Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Product Revenue	$ 17,419	$ 19,445
Service Revenue	2,029	2,293
Revenue, Net	19,448	21,738
Cost of Product Revenue	12,535	14,085
Cost of Service Revenue	903	822
Gross Profit	6,010	6,831
Sales and Marketing	4,390	4,797
Research and Development	1,288	1,771
General and Administrative	5,421	4,989
Operating Expenses	11,099	11,557
Loss from Operations	(5,089)	(4,726)
Other Expense
Interest Expense	(453)	(1,190)
Interest Expense, Related Party	(655)	(660)
Other expense, net	(286)	(927)
Loss before Income Taxes	(6,483)	(7,503)
Provision for income taxes	340	306
Net Loss	$ (6,823)	$ (7,809)
Loss Per Share, Basic and Diluted [Abstract]
Basic and Diluted	$ (0.89)	$ (2.50)
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic and Diluted	7,679	3,118