Finance Receivables (Details 2) (USD $)	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	$ 35,987,868
Current period provision	10,372	79,415
Balance at end of period	36,207,458
Finance receivables | Consumer Loan
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	492,184	378,418
Current period provision	89,590	80,223
Losses absorbed	(25,092)	(18,446)
Recoveries	5,121	7,076
Balance at end of period	$ 561,803	$ 447,271