CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Additional Paid in Capital Shares to be Issued	Accumulated Deficit
Beginning balance at Dec. 31, 2013	$ 4,783	$ 84	$ 20,097	$ 0	$ (15,398)
Beginning Balance (in shares) at Dec. 31, 2013		84,238
Issuance of common stock, net of fees	13,813	$ 5	13,808
Issuance of common stock, net of fees (in shares)		5,000
Exercise of stock options	436	$ 1	435
Exercise of stock options (in shares)		525
Stock-based compensation	404		404
Net loss	(4,519)				(4,519)
Ending balance at Dec. 31, 2014	14,917	$ 90	34,744	0	(19,917)
Ending balance (in shares) at Dec. 31, 2014		89,763
Stock-based compensation	368		368
Net loss	(5,467)				(5,467)
Ending balance at Dec. 31, 2015	9,818	$ 90	35,112	0	(25,384)
Ending balance (in shares) at Dec. 31, 2015		89,763
Issuance of common stock, net of fees	4,388	$ 6	4,382
Issuance of common stock, net of fees (in shares)		5,882
Stock-based compensation	784		784
Net loss	(6,750)				(6,750)
Ending balance at Dec. 31, 2016	$ 8,240	$ 96	$ 40,278	$ 0	$ (32,134)
Ending balance (in shares) at Dec. 31, 2016		95,645