SCHEDULE ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cumulative translation adjustment of foreign currency statements	$ 32,702	$ 50,966	$ 26,430
Unrealized Gain (Loss) on Long-Term Investment (Net of Deferred Taxes of $155, ($50) and ($109), respectively)	(348)	459	1,010
Accumulated Other Comprehensive Income Long Term Investments, Tax	155	(50)	(109)
Unfunded Pension Liability (Net of Deferred Taxes of $283, $225 and $201, Respectively)	(1,001)	(666)	(611)
Unfunded Pension Liability Deferred Taxes	283	225	201
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax	58	24	254
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 31,353	$ 50,759	$ 26,829