FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Sep. 30, 2015

FAIR VALUE MEASUREMENTS

Segregation of all assets measured at fair value on a recurring basis

	September 30, 2015			Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)			Significant unobservable inputs (level 3)		Balance Sheet Classification
Money market funds	$	503,466		$	503,466	$	—		$	—	Cash and cash equivalents
Bank-time deposits		31,971			31,971		—			—	Cash and cash equivalents
Corporate bonds		104,371			—		104,371			—	Short-term investments
Bank-time deposits		248,590			248,590		—			—	Short-term investments
Foreign currency forward contracts		(177	)		—		(177	)		—	Accrued and other current liabilities
Total recurring fair value measurements, net	$	888,221		$	784,027	$	104,194		$	—

	March 31, 2015		Quoted prices in active markets for identical assets (level 1)		Significant other observable inputs (level 2)		Significant unobservable inputs (level 3)		Balance Sheet Classification
Money market funds	$	544,334	$	544,334	$	—	$	—	Cash and cash equivalents
Bank-time deposits		79,852		79,852		—		—	Cash and cash equivalents
Corporate bonds		99,429		—		99,429		—	Short-term investments
Bank-time deposits		87,500		87,500		—		—	Short-term investments
Foreign currency forward contracts		587		—		587		—	Prepaid expenses and other
Total recurring fair value measurements, net	$	811,702	$	711,686	$	100,016	$	—