STOCK-BASED COMPENSATION, Employee Stock Purchase Plan (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Jun. 25, 2009
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Proceeds from common stock issued	$ 307,342	$ 245,684	$ 130,184
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)	3M
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)	10,531	19,583	14,056
Proceeds from common stock issued	307,342	245,684	130,184
Employee Stock Purchase Plan (ESPP) [Member] | Selling, General and Adminstrative Expense [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Charges to expense	31,096	26,061	15,276
Employee Stock Purchase Plan (ESPP) [Member] | Research and Development Expense [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Charges to expense	$ 76,088	$ 50,834	$ 27,718