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Interest Rate Swap Agreements (Tables)
 6 Months Ended
Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of notional amounts of interest rate swaps

 

     Six months ended September 30,  
     2014      2013  

Notional amounts at April 1

    $ 50,000,000       $ 50,000,000   

New contracts

      —           —     

Matured contracts

      —           —     
  

 

 

     

 

 

  

Notional amounts at September 30

    $ 50,000,000       $ 50,000,000
Schedule of locations and amounts of (gains) losses recognized in income

 

     Three months ended
September 30,		      Six months ended
September 30,		  
     2014     2013      2014     2013  

Periodic change in fair value of interest rate swap agreements

    $ (251,408 )    $ 249,616       $ (39,121 )    $ (583,643 ) 

Periodic settlement differentials included in interest expense

      99,846        95,725         198,838        189,039   
  

 

 

    

 

 

     

 

 

    

 

 

  

Total

    $ (151,562)      $  345,341       $  159,717      $ (394,604 ) 
Schedule of variable rates received and average fixed rates paid under the swap agreements

 

     Three months ended
September 30,		     Six months ended
September 30,		  
     2014     2013     2014     2013  

Variable rate received

      0.15 %      0.19 %      0.15 %      0.19 % 

Fixed rate paid

      0.94 %      0.94 %      0.94 %      0.94 %