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Fair Value Measurements (Schedule of Financial Assets and Liabilities Measured at Fair Value) (Details) - USD ($)
$ in Thousands
Nov. 30, 2022
Aug. 31, 2022
Nov. 30, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents $ 99,168 $ 105,048 $ 84,719
Marketable securities:      
Derivative assets 3,455 5,505  
Corporate Bonds [Member]      
Marketable securities:      
Marketable securities 9,646 9,668 26,503
U.S. Treasury Securities [Member]      
Marketable securities:      
Marketable securities 1,778 1,792 3,692
Level 1 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 99,168 105,048 84,719
Marketable securities:      
Derivative assets 0 0  
Level 1 [Member] | Corporate Bonds [Member]      
Marketable securities:      
Marketable securities 0 0 0
Level 1 [Member] | U.S. Treasury Securities [Member]      
Marketable securities:      
Marketable securities 0 0 0
Level 2 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 0 0 0
Marketable securities:      
Derivative assets 3,455 5,505  
Level 2 [Member] | Corporate Bonds [Member]      
Marketable securities:      
Marketable securities 9,646 9,668 26,503
Level 2 [Member] | U.S. Treasury Securities [Member]      
Marketable securities:      
Marketable securities 1,778 1,792 3,692
Level 3 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Cash and cash equivalents 0 0 0
Marketable securities:      
Derivative assets 0 0  
Level 3 [Member] | Corporate Bonds [Member]      
Marketable securities:      
Marketable securities 0 0 0
Level 3 [Member] | U.S. Treasury Securities [Member]      
Marketable securities:      
Marketable securities $ 0 $ 0 $ 0