Business Combination (Schedule of Pro Forma Information) (Details) - Nesscap - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Net revenues	$ 35,816	$ 31,177	$ 104,771	$ 109,817
Net loss	$ (13,573)	$ (8,133)	$ (35,165)	$ (14,788)
Business Acquisition, Pro Forma Information [Abstract]
Basic (in dollars per share)	$ (0.37)	$ (0.23)	$ (0.96)	$ (0.41)
Business Acquisition, Pro Forma Information, Weighted Average Common Shares Outstanding [Abstract]
Basic and diluted (in shares)	37,008	36,136	36,706	35,975