WARRANTS (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2016	Feb. 29, 2016
Warrants to purchase common stock issued and outstanding
Number of Warrants		3,391,439
Weighted average exercise price		$ 7.94
Weighted average life in years		2 years 11 months 27 days
Public Offering, March 2016
Warrants to purchase common stock issued and outstanding
Number of shares issued under underwritten public offering (in shares)	4,293,333
Warrants | Public Offering, March 2016
Warrants to purchase common stock issued and outstanding
Percentage of warrant exercises price over public offering price	133.00%
Common Stock | Public Offering, March 2016
Warrants to purchase common stock issued and outstanding
Warrants for purchase of common stock (in shares)	2,146,666
Equity issuance (in price per unit)	$ 7.49
Warrants
Warrants to purchase common stock issued and outstanding
Warrant Exercise Price	$ 3.87			$ 5.75
Warrants for purchase of common stock (in shares)	587,950			395,716
Fair value of warrants
Expected volatility (as a percent)		78.00%	89.00%
Risk-free interest rate (as a percent)		1.30%	1.20%
Expected term (in years)		2 years 1 month 6 days	2 years 4 months 24 days
Warrants | Public Offering, March 2016
Warrants to purchase common stock issued and outstanding
Warrant Exercise Price	$ 10.00
Equity issuance (in price per unit)	$ 0.01
Percentage of warrant exercises price over public offering price	133.00%
Fair value of warrants
Fair value of warrants		$ 11.7
Expected volatility (as a percent)		112.80%
Risk-free interest rate (as a percent)		1.30%
Expected term (in years)		5 years
Expected dividend yield (as a percent)		0.00%
Common Stock And Warrants | Public Offering, March 2016
Warrants to purchase common stock issued and outstanding
Number of shares issued under underwritten public offering (in shares)	4,293,333
Net proceeds from issuance of equity (in dollars)	$ 29.9
Equity | Derivative with Exercise Price One
Warrants to purchase common stock issued and outstanding
Warrants Issued Year		2010
Number of Warrants		343,931
Warrant Exercise Price		$ 5.60
Equity | Derivative with Exercise Price One | Minimum
Warrants to purchase common stock issued and outstanding
Expiration date		Oct. 26, 2017
Equity | Derivative with Exercise Price One | Maximum
Warrants to purchase common stock issued and outstanding
Expiration date		Dec. 03, 2017
Equity | Derivative with Exercise Price Two
Warrants to purchase common stock issued and outstanding
Warrants Issued Year		2010
Number of Warrants		306,838
Warrant Exercise Price		$ 4.00
Equity | Derivative with Exercise Price Two | Minimum
Warrants to purchase common stock issued and outstanding
Expiration date		Aug. 30, 2017
Equity | Derivative with Exercise Price Two | Maximum
Warrants to purchase common stock issued and outstanding
Expiration date		Dec. 03, 2017
Equity | Derivative with Exercise Price Three
Warrants to purchase common stock issued and outstanding
Warrants Issued Year		2012
Number of Warrants		6,054
Warrant Exercise Price		$ 6.64
Expiration date		Oct. 05, 2019
Equity | Derivative with Exercise Price Five
Warrants to purchase common stock issued and outstanding
Warrants Issued Year		2016
Number of Warrants		2,146,666
Warrant Exercise Price		$ 10.00
Expiration date		Mar. 18, 2021
Liability | Derivative with Exercise Price Four
Warrants to purchase common stock issued and outstanding
Warrants Issued Year		2014
Number of Warrants		587,950
Warrant Exercise Price		$ 3.87
Expiration date		May 09, 2019