CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total		Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance (in shares) at Dec. 31, 2016			53,148,441
Balance at Dec. 31, 2016	$ 56,667	[1]	$ 551	$ 102,624	$ (1,605)	$ (44,903)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	2,528			2,528
Stock options exercised (in shares)			171,566
Stock options exercised	269		$ 2	267
Issuance of stock for vested restricted stock units (in shares)			71,941
Issuance of stock for vested restricted stock units	0		$ 1	(1)
Cumulative translation adjustment	133				133
Net loss	(9,070)					(9,070)
Balance (in shares) at Sep. 30, 2017			53,391,948
Balance at Sep. 30, 2017	$ 50,527		$ 554	$ 105,418	$ (1,472)	$ (53,973)

[1] Derived from the audited December 31, 2016 financial statements