DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details)	12 Months Ended
	Dec. 31, 2011 USD ($) hedge	Dec. 31, 2011 BRL hedge	Dec. 31, 2010 USD ($)	Dec. 31, 2010 BRL	Dec. 31, 2011 Foreign Exchange Contracts Prepayments and other USD ($)	Dec. 31, 2011 Foreign Exchange Contracts Accounts payable and accrued liabilities USD ($)	Dec. 31, 2011 Foreign Exchange Contracts Deferred and other non-current liabilities USD ($)	Dec. 31, 2011 Derivative Contracts Designated as Hedging Instruments USD ($)	Dec. 31, 2010 Derivative Contracts Designated as Hedging Instruments USD ($)	Dec. 31, 2011 Derivative Contracts Designated as Hedging Instruments Foreign Exchange Contracts Accounts payable and accrued liabilities USD ($)	Dec. 31, 2010 Derivative Contracts Designated as Hedging Instruments Foreign Exchange Contracts Accounts payable and accrued liabilities USD ($)	Dec. 31, 2010 Derivative Contracts Designated as Hedging Instruments Foreign Exchange Contracts Deferred and other non-current liabilities USD ($)	Dec. 31, 2010 Derivative Contracts Designated as Hedging Instruments Interest Rate Contracts Miscellaneous USD ($)	Dec. 31, 2011 Derivative Contracts Not Designated as Hedging Instruments USD ($)	Dec. 31, 2010 Derivative Contracts Not Designated as Hedging Instruments USD ($)	Dec. 31, 2011 Derivative Contracts Not Designated as Hedging Instruments Foreign Exchange Contracts Prepayments and other USD ($)	Dec. 31, 2010 Derivative Contracts Not Designated as Hedging Instruments Foreign Exchange Contracts Prepayments and other USD ($)	Dec. 31, 2011 Derivative Contracts Not Designated as Hedging Instruments Foreign Exchange Contracts Accounts payable and accrued liabilities USD ($)	Dec. 31, 2010 Derivative Contracts Not Designated as Hedging Instruments Foreign Exchange Contracts Accounts payable and accrued liabilities USD ($)	Dec. 31, 2011 Derivative Contracts Not Designated as Hedging Instruments Foreign Exchange Contracts Deferred and other non-current liabilities USD ($)	Dec. 31, 2010 Derivative Contracts Not Designated as Hedging Instruments Foreign Exchange Contracts Deferred and other non-current liabilities USD ($)
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES
Number of foreign currency cash flow hedge held	1	1
Notional amount of the foreign currency forward contracts, designated as a cash flow hedge	$ 700,000	1,300,000	$ 1,600,000	2,700,000
Maximum period for which forecasted transactions are hedged by foreign currency forward contracts under cash flow hedge (in months)	3 months	3 months
Aggregate amount of forward exchange contracts, outstanding	280,500,000
Fair Value of Derivative Instruments
Derivative Assets					500,000				155,000				155,000	520,000	1,660,000	520,000	1,660,000
Derivative Liabilities						$ 8,700,000	$ 2,000,000	$ 302,000	$ 686,000	$ 302,000	$ 309,000	$ 377,000		$ 10,388,000	$ 3,537,000			$ 8,383,000	$ 1,089,000	$ 2,005,000	$ 2,448,000