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Fair Value Disclosures (Detail Textuals)	9 Months Ended
	Dec. 31, 2017
Contracts | Minimum
Financial Instruments Not Measured At Fair Value [Line Items]
Initial term of finance receivables	12 months
Contracts | Maximum
Financial Instruments Not Measured At Fair Value [Line Items]
Initial term of finance receivables	72 months
Direct Loans | Minimum
Financial Instruments Not Measured At Fair Value [Line Items]
Initial term of finance receivables	12 months
Direct Loans | Maximum
Financial Instruments Not Measured At Fair Value [Line Items]
Initial term of finance receivables	72 months

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