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Interest Rate Swap Agreements (Tables)
3 Months Ended
Jun. 30, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of notional amounts of interest rate swaps
 
     Three months ended June 30,  
     2013      2012  

Notional amounts at April 1

   $ 50,000,000       $ —     

New contracts

     —           25,000,000   

Matured contracts

     —           —     
  

 

 

    

 

 

 

Notional amounts at June 30

   $ 50,000,000       $ 25,000,000   
  

 

 

    

 

 

 
 
Schedule of interest rate swap agreements effective date

Date Entered

   Effective Date    Notional Amount      Fixed Rate
Of Interest
    Maturity Date

June 1, 2012

   June 13, 2012    $ 25,000,000         1.00   June 13, 2017

July 30, 2012

   August 13, 2012    $ 25,000,000         0.87   August 14, 2017
 
Schedule of locations and amounts of losses recognized in income
 
     Three months ended June 30,  
     2013     2012  

Periodic change in fair value of interest rate swap agreements

   $ (833,259   $ 209,101   

Periodic settlement differentials included in interest expense

     93,314        15,818   

Total

   $ (739,945   $ 224,919   
 
Schedule of average variable rates received and average fixed rates paid under the swap agreements
     Three months ended
June 30,
 
     2013     2012  

Variable rate received

     0.20     0.24

Fixed rate paid

     0.94     1.00