v2.4.0.6

Fair Value of Financial Assets and Liabilities (Tables)

6 Months Ended

Oct. 31, 2012

Fair Value of Financial Assets and Liabilities [Abstract]

Summary of cash and cash equivalents

(in thousands)		October 31, 2012				April 30, 2012
Demand deposit accounts		$	41,427			$	45,361
Money market funds			3,689				288
U.S. Treasury bills			—				7,499
Corporate bonds (U.S. Gov. guaranteed)			—				21,219
Total cash and cash equivalents		$	45,116			$	74,367

Summary of short-term investments

(in thousands)		Cost				Gross Unrealized Losses				Fair Value
Available-for-sale securities:
Certificates of deposit (U.S. Gov. guaranteed)		$	10,226			$	(8	)		$	10,218
Corporate bonds			23,395				(9	)			23,386
U.S. Treasury notes			62,814				(10	)			62,804
Total short-term investments		$	96,435			$	(27	)		$	96,408

The following table summarizes the Company’s short-term investments as of April 30, 2012:

		Year Ended April 30, 2012
		Gross Unrealized
(in thousands)		Cost				Gains (Losses)				Fair Value
Available-for-sale securities:
Certificates of deposit (U.S. Gov. guaranteed)		$	4,510			$	(14	)		$	4,496
U.S. Treasury notes			28,126				(28	)			28,099
Corporate bonds			18,245				(5	)			18,239
Total short-term investments		$	50,881			$	(47	)		$	50,834

Summary of fair value of financial assets and liabilities

		Fair Value Measurements at October 31, 2012																Fair Value Measurements at April 30, 2012
(in thousands)		Level 1				Level 2				Level 3				Total				Level 1				Level 2				Level 3				Total
Assets:
Cash equivalents:
Money market funds		$	3,689			$	—			$	—			$	3,689			$	288			$	—			$	—			$	288
U.S. Treasury bills			—				—				—				—				7,499				—				—				7,499
Corporate bonds (U.S. Gov. guaranteed)			—				—				—				—				21,219				—				—				21,219
Total cash equivalents			3,689				—				—				3,689				29,006				—				—				29,006
Restricted cash			604				—				—				604				500				—				—				500
Short-term investments:
Certificates of deposit (U.S. Gov. guaranteed)			10,218				—				—				10,218				4,496				—				—				4,496
Corporate bonds			23,386				—				—				23,386				18,239				—				—				18,239
U.S. Treasury notes			62,804				—				—				62,804				28,099				—				—				28,099
Total short-term investments			96,408				—				—				96,408				50,834				—				—				50,834
Total assets		$	100,701			$	—			$	—			$	100,701			$	80,340			$	—			$	—			$	80,340

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- Definition

Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

+ References

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Tabular disclosure of the components of cash and cash equivalents.

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- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258

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