CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock and additional paid in capital	Retained earnings	Accumulated other comprehensive (loss) income
Balance, beginning of period at Aug. 31, 2021		$ 133,418	$ 32,407	$ (43)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		693
Stock-based compensation		2,016
Shares issued to Directors for services		263
Shares issued - Lixoft		1,166
Repurchase and retirement of common shares		0	0
Declaration of dividends			(3,632)
Net income	$ 11,522		11,522
Other comprehensive income (loss)				(251)
Balance, end of period at May. 31, 2022	$ 177,559	137,556	40,297	(294)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in usd per share)	$ 0.18
Balance, beginning of period at Feb. 28, 2022		135,472	37,422	(318)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		152
Stock-based compensation		679
Shares issued to Directors for services		87
Shares issued - Lixoft		1,166
Repurchase and retirement of common shares		0	0
Declaration of dividends			(1,212)
Net income	$ 4,087		4,087
Other comprehensive income (loss)				24
Balance, end of period at May. 31, 2022	$ 177,559	137,556	40,297	(294)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in usd per share)	$ 0.06
Balance, beginning of period at Aug. 31, 2022	$ 178,248	138,512	40,044	(308)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		1,535
Stock-based compensation		3,169
Shares issued to Directors for services		450
Shares issued - Lixoft		0
Repurchase and retirement of common shares		0	(20,000)
Declaration of dividends			(3,613)
Net income	9,427		9,427
Other comprehensive income (loss)				174
Balance, end of period at May. 31, 2023	$ 169,390	143,666	25,858	(134)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in usd per share)	$ 0.18
Balance, beginning of period at Feb. 28, 2023		137,821	27,050	(278)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		572
Stock-based compensation		1,123
Shares issued to Directors for services		150
Shares issued - Lixoft		0
Repurchase and retirement of common shares		4,000	(4,000)
Declaration of dividends			(1,200)
Net income	$ 4,008		4,008
Other comprehensive income (loss)				144
Balance, end of period at May. 31, 2023	$ 169,390	$ 143,666	$ 25,858	$ (134)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in usd per share)	$ 0.06