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Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Summary of Finance Receivables (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	$ 645,744	$ 628,444	$ 572,525
Branch Small [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	162,562	157,755	140,161
Convenience Checks [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	157,515	180,402	174,786
Large [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	194,857	146,553	93,203
Automobile [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	100,721	116,109	139,593
Retail [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Finance receivables	$ 30,089	$ 27,625	$ 24,782

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524

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