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Interest Rate Swap Agreements (Tables)
12 Months Ended
Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of locations and amounts of losses recognized in income
 
     (In thousands)  
     2016      2015  

Periodic change in fair value of interest rate swap agreements

   $ (24    $ (364

Periodic settlement differentials included in interest expense

     (343      (393
  

 

 

    

 

 

 

Loss recognized in income

   $ (367    $ (757
  

 

 

    

 

 

 
Schedule of variable rates received and average fixed rates paid under the swap agreements
 
     2016     2015  

Average variable rate received

     0.26     0.16

Average fixed rate paid

     0.94     0.94