SEGMENT AND GEOGRAPHIC INFORMATION (Details 3) (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
Net revenue by distribution channel:
Net revenue	$ 299,487	$ 415,773	$ 273,084	$ 226,139	$ 148,084	$ 236,325	$ 107,034	$ 334,380	$ 1,214,483	$ 825,823	$ 1,136,876
Physical retail and other
Net revenue by distribution channel:
Net revenue									958,355	719,179	1,035,171
Digital online
Net revenue by distribution channel:
Net revenue									$ 256,128	$ 106,644	$ 101,705