SEGMENT AND GEOGRAPHIC INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012 item	Jun. 30, 2011
SEGMENT AND GEOGRAPHIC INFORMATION
Number of reportable segments	1
Net revenue by geographic region:
Total net revenue	$ 226,139	$ 334,380
United States
Net revenue by geographic region:
Total net revenue	105,900	152,042
Europe
Net revenue by geographic region:
Total net revenue	82,494	127,996
Canada and Latin America
Net revenue by geographic region:
Total net revenue	21,726	29,714
Asia Pacific
Net revenue by geographic region:
Total net revenue	$ 16,019	$ 24,628