CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 655,935	$ 318,172	$ 870,701	$ 3,167,496
Unrealized gain (loss) on available-for-sale securities:
Unrealized gains (losses) arising during the period, net of taxes (benefit) of ($27,037) for the three months ended April 30, 2018 and $43,963 for the nine months ended April 30, 2018		(117,213)		57,969
Reclassification adjustment for net gains included in net income, net of taxes of $7,770 for the three months ended April 30, 2018 and $7,963 for the nine months ended April 30, 2018		(17,630)		(15,457)
Unrealized gain (losses) on available-for-sale securities, net of taxes		(134,843)		42,512
Comprehensive income	$ 655,935	$ 183,329	$ 870,701	$ 3,210,008