SHAREHOLDERS' EQUITY - Preferred Stock and Warrants (Details) - $ / shares	3 Months Ended
	Mar. 31, 2017	Jan. 31, 2017	Jan. 30, 2017	Jan. 20, 2017	Dec. 31, 2016	Mar. 31, 2016
Preferred Stock
Preferred stock shares authorized	10,000,000				10,000,000
Preferred stock par value (in dollars per share)	$ 0.01				$ 0.01
Preferred stock shares issued	0				0
Preferred stock shares outstanding	0				0
Convertible Notes | Private Placement
Warrants
Warrants issued (in shares)		6,666,666
Preferred Stock
Preferred Stock
Preferred stock shares authorized	10,000,000
Preferred stock par value (in dollars per share)	$ 0.01
Preferred stock shares issued	0
Preferred stock shares outstanding	0
Warrants
Warrants
Warrants issued (in shares)						0
Warrants outstanding (in shares)	7,588,800
Warrants | Underwriter warrants
Warrants
Warrants outstanding (in shares)	255,600
Warrants exercise price (in dollars per share)	$ 1.25
Warrants exercisable expire date	Nov. 12, 2020
Warrants | Investor warrants
Warrants
Warrants issued (in shares)			3,154,601	2,216,978
Warrants outstanding (in shares)	6,666,600
Warrants exercise price (in dollars per share)	$ 3.00		$ 3.00	$ 3.00
Warrants exercisable expire date	Dec. 31, 2019
Warrants | Placement agent warrants
Warrants
Warrants issued (in shares)			315,526	221,744
Warrants outstanding (in shares)	666,600
Warrants exercise price (in dollars per share)	$ 1.50		$ 1.50	$ 1.50
Warrants exercisable expire date	Dec. 31, 2021