Fair Value Measurements (Tables)

6 Months Ended

Sep. 30, 2015

Assets measured at fair value on a recurring basis at September 30, 2015 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	$	217,281	$	—	$	—	$	217,281
Deposit accounts	—		321,797		—		321,797
Short-term investments:
Corporate bonds and debt	—		737,194		—		737,194
Government agency bonds	—		717,419		—		717,419
Municipal bonds	—		7,853		—		7,853
Long-term investments:
Corporate bonds and debt	—		383,899		6,190		390,089
Government agency bonds	—		150,775		—		150,775
Municipal bonds	—		34,221		—		34,221
Auction rate securities	—		—		9,825		9,825
Derivative assets	—		10,963		—		10,963
Total assets measured at fair value	$	217,281	$	2,364,121	$	16,015	$	2,597,417

Assets measured at fair value on a recurring basis at March 31, 2015 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	$	279,833	$	—	$	—	$	279,833
Deposit accounts	—		327,982		—		327,982
Short-term investments:
Marketable equity securities	13,166		—		—		13,166
Corporate bonds and debt	—		756,664		—		756,664
Time deposits ⁽¹⁾	—		506		—		506
Government agency bonds	—		549,737		—		549,737
Municipal bonds	—		30,981		—		30,981
Long-term investments:
Corporate bonds and debt	—		164,075		6,190		170,265
Government agency bonds	—		192,519		—		192,519
Municipal bonds	—		10,717		—		10,717
Auction rate securities	—		—		9,825		9,825
Derivative assets	—		8,928		—		8,928
Total assets measured at fair value	$	292,999	$	2,042,109	$	16,015	$	2,351,123