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Fair Value (Tables)
 3 Months Ended
Nov. 30, 2012
Fair Value Disclosures [Abstract]  
Financial assets and financial liabilities measured at fair value on recurring basis
The following tables summarize information regarding the Company’s financial assets and financial liabilities that were measured at fair value on a recurring basis:
 
 
 
Fair Value Measurements at Reporting Date Using
(in thousands)
November 30,
2012
 
Quoted Prices in
Active Markets  for
Identical Assets
(Level 1)
 
Significant  Other
Observable Inputs
(Level 2)
 
Significant
Unobservable  Inputs
(Level 3)
Money market investments
$
192,417

 
$
192,417

 
$
—

 
$
—

Derivative assets
2,052

 
1,467

 
585

 
—

Nonqualified benefit plan assets *
54,208

 
54,208

 
—

 
—

Derivative liabilities
2,867

 
2,051

 
816

 
—

Nonqualified benefit plan liabilities *
75,561

 
—

 
75,561

 
—

 
 
 
 
Fair Value Measurements at Reporting Date Using
(in thousands)
August 31,
2012
 
Quoted Prices in
Active Markets  for
Identical Assets
(Level 1)
 
Significant  Other
Observable  Inputs
(Level 2)
 
Significant
Unobservable  Inputs
(Level 3)
Money market investments
$
172,462

 
$
172,462

 
$
—

 
$
—

Derivative assets
1,875

 
407

 
1,468

 
—

Nonqualified benefit plan assets *
52,929

 
52,929

 
—

 
—

Derivative liabilities
3,547

 
993

 
2,554

 
—

Nonqualified benefit plan liabilities *
76,952

 
—

 
76,952

 
—

 _________________ 
*
The Company provides a nonqualified benefit restoration plan to certain eligible executives equal to amounts that would have been available under tax qualified Employee Retirement Income Security Act ("ERISA") plans but for limitations of ERISA, tax laws and regulations. Though under no obligation to fund this plan, the Company has segregated assets in a trust. The plan assets and liabilities consist of securities included in various mutual funds.