CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Common Stock And Additional Paid In Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance, beginning of period at Aug. 31, 2019	$ 15,327	$ 22,355
Exercise of stock options	303
Stock-based compensation	640
Shares issued to Directors for services	144
Declaration of dividend		(2,115)
Net income		4,208		4,208
Other comprehensive income
Balance, end of period at Feb. 29, 2020	16,414	24,448		$ 40,862
Common dividends declared per common share				$ 0.12
Balance, beginning of period at Nov. 30, 2019	15,830	23,357
Exercise of stock options	167
Stock-based compensation	345
Shares issued to Directors for services	72
Declaration of dividend		(1,059)
Net income		2,150		2,150
Other comprehensive income
Balance, end of period at Feb. 29, 2020	16,414	24,448		$ 40,862
Common dividends declared per common share				$ 0.06
Balance, beginning of period at Aug. 31, 2020	128,541	27,436	58	$ 156,035
Exercise of stock options	836
Stock-based compensation	1,166
Shares issued to Directors for services	170
Declaration of dividend		(2,396)
Net income		5,690		5,690
Other comprehensive income			(4)
Balance, end of period at Feb. 28, 2021	130,713	30,730	54	$ 161,497
Common dividends declared per common share				$ 0.12
Balance, beginning of period at Nov. 30, 2020	129,253	28,720	58
Exercise of stock options	656
Stock-based compensation	717
Shares issued to Directors for services	87
Declaration of dividend		(1,201)
Net income		3,211		3,211
Other comprehensive income			(4)
Balance, end of period at Feb. 28, 2021	$ 130,713	$ 30,730	$ 54	$ 161,497
Common dividends declared per common share				$ 0.06