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, 2022		$ 138,512	$ 40,044	$ (308)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		963
Stock-based compensation		2,046
Shares issued to Directors for services		300
Repurchase and retirement of common shares		(4,000)	(16,000)
Declaration of dividends			(2,413)
Net income	$ 5,419		5,419
Other comprehensive (loss) income				30
Balance, end of period at Feb. 28, 2023	$ 164,593	137,821	27,050	(278)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in usd per share)	$ 0.12
Balance, beginning of period at Nov. 30, 2022		140,306	40,071	(255)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		205
Stock-based compensation		1,160
Shares issued to Directors for services		150
Repurchase and retirement of common shares		(4,000)	(16,000)
Declaration of dividends			(1,195)
Net income	$ 4,174		4,174
Other comprehensive (loss) income				(23)
Balance, end of period at Feb. 28, 2023	$ 164,593	137,821	27,050	(278)
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, 2023	$ 170,029	144,974	25,196	(141)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		310
Stock-based compensation		2,888
Shares issued to Directors for services		300
Repurchase and retirement of common shares		0	0
Declaration of dividends			(2,394)
Net income	5,974		5,974
Other comprehensive (loss) income				(69)
Balance, end of period at Feb. 29, 2024	$ 177,038	148,472	28,776	(210)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in usd per share)	$ 0.12
Balance, beginning of period at Nov. 30, 2023		146,591	25,945	(195)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		146
Stock-based compensation		1,585
Shares issued to Directors for services		150
Repurchase and retirement of common shares		0	0
Declaration of dividends			(1,198)
Net income	$ 4,029		4,029
Other comprehensive (loss) income				(15)
Balance, end of period at Feb. 29, 2024	$ 177,038	$ 148,472	$ 28,776	$ (210)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per common share (in usd per share)	$ 0.06