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Finance Receivables (Details 2) (USD $)
 3 Months Ended 9 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Roll Forward]        
Balance at beginning of period     $ 35,987,868  
Current period provision 818,903 454,339 1,137,615 711,783
Balance at end of period 32,695,952   32,695,952  
Finance receivables | Direct Loans
        
Financing Receivable, Allowance for Credit Losses [Roll Forward]        
Balance at beginning of period 531,101 489,978 492,184 378,418
Current period provision 61,556 3,388 165,869 152,124
Losses absorbed (57,006) (26,150) (131,201) (77,244)
Recoveries 6,739 5,565 15,538 19,483
Balance at end of period $ 542,390 $ 472,781 $ 542,390 $ 472,781