STOCK-BASED COMPENSATION, Employee Stock Purchase Plan (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Jun. 25, 2009
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Proceeds from common stock issued	$ 130,000
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)	2,143	3,790
Proceeds from common stock issued	$ 99,000	$ 90,000
Employee Stock Purchase Plan (ESPP) [Member] | Selling, General and Administrative Expenses [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Charges to expense	10,000	11,000
Employee Stock Purchase Plan (ESPP) [Member] | Research and Development Expense [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Charges to expense	17,000	13,000
Employee Stock Purchase Plan (ESPP) [Member] | Cost of Sales [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Charges to expense	$ 4,000	$ 0