Finance Receivables (Details 4) (USD $)	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2012 Finance receivables Consumer Loan	Jun. 30, 2011 Finance receivables Consumer Loan	Jun. 30, 2012 Finance receivables Contracts	Jun. 30, 2011 Finance receivables Contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables, gross	$ 392,707,600	$ 388,988,355	$ 7,095,917	$ 5,151,901	$ 385,611,683	$ 375,073,481
Delinquencies 31 to 60 days			78,044	53,069	12,745,275	9,690,976
Delinquencies 61 to 90 days			19,390	17,219	3,216,955	2,286,127
Delinquencies Over 90 days			4,226	92	804,930	607,566
Delinquencies Total			$ 101,660	$ 70,380	$ 16,767,160	$ 12,584,669
Finance Receivables 30 To 59 Days Past Due Delinquency Rate			1.10%	1.03%	3.31%	2.59%
Finance Receivables 60 To 89 Days Past Due Delinquency Rate			0.27%	0.33%	0.83%	0.60%
Finance Receivables Equal To Greater Than 90 Days Past Due Delinquency Rate			0.06%	0.00%	0.21%	0.16%
Financing Receivable Delinquency Rate Recorded Investment Past Due			1.43%	1.36%	4.35%	3.35%