INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Components of income (loss) before income taxes
Domestic									$ 16,924	$ (62,655)	$ 29,926
Foreign									(43,036)	(41,182)	33,697
Income (loss) from continuing operations before income taxes	21,273	72,898	(11,352)	(108,931)	(66,510)	14,058	(45,842)	(5,543)	(26,112)	(103,837)	63,623
Current:
U.S. federal									3,705	(729)	3,193
U.S. state and local									456	(55)	1,521
Foreign									1,730	2,769	6,189
Total current income taxes									5,891	1,985	10,903
Deferred:
U.S. federal									(1,821)	1,712	(798)
U.S. state and local									134	126	(45)
Foreign									846	40	(241)
Total deferred income taxes									(841)	1,878	(1,084)
Provision for income taxes	$ 103	$ 2,021	$ 1,085	$ 1,841	$ (505)	$ (127)	$ 1,419	$ 3,076	$ 5,050	$ 3,863	$ 9,819
Reconciliation of effective tax rate to the U.S. statutory federal income tax rate
U.S. federal statutory rate (as a percent)									(35.00%)	(35.00%)	35.00%
Foreign tax rate differential (as a percent)									41.50%	10.60%	(8.00%)
Tax amortization of goodwill (as a percent)									7.70%	1.80%	2.80%
Foreign earnings (as a percent)									4.00%	(2.30%)	2.70%
State and local taxes, net of U.S. federal benefit (as a percent)									2.30%	0.00%	1.30%
Valuation allowance (as a percent)									(6.20%)	25.50%	(18.80%)
Other (as a percent)									5.00%	3.10%	0.40%
Effective tax rate (as a percent)									19.30%	3.70%	15.40%