Intangible Assets and Goodwill (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Finite Lived Intangible Assets [Line Items]
Amortization expense, intangible assets	$ 61	$ 100
Goodwill, Impairment Loss	$ 0	$ 0
Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived intangible asset, useful life	2 years
Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Finite-Lived intangible asset, useful life	12 years