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Investments And Fair Value Measurements (Tables)

12 Months Ended

Jul. 31, 2011

Investments And Fair Value Measurements

Financial Assets Measured At Fair Value On Recurring Basis

July 31, 2011

July 31, 2010

Cash and Cash Equivalents

Auction Rate Securities

Cash and Cash    Equivalents

Auction Rate Securities       and Put Rights

Levels of Input

Level 1

$    215,435

$              –

$    247,751

$                –

Level 2

–

–

–

–

Level 3

–

2,042

–

5,327

$    215,435

$       2,042

$    247,751

$        5,327

Assets Measured At Fair Value Using Significant Unobservable Inputs

		2011				2010
Balances at beginning of year		$	5,327			$	120,578
Net change in other comprehensive income			415				599
Net loss included in earnings			–				–
Purchases			–				–
Sales/Maturities			(3,700)				(115,850)
Balances at end of year		$	2,042			$	5,327

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 157
-Paragraph 32
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19279-110258

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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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
-Topic 820
-SubTopic 10
-Publisher FASB
-Number
-Article
-Subparagraph
-Name Accounting Standards Codification
-Paragraph 1
-Section 50
-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19190-110258

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