GOODWILL AND OTHER INTANGIBLE ASSETS - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Expected Amortization Expense [Line Items]
Reduction in gross amount of finite-lived intangible assets due to write off certain acquired patents	$ (7,600,000)
Intangible asset impairment	7,134,000
Amortization expense	12,624,000	12,624,000	12,624,000
Future amortization expense, year one	12,600,000
Future amortization expense, year two	12,600,000
Future amortization expense, year three	12,600,000
Future amortization expense, year four	12,600,000
Future amortization expense, year five	12,600,000
Future amortization expense, after year five	$ 63,000,000