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Interest Rate Swap Agreements - Summary of locations and amounts of gains (losses) in income (Details 1) (USD $)
12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Periodic change in fair value of interest rate swap agreements $ 688,455 $ (504,852)
Periodic settlement differentials included in interest expense (383,028) (277,364)
Loss recognized in income $ 305,427 $ (782,216)