STOCKHOLDERS' EQUITY AND SHARE-BASED COMPENSATION EXPENSE, Employee Stock Purchase Plan (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Stockholders Equity And Share Based Compensation Expense [Abstract]
Shares reserve for issuance under Employee stock purchase plan (in shares)	7,000,000
ESPP purchase consideration as percentage of market value (in hundredths)	85.00%
ESPP offering period	12 months
ESPP number of purchase periods per offering period	2
Number of months in each purchase period	6 months
Look-back period for ESPP	12 months
Percentage of gross compensation through payroll deductions employees can invest (in hundredths)	15.00%
Number of shares of common stock employee permitted to purchase (in shares)	750
Number of participants in ESPP	347
Number of shares issued ESPP (in shares)	305,000
Share-based Compensation Arrangement by Share-based Payment Award, Per Share Weighted Average Price of Shares Purchased	$ 3.37
Allocated Share-based Compensation Expense	$ 617
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology ESPP [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate for ESPP	0.10%	0.10%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate for ESPP	0.00%	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate for ESPP	64.00%	67.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term for ESPP	8 months 12 days	8 months 12 days