COMMON STOCK (Details) $ / shares in Units, $ in Thousands		1 Months Ended				12 Months Ended
	Apr. 08, 2015 shares	Jul. 31, 2015 USD ($)	Jan. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) $ / shares shares	Jan. 31, 2014 USD ($) shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) shares
Common stock, number of shares, par value and other disclosures
Common stock, authorized				50,000,000		50,000,000	50,000,000
Common stock, par value (in dollars per share) | $ / shares				$ 0.00001		$ 0.00001	$ 0.00001
Common stock, issued				23,453,000		27,555,948	23,453,000
Common stock, outstanding				23,453,000		27,555,948	23,453,000
Common stock disclosures
Proceeds from exercise of stock options | $						$ 1,068	$ 212	$ 456
Proceeds from exercise of warrants | $						7,789	12	15,952
Issuance of common stock to 401(k) plan (in dollars) | $						201	173	192
Issuance of stock for services (in dollars) | $							477
Fair value of stock issued for services | $							477
Stock Issued During Period, Shares, Reverse Stock Splits	1,514
Reverse stock split	.25
Fair value of issuance of common stock to 401(k) plan | $						201	$ 173	$ 192
Sales Agreement
Common stock disclosures
Net proceeds from issuance of equity (in dollars) | $						$ 3,442
Aggregate proceeds from sale agreement of shares of common stock | $		$ 50,000
Percentage of Commission on the gross proceeds from sales agreement of shares of common stock		3
Shares of common stock issued						388,245
Common Stock
Common stock disclosures
Issuance of common stock upon exercise of stock options (in shares)						316,177	132,900	147,221
Issuance of stock options to purchase common stock (in shares)						52,224
Issuance of stock for services (in shares)						14,961
Issuance of stock (in shares)						301,216
Proceeds from exercise of stock options | $						$ 1,068	$ 212	$ 456
Issuance of common stock upon exercise of warrants (in shares)						1,379,575	9,975	3,056,211
Warrants to purchase through cashless exercise provisions (in shares)						40,955	15,655	156,759
Shares issued through cashless exercise provisions						25,052	6,903
Warrants to purchase exercise through cash (in shares)						1,354,523	3,072	2,953,334
Proceeds from exercise of warrants | $						$ 7,789	$ 12	$ 15,952
Issuance of common stock to 401(k) plan (in shares)						17,437	41,753	19,721
Issuance of stock (in shares)						2,388,245	3,500,312
Issuance of stock for services (in dollars) | $					$ 282
Fair value of stock issued for services | $				$ 195
Issuance of stock for services (in shares)				41,821			74,626
Number of shares issued under underwritten public offering (in shares)						2,388,245	3,500,312
Fair value of issuance of common stock to 401(k) plan | $						$ 201	$ 173	$ 192
Common Stock | Michael J. Astrue, Interim Chief Executive Officer
Common stock disclosures
Issuance of stock for services (in shares)					27,212
Common Stock | Gregory D. Perry, Interim Chief Financial Officer
Common stock disclosures
Issuance of stock for services (in shares)					5,594
Common Stock | Public offering
Common stock disclosures
Issuance of stock (in shares)			2,000,000
Net proceeds from issuance of equity (in dollars) | $			$ 11,038
Number of shares issued under underwritten public offering (in shares)			2,000,000
Common Stock | Public Offering - Underwritten
Common stock disclosures
Equity issuance (in price per unit) | $ / shares						$ 4.60
Issuance of stock (in shares)						1,750,156	3,500,312
Net proceeds from issuance of common stock | $						$ 14,600
Number of shares issued under underwritten public offering (in shares)						1,750,156	3,500,312