
Amortization of intangible assets	61	$ 28
Developed Technology Rights, Placed in Service [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 700
Developed Technology Rights, Placed in Service [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of finite-lived intangible assets	3 years
Developed Technology Rights, Placed in Service [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of finite-lived intangible assets	5 years
Developed Technology Rights, Not Placed in Service [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 400