ORGANIZATION AND DESCRIPTION OF BUSINESS (Liquidity and Capital Resources) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014
Subsidiary, Sale of Stock [Line Items]
Accumulated deficit	$ 36,976,000	$ 36,976,000		$ 30,912,000
Cash and cash equivalents	1,488,000	1,488,000	$ 1,782,000	2,501,000	$ 5,803,000
Short-term investments	4,300,000	4,300,000		$ 3,000,000
Existing cash balances and investments	5,700,000	5,700,000
Net cash used in operating activities per quarter		(4,606,000)	$ (3,554,000)
Cash used per quarter	2,400,000
Net proceeds from units issued in the period		5,177,000
Shelf registration statement, public offerings, maximum aggregate proceeds	$ 35,000,000.0	$ 35,000,000.0