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.

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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Balance Type:	na
Period Type:	duration

- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953682-111524

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Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Additional Information (Detail)	3 Months Ended
- Additional Information (Detail)	Mar. 31, 2017 USD ($) SecurityLoan	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Financing Receivable Modifications [Line Items]
Number of Loans under troubled debt restructurings	18
Recorded investment or loans under troubled debt restructurings \| $	$ 2,400,000		$ 2,400,000
Loans modified under troubled debt restructurings during previous twelve month period that subsequently defaulted \| $	$ 0	$ 0
Troubled Debt Restructuring, Adjustments to Maturity [Member]
Financing Receivable Modifications [Line Items]
Number of Loans under troubled debt restructurings	8
Troubled Debt Restructuring, Reduction in Interest Rate [Member]
Financing Receivable Modifications [Line Items]
Number of Loans under troubled debt restructurings	9
Nonaccrual [Member]
Financing Receivable Modifications [Line Items]
Number of Loans under troubled debt restructurings	1