Fair Value Measurements (Schedule of Financial Assets and Liabilities Measured at Fair Value) (Details) - USD ($) $ in Thousands	May 31, 2022	Aug. 31, 2021	May 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 81,757	$ 127,107	$ 120,801
Marketable securities:
Derivative assets	1,080
Earn-out liability		(250)	(1,098)
Corporate Bonds [Member]
Marketable securities:
Marketable securities	10,754	15,484	15,114
U.S. Treasury Securities [Member]
Marketable securities:
Marketable securities	3,176	4,120	4,549
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	81,757	127,107	120,801
Marketable securities:
Derivative assets	0
Earn-out liability		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	1,080
Earn-out liability		0	0
Level 2 [Member] | Corporate Bonds [Member]
Marketable securities:
Marketable securities	10,754	15,484	15,114
Level 2 [Member] | U.S. Treasury Securities [Member]
Marketable securities:
Marketable securities	3,176	4,120	4,549
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
Earn-out liability		(250)	(1,098)
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