Fair Value Measurements (Schedule of Financial Assets and Liabilities Measured at Fair Value) (Details) - USD ($) $ in Thousands	Feb. 28, 2023	Aug. 31, 2022	Feb. 28, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 97,675	$ 105,048	$ 68,951
Marketable securities:
Derivative assets	3,520	5,505
Corporate Bonds [Member]
Marketable securities:
Marketable securities	6,976	9,668	20,322
U.S. Treasury Securities [Member]
Marketable securities:
Marketable securities	1,787	1,792	4,612
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	97,675	105,048	68,951
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	3,520	5,505
Level 2 [Member] | Corporate Bonds [Member]
Marketable securities:
Marketable securities	6,976	9,668	20,322
Level 2 [Member] | U.S. Treasury Securities [Member]
Marketable securities:
Marketable securities	1,787	1,792	4,612
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