STOCK-BASED COMPENSATION, Employee Stock Purchase Plan (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Jun. 25, 2009
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Proceeds from common stock issued			$ 334,000
Employee Stock Purchase Plan (ESPP) [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Reserved for issuance (in shares)					1,000,000
Purchase period (in months)			3 months
Percentage of market value (in hundredths)			85.00%
Maximum allocation of base compensation (in hundredths)			10.00%
Maximum shares per purchase date (in shares)			12,500
Maximum value per calendar year, per employee			$ 25,000
Common stock issued (in shares)			9,044	9,162
Proceeds from common stock issued			$ 263,000	$ 279,000
Employee Stock Purchase Plan (ESPP) [Member] | Research and Development Expense [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Charges to expense	$ 12,000	$ 16,000	39,000	41,000
Employee Stock Purchase Plan (ESPP) [Member] | Selling, General and Administrative Expenses [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Charges to expense	$ 11,000	$ 12,000	$ 32,000	$ 35,000