CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Balance at Dec. 31, 2013	$ 58,174	$ 154	$ 74,273	$ (1,009)	$ (15,244)
Balance (in shares) at Dec. 31, 2013		15,368,356
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock	248	$ 0	248
Issuance of common stock (in shares)		46,447
Share-based compensation expense	1,535		1,535
Net income (loss)	(5,460)				(5,460)
Change in accumulated other comprehensive income (loss)	184			184
Balance at Dec. 31, 2014	54,681	$ 154	76,056	(825)	(20,704)
Balance (in shares) at Dec. 31, 2014		15,414,803
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock	939	$ 3	936
Issuance of common stock (in shares)		284,595
Share-based compensation expense	1,447		1,447
Net income (loss)	(15,616)				(15,616)
Change in accumulated other comprehensive income (loss)	474			474
Balance at Dec. 31, 2015	$ 41,925	$ 157	78,439	(351)	(36,320)
Balance (in shares) at Dec. 31, 2015	15,699,398	15,699,398
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock	$ 400	$ 1	399
Issuance of common stock (in shares)		112,118
Share-based compensation expense	1,722		1,722
Net income (loss)	395				395
Change in accumulated other comprehensive income (loss)	302			302
Balance at Dec. 31, 2016	$ 44,744	$ 158	$ 80,560	$ (49)	$ (35,925)
Balance (in shares) at Dec. 31, 2016	15,811,516	15,811,516