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5. Credit Facility (Tables)
12 Months Ended
Mar. 31, 2015
Debt Disclosure [Abstract]  
Summary of activity on the Bank of America, N.A. line of credit

    Principal  
Balance at April 1, 2014:   $ 2,425,000  
Borrowings     3,675,000  
Repayments     (150,000 )
Balance at March 31, 2015:   $ 5,950,000