Fair Value Measurements (Tables)

3 Months Ended

Jun. 30, 2016

Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

Assets measured at fair value on a recurring basis at June 30, 2016 are as follows (amounts in thousands):

	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Balance
Assets
Cash and cash equivalents:
Money market mutual funds	$	147,618	$	—	$	—	$	147,618
Deposit accounts	—		452,908		—		452,908
Short-term investments:
Marketable equity securities	1,266		—		—		1,266
Total assets measured at fair value	$	148,884	$	452,908	$	—	$	601,792

Assets measured at fair value on a recurring basis at March 31, 2016 are as follows (amounts in thousands):

	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Balance
Assets
Cash and cash equivalents:
Money market mutual funds	$	1,787,446	$	—	$	—	$	1,787,446
Deposit accounts	—		305,305		—		305,305
Short-term investments:
Marketable equity securities	2,203		—		—		2,203
Corporate bonds and debt	—		1,000		—		1,000
Government agency bonds	—		350,081		—		350,081
Long-term investments:
Government agency bonds	—		118,549		—		118,549
Total assets measured at fair value	$	1,789,649	$	774,935	$	—	$	2,564,584