Fair Value Measurements (Tables)

12 Months Ended

Jun. 30, 2011

The following tables summarize, by major security type, our assets that are measured at fair value on a recurring basis and are categorized using the fair value hierarchy:


	June 30, 2011
			Quoted Prices in
			Active				Significant
			Markets for		Significant Other		Unobservable
			Identical Assets		Observable Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)

Cash and cash equivalents	$	236,552	$	236,552	$	—	$	—
Auction rate security		529		—		—		529

Total assets recorded at fair value	$	237,081	$	236,552	$	—	$	529


	June 30, 2010
			Quoted Prices in
			Active				Significant
			Markets for		Significant Other		Unobservable
			Identical Assets		Observable Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)

Cash and cash equivalents	$	162,727	$	162,727	$	—	$	—
Corporate debt securities		6,745		6,745		—		—
U.S. government and agency securities		1,900		1,900		—		—
Certificates of deposit		959		959		—		—
Auction rate security		660		—		—		660

Total assets recorded at fair value	$	172,991	$	172,331	$	—	$	660

Assets measured at fair value

The following table presents a roll forward of assets measured at fair value using significant unobservable inputs (Level 3) at June 30, 2011 and 2010:


Balance at June 30, 2009	$	760
Maturities or redemptions		(100	)

Balance at June 30, 2010	$	660
Maturities or redemptions		(100	)
Reclassification of unrealized loss to net income		40
Realized loss		(71	)

Balance at June 30, 2011	$	529

- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class 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).

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- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income, and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issuances, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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