Basis of Presentation - Summary of change to consolidated balance sheet (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2012
Consolidated Balance Sheet
Finance receivables, net	$ 260,494,081	$ 249,825,801	$ 248,013,051
Deferred income taxes	7,211,508	8,426,961	8,494,595
Retained earnings	104,099,467	96,933,548	114,745,550
Reported
Consolidated Balance Sheet
Finance receivables, net			249,072,304
Deferred income taxes			8,089,112
Retained earnings			115,399,320
Correction
Consolidated Balance Sheet
Finance receivables, net			(1,059,253)
Deferred income taxes			405,483
Retained earnings			$ (653,770)

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b),(c)

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.3)

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 31

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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