Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accum. Deficit
Balance, beginning amount at Dec. 31, 2014	$ 18,124	$ 2	$ 23,126	$ (5,004)
Balance, beginning shares at Dec. 31, 2014		22,448,098
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	766		766
Proceeds from exercise of stock options	54		54
Proceeds from exercise of stock options, shares		192,513
Accretion of Series A preferred stock	0
Net Income (Loss)	(12,602)			(12,602)
Balance, ending amount at Dec. 31, 2015	6,342	$ 2	23,946	(17,606)
Balance, ending shares at Dec. 31, 2015		22,640,611
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	872		872
Proceeds from exercise of stock options	111		111
Proceeds from exercise of stock options, shares		462,117
Accretion of Series A preferred stock	(6,789)		(6,789)
Net Income (Loss)	350			350
Balance, ending amount at Dec. 31, 2016	$ 886	$ 2	$ 18,140	$ (17,256)
Balance, ending shares at Dec. 31, 2016		23,102,728