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Investment Securities (Tables)
9 Months Ended
Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-Sale Securities
       Gross   Gross     
   Amortized   Unrealized   Unrealized   Fair 
   Cost   Gains   Losses   Value 
March 31, 2019                    
Certificates of deposit  $5,193,627   $   $   $5,193,627 
Municipal bonds   639,930    668    (949)   639,649 
Total investment securities  $5,833,557   $668   $(949)  $5,833,276 
June 30, 2018                    
Certificates of deposit  $10,440,000   $   $   $10,440,000 
Municipal bonds   1,085,754    635    (5,683)   1,080,706 
Total investment securities  $11,525,754   $635   $(5,683)  $11,520,706 
Schedule of Contractual Maturities
   Years to Maturity     
   Less than   One to     
   One Year   Five Years   Total 
March 31, 2019               
Available-for-sale  $5,698,497   $134,779   $5,833,276 
                
June 30, 2018               
Available-for-sale  $10,967,300   $553,406   $11,520,706