STOCKHOLDERS' EQUITY (Details) - USD ($)						1 Months Ended		12 Months Ended
	Oct. 02, 2017	Sep. 28, 2017	Feb. 22, 2017	Sep. 14, 2016	Apr. 25, 2016	Dec. 31, 2017	Apr. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Class of Stock [Line Items]
Common stock, shares authorized						47,000,000		47,000,000	47,000,000
Class of Warrant or Right, Outstanding						3,730,255		3,730,255	2,915,559		804,463
Net proceeds from the sale of common stock from private placement offerings								$ 15,950,000	$ 5,177,000
Legal Fees			$ 29,000					750,000
Sales of common stock, net of offering costs								15,950,000	$ 15,798,000
Maximum aggregate proceeds from public offerings						$ 35,000,000.0		$ 35,000,000.0
Preferred stock, shares authorized						3,000,000		3,000,000	3,000,000
Placement agents
Class of Stock [Line Items]
Share price (in dollars per share)		$ 4.85
Capital Units
Class of Stock [Line Items]
Sales of common stock, net of offering costs (in shares)								2,715,000
Sales of common stock, net of offering costs								$ 11,500,000
Securities available for issuance						$ 23,500,000		$ 23,500,000
Capital Units | Investors, Executives and Board Members
Class of Stock [Line Items]
Sales of common stock, net of offering costs (in shares)					1,996,880
Share price (in dollars per share)					$ 2.985
Net proceeds from the sale of common stock from private placement offerings					$ 6,000,000
Sales of common stock, net of offering costs					$ 5,200,000
Capital Units | Institutional and Individual Investors
Class of Stock [Line Items]
Share price (in dollars per share)	$ 4.85	4.70	$ 4.61
Capital Units | Placement agents
Class of Stock [Line Items]
Sales of common stock, net of offering costs (in shares)					99,844
Share price (in dollars per share)		$ 4.85			$ 2.86
Common Stock
Class of Stock [Line Items]
Sales of common stock, net of offering costs (in shares)	1		1	2,715,000				3,603,817	4,711,880
Share price (in dollars per share)			$ 8.25	$ 4.25
Sales of common stock, net of offering costs								$ 4,000	$ 5,000
Common Stock | Placement agents
Class of Stock [Line Items]
Sales of common stock, net of offering costs (in shares)				135,750
Investment warrants, exercise price				$ 4.25
Period end after closing								2 years
Common stock warrants
Class of Stock [Line Items]
Class of Warrant or Right, Outstanding	1		1
Net proceeds from the sale of common stock from private placement offerings				$ 11,500,000
Common stock warrants | Investors, Executives and Board Members
Class of Stock [Line Items]
Investment warrants, exercise price					$ 2.86
Sales of common stock, net of offering costs				$ 10,600,000
Common stock warrants | Institutional and Individual Investors
Class of Stock [Line Items]
Period start after closing		6 months	6 months
Period end after closing		36 months	30 months
Private Placement, Offering Two | Placement agents
Class of Stock [Line Items]
Partners' Capital Account, Units, Sold in Private Placement		11,567
Private Placement, Offering Two | Capital Units | Institutional and Individual Investors
Class of Stock [Line Items]
Net proceeds from the sale of common stock from private placement offerings	$ 1,100,000	$ 8,200,000	$ 7,500,000
Proceeds from Issuance of Private Placement, Net of Offering Costs	$ 1,000,000	$ 7,500,000
Partners' Capital Account, Units, Sold in Private Placement	231,338
Private Placement, Offering Two | Common stock warrants | Placement agents
Class of Stock [Line Items]
Partners' Capital Account, Units, Sold in Private Placement	98,846
Private Placement Warrants
Class of Stock [Line Items]
Share price (in dollars per share)										$ 2.90
Class of Warrant or Right, Outstanding						891,063		891,063	1,995,124		0
Sales of common stock, net of offering costs						$ 2,400,000
Private Placement Warrants | Investors, Executives and Board Members
Class of Stock [Line Items]
Period start after closing					6 months
Period end after closing					36 months
Private Placement Warrants | Placement agents
Class of Stock [Line Items]
Sales of common stock, net of offering costs (in shares)					99,844	836,780
Share price (in dollars per share)					$ 2.86
Private Placement Warrants | Private Placement | Investors, Executives and Board Members
Class of Stock [Line Items]
Sales of common stock, net of offering costs (in shares)							1,996,880
Private Placement Warrants | Private Placement | Capital Units | Institutional and Individual Investors
Class of Stock [Line Items]
Sales of common stock, net of offering costs (in shares)	1,976,919	1,745,581	1,626,898