SEGMENT AND GEOGRAPHIC INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013 item	Jun. 30, 2012
SEGMENT AND GEOGRAPHIC INFORMATION
Number of reportable segments	1
Net revenue by geographic region:
Total net revenue	$ 142,667	$ 226,139
United States
Net revenue by geographic region:
Total net revenue	85,159	105,900
Europe
Net revenue by geographic region:
Total net revenue	40,557	82,494
Asia Pacific
Net revenue by geographic region:
Total net revenue	10,858	16,019
Canada and Latin America
Net revenue by geographic region:
Total net revenue	$ 6,093	$ 21,726