STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)	Common Stock	Additional Paid-In Capital	Retained Earnings	Total
Beginning balance, shares at Aug. 31, 2014	16,349,955
Beginning balance, value at Aug. 31, 2014	$ 4,821	$ 6,085,427	$ 9,345,103	$ 15,435,351
Exercise of stock options, shares	101,887
Exercise of stock options, amount	$ 102	56,941		57,043
Stock-based compensation		295,243		295,243
Issuance of stock - acquisition, shares	491,159
Issuance of stock - acquisition, value	$ 491	3,276,679		3,277,170
Declaration of dividends			(3,375,566)	(3,375,566)
Net income			3,842,961	3,842,961
Ending balance, shares at Aug. 31, 2015	16,943,001
Ending balance, value at Aug. 31, 2015	$ 5,414	9,714,290	9,812,498	19,532,202
Exercise of stock options, shares	112,463
Exercise of stock options, amount	$ 113	181,936		182,049
Stock-based compensation		347,077		347,077
Issuance of stock - acquisition, shares	170,014
Issuance of stock - acquisition, value	$ 1,700	1,132,704		1,134,404
Declaration of dividends			(3,413,274)	(3,413,274)
Net income			4,950,136	4,950,136
Ending balance, shares at Aug. 31, 2016	17,225,478
Ending balance, value at Aug. 31, 2016	$ 7,227	11,376,007	11,349,360	22,732,594
Exercise of stock options, shares	49,642
Exercise of stock options, amount	$ 49	111,355		111,404
Stock-based compensation		585,018		585,018
Issuance of stock - acquisition, shares	2,484
Issuance of stock - acquisition, value	$ 2	36,761		36,763
Declaration of dividends			(3,448,489)	(3,448,489)
Net income			5,787,597	5,787,597
Ending balance, shares at Aug. 31, 2017	17,277,604
Ending balance, value at Aug. 31, 2017	$ 7,278	$ 12,109,141	$ 13,688,468	$ 25,804,887