SEGMENT AND GEOGRAPHIC INFORMATION - Total Revenue by Geography (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total revenue	$ 110,428	$ 91,567	$ 284,330	$ 252,473
United States
Segment Reporting Information [Line Items]
Total revenue	86,747	66,990	216,364	188,701
Europe
Segment Reporting Information [Line Items]
Total revenue	12,313	12,940	33,906	31,373
Asia
Segment Reporting Information [Line Items]
Total revenue	4,035	4,201	14,788	12,678
Rest of the world
Segment Reporting Information [Line Items]
Total revenue	$ 7,333	$ 7,436	$ 19,272	$ 19,721