SEGMENT AND GEOGRAPHIC INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014 item	Mar. 31, 2013	Mar. 31, 2012
SEGMENT AND GEOGRAPHIC INFORMATION
Number of reportable segments									1
Net revenue by geographic region:
Total net revenue	$ 195,208	$ 1,863,869	$ 148,824	$ 142,667	$ 299,487	$ 415,773	$ 273,084	$ 226,139	$ 2,350,568	$ 1,214,483	$ 825,823
United States
Net revenue by geographic region:
Total net revenue									1,093,918	710,488	449,189
Europe
Net revenue by geographic region:
Total net revenue									903,610	328,003	246,260
Canada and Latin America
Net revenue by geographic region:
Total net revenue									178,816	88,427	61,773
Asia Pacific
Net revenue by geographic region:
Total net revenue									$ 174,224	$ 87,565	$ 68,601