CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 222,726	$ 328,913	$ 624,101	$ 767,585
Unrealized gain (loss) on available-for-sale securities:
Unrealized holding gains (losses) arising during the period, net of taxes (benefit) of ($17,000) and ($10,000) for the three months ended January 31, 2016 and 2015, respectively, and ($28,000) and $23,000 for the six months ended January 31, 2016 and 2015, respectively.	(34,050)	(12,823)	(53,454)	29,339
Comprehensive income	$ 188,676	$ 316,090	$ 570,647	$ 796,924