ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			$ (32,169,000)
Net current period other comprehensive (loss) income	12,589,000	(37,915,000)	(810,000)	(6,106,000)
Other comprehensive (loss) income, net of tax			(519,000)
Ending balance	(32,187,000)		(32,187,000)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(32,024,000)		(25,073,000)
Other comprehensive (loss) income before reclassifications	(5,278,000)		(12,229,000)
Amounts reclassified from accumulated other comprehensive loss	0		0
Net current period other comprehensive (loss) income	(5,278,000)		(12,229,000)
Ending balance	(37,302,000)		(37,302,000)
Unrealized (Losses) Gains On Available-For-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(12,072,000)		(7,096,000)
Other comprehensive (loss) income before reclassifications	17,187,000		12,212,000
Amounts reclassified from accumulated other comprehensive loss	0		(1,000)
Net current period other comprehensive (loss) income	17,187,000		12,211,000
Ending balance	5,115,000		5,115,000
Unrealized (Losses) Gains On Available-For-Sale Securities | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other	100,000		700,000
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(44,096,000)		(32,169,000)
Other comprehensive (loss) income before reclassifications	11,909,000		(17,000)
Amounts reclassified from accumulated other comprehensive loss	0		(1,000)
Other comprehensive (loss) income, net of tax	11,909,000		(18,000)
Ending balance	$ (32,187,000)		$ (32,187,000)