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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
3 Months Ended
Oct. 31, 2016
Oct. 31, 2015
Statement of Comprehensive Income [Abstract]    
Net income $ 462,025 $ 401,375
Unrealized (loss) on available-for-sale securities:    
Unrealized (losses) arising during the period, net of taxes (benefit) of ($23,000) and ($11,000) for the three months ended October 31, 2016 and 2015, respectively, (43,990) (19,404)
Comprehensive income $ 418,035 $ 381,971