DERIVATIVES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 Y	Dec. 31, 2011 Other Current Assets	Dec. 31, 2010 Other Current Assets	Dec. 31, 2011 Other Current Liabilities	Dec. 31, 2010 Other Current Liabilities	Dec. 31, 2011 Designated as hedging instruments Foreign exchange contracts	Dec. 31, 2010 Designated as hedging instruments Foreign exchange contracts	Dec. 31, 2011 Designated as hedging instruments Foreign exchange contracts Other Current Assets	Dec. 31, 2010 Designated as hedging instruments Foreign exchange contracts Other Current Assets	Dec. 31, 2011 Designated as hedging instruments Foreign exchange contracts Other Current Liabilities	Dec. 31, 2010 Designated as hedging instruments Foreign exchange contracts Other Current Liabilities	Dec. 31, 2011 Not designated as hedging instruments Foreign exchange contracts	Dec. 31, 2010 Not designated as hedging instruments Foreign exchange contracts	Dec. 31, 2011 Not designated as hedging instruments Foreign exchange contracts Other Current Assets	Dec. 31, 2010 Not designated as hedging instruments Foreign exchange contracts Other Current Assets	Dec. 31, 2011 Not designated as hedging instruments Foreign exchange contracts Other Current Liabilities	Dec. 31, 2010 Not designated as hedging instruments Foreign exchange contracts Other Current Liabilities	Dec. 31, 2011 Not designated as hedging instruments Commodity contracts Other Current Assets	Dec. 31, 2010 Not designated as hedging instruments Commodity contracts Other Current Liabilities	Dec. 31, 2011 Not designated as hedging instruments Silver forward contract ozt	Dec. 31, 2010 Not designated as hedging instruments Silver forward contract ozt
DERIVATIVES
Maximum period for which derivative contracts cover currency and commodity exposures (in years)	2
Hedge ineffectiveness was immaterial	Hedge ineffectiveness was immaterial for the three years ended December 31, 2011.
Fair values of derivative instruments
Notional amount of foreign currency forward contracts designated as cash flow hedges						$ 65,721	$ 33,221
Notional amount of foreign exchange forward contracts that are not designated as hedges												161,026	173,116
Notional amounts of forward contracts that are not designated as hedges (in troy ounces)																				340,000	380,000
Fair value of derivative assets		3,086	633					801	381					726	252			1,559
Fair value of derivative liabilities				$ 1,557	$ 3,007					$ 531	$ 728					$ 1,026	$ 1,228		$ 1,051