DERIVATIVE FINANCIAL INSTRUMENTS - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Derivative Instruments and Hedging Activities Disclosure [Line Items]
Net gain (loss) on derivative financial instruments	$ 3,089,000	$ (855,000)
Net deferred gains expected to be reclassified out of AOCI over the next 12 months	2,700,000
Notional value of foreign currency forward-exchange contracts	295,300,000
Notional value of foreign currency forward-exchange contracts, maturity date	Dec. 31, 2013
Foreign currency cash flow hedge contracts, fair value	$ 5,000,000