ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Components of accumulated other comprehensive income
Balance at the beginning of the period	$ (279,616)	$ 98,836	$ 43,574
Foreign currency translation adjustment	161,011	(381,633)	54,640
Reclassification to net income (loss)	(1,437)
Acquisition of noncontrolling interest		2,206
Pension adjustment	259	(545)
Balance at the end of the period	(119,396)	(279,616)	98,836
Available-for-sale equity securities
Components of accumulated other comprehensive income
Balance at the beginning of the period	1,634
Reclassification to net income (loss)	(1,634)	(21,146)
Net unrealized holding gain (loss) on securities	379	22,780
Balance at the end of the period	379	1,634
Available-for-sale debt securities
Components of accumulated other comprehensive income
Net unrealized holding gain (loss) on securities	7	(114)	(321)
Auction rate securities
Components of accumulated other comprehensive income
Reclassification to net income (loss)			389
Net unrealized holding gain (loss) on securities	1		554
Foreign Currency Translation Adjustment
Components of accumulated other comprehensive income
Balance at the beginning of the period	(282,707)	98,926	44,286
Foreign currency translation adjustment	161,011	(381,633)	54,640
Balance at the end of the period	(121,696)	(282,707)	98,926
Net Unrealized Holding Gain (Loss) on Securities | Available-for-sale equity securities
Components of accumulated other comprehensive income
Balance at the beginning of the period	1,634
Reclassification to net income (loss)	(1,634)	(21,146)
Net unrealized holding gain (loss) on securities	379	22,780
Balance at the end of the period	379	1,634
Net Unrealized Holding Gain (Loss) on Securities | Available-for-sale debt securities
Components of accumulated other comprehensive income
Balance at the beginning of the period	(204)	(90)	231
Reclassification to net income (loss)	197
Net unrealized holding gain (loss) on securities	7	(114)	(321)
Balance at the end of the period		(204)	(90)
Net Unrealized Holding Gain (Loss) on Securities | Auction rate securities
Components of accumulated other comprehensive income
Balance at the beginning of the period			(943)
Reclassification to net income (loss)			389
Net unrealized holding gain (loss) on securities	1		554
Acquisition of noncontrolling interest
Components of accumulated other comprehensive income
Acquisition of noncontrolling interest		2,206
Balance at the end of the period	2,206	2,206
Pension Adjustment
Components of accumulated other comprehensive income
Balance at the beginning of the period	(545)
Pension adjustment	259	(545)
Balance at the end of the period	$ (286)	$ (545)