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9. Cancellation of Capital Stock (Details) - USD ($)	3 Months Ended
	Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018
Details
Shares repurchased and cancelled	46,408	195,142	8,450	95,671	154,329
Payments for Repurchase of Common Stock	$ 399,593	$ 1,704,543	$ 63,929	$ 893,376	$ 1,271,599
Average price per share repurchased and cancelled	$ 8.61	$ 8.73	$ 7.57	$ 9.34	$ 8.24
Decrease to retained earnings	$ 388,645	$ 1,658,509	$ 61,936	$ 870,805	$ 1,235,191
Shares repurchased and cancelled	46,408	195,142	8,450	95,671	154,329

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The cash outflow to reacquire common stock during the period.

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Number of shares that have been repurchased and retired during the period.

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