Business Combination (Schedule of Pro Forma Information) (Details) - Nesscap - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Net revenues	$ 135,534	$ 141,724
Net loss	$ (43,849)	$ (28,701)
Business Acquisition, Pro Forma Information [Abstract]
Basic and diluted (in dollars per share)	$ (1.19)	$ (0.80)
Business Acquisition, Pro Forma Information, Weighted Average Common Shares Outstanding [Abstract]
Basic and diluted (in shares)	36,809	36,017