ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
Software development royalties	$ 329,737	$ 307,953
Compensation and benefits	40,580	47,763
Licenses	39,532	23,974
Marketing and promotions	13,172	21,708
Other	44,835	43,340
Accrued expenses and other current liabilities	$ 467,856	$ 444,738