Fair Value of Financial Instruments (Tables)

12 Months Ended

Apr. 30, 2015

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table presents our assets that we measured at fair value on a recurring basis and indicates the fair value hierarchy of the valuation techniques we utilized to determine such fair value (in thousands):

	April 30, 2015								April 30, 2014
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Cash equivalents	$	42,951	$	—	$	—	$	42,951	$	51,561	$	—	$	—	$	51,561
Marketable securities		9,139		21,555		—		30,694		8,338		15,167		—		23,505
Total	$	52,090	$	21,555	$	—	$	73,645	$	59,899	$	15,167	$	—	$	75,066