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6. Credit Facility (Tables)
9 Months Ended
Dec. 31, 2014
Debt Disclosure [Abstract]  
Summary of activity on the Bank of America, N.A. line of credit
  Principal
Balance at March 31, 2014: $    2,425,000
  Borrowings 3,475,000
  Repayments (150,000)
Balance at December 31, 2014: $     5,750,000