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INCOME TAXES (Details) (USD $)
Mar. 31, 2012
Dec. 31, 2011
Gross unrecognized tax benefits, roll forward    
Balance at the beginning of the period $ 1,910,000 $ 1,910,000
Balance at the end of the period 1,910,000 1,910,000
Accrued interest and penalties related to unrecognized tax benefits $ 500,000