SHARE-BASED COMPENSATION - Fair Value of Market Condition Shares Plan (Detail)	9 Months Ended
	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	0.82%
Expected life of option	5 years 6 months
Expected equity volatility	75.20%
Dividend yield	0.00%
Weighted average, risk free interest rate	0.82%
Expected stock price volatility	75.20%
Tranche B [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	0.82%
Expected life of option	5 years 6 months
Expected equity volatility	75.20%
Dividend yield	0.00%
Weighted average, risk free interest rate	0.82%
Expected stock price volatility	75.20%
Tranche A [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	0.71%
Expected life of option	5 years
Expected equity volatility	78.50%
Dividend yield	0.00%
Weighted average, risk free interest rate	0.71%
Expected stock price volatility	78.50%
Market Condition Shares Granted 2012 Plan Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	0.14%
Expected life of option	10 months 21 days
Expected equity volatility	49.92%
Expected stock price volatility (small-cap stock index)	29.14%
Dividend yield	0.00%
Weighted average, risk free interest rate	0.14%
Expected stock price volatility	49.92%
Expected stock price volatility (small-cap stock index)	29.14%
Market Condition Shares Granted 2012 Plan Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	0.14%
Expected life of option	10 months 21 days
Expected equity volatility	49.92%
Dividend yield	0.00%
Weighted average, risk free interest rate	0.14%
Expected stock price volatility	49.92%
Market Condition Shares Granted 2011 Plan One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	0.25%
Expected life of option	10 months 18 days
Expected equity volatility	64.73%
Expected stock price volatility (small-cap stock index)	29.39%
Dividend yield	0.00%
Weighted average, risk free interest rate	0.25%
Expected stock price volatility	64.73%
Expected stock price volatility (small-cap stock index)	29.39%
Market Condition Shares Granted 2011 Plan Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	0.58%
Expected life of option	1 year 10 months 21 days
Expected equity volatility	64.73%
Dividend yield	0.00%
Weighted average, risk free interest rate	0.58%
Expected stock price volatility	64.73%
Market Condition Shares Granted 2011 Plan Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	0.58%
Expected life of option	1 year 10 months 21 days
Expected equity volatility	64.73%
Expected stock price volatility (small-cap stock index)	29.39%
Dividend yield	0.00%
Weighted average, risk free interest rate	0.58%
Expected stock price volatility	64.73%
Expected stock price volatility (small-cap stock index)	29.39%
Market Condition Shares Granted 2010 Plan One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	1.27%
Expected life of option	2 years 9 months
Expected equity volatility	95.21%
Dividend yield	0.00%
Weighted average, risk free interest rate	1.27%
Expected stock price volatility	95.21%
Market Condition Shares Granted 2010 Plan Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%
Risk free interest rate	1.27%
Expected life of option	2 years 9 months
Expected equity volatility	95.21%
Expected stock price volatility (small-cap stock index)	37.51%
Dividend yield	0.00%
Weighted average, risk free interest rate	1.27%
Expected stock price volatility	95.21%
Expected stock price volatility (small-cap stock index)	37.51%