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Fair Value of Financial Instruments and Investments (Tables)
6 Months Ended
Dec. 31, 2015
Fair Value of Financial Instruments and Investments [Abstract]  
Schedule of cost, gross unrealized gains, gross unrealized losses and fair value of available-for-sale securities by major security type
Gross     Gross        
Amortized Unrealized     Unrealized     Fair  
Cost Gains     Losses     Value  
December 31, 2015                        
Certificates of deposit   $ 4,405,000     $     $     $ 4,405,000  
Municipal bonds     824,772       1,198       (6,600 )     819,370  
Total investment securities   $ 5,229,772     $ 1,198     $ (6,600 )   $ 5,224,370  
                                 
June 30, 2015                                
Certificates of deposit   $ 3,272,000     $     $     $ 3,272,000  
Municipal bonds     893,804       1,288       (8,035 )     887,057  
Total investment securities   $ 4,165,804     $ 1,288     $ (8,035 )   $ 4,159,057  
Schedule of contractual maturities of available-for-sale securities
Years to Maturity    
    Less than     One to        
One Year Five Years     Total  
December 31, 2015                
Available-for-sale   $ 4,979,370     $ 245,000     $ 5,224,370  
                         
June 30, 2015                        
Available-for-sale   $ 3,522,728     $ 636,329     $ 4,159,057