Loans - Recorded Investment in Loans Related to Balance in Allowance for Possible Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	$ 8,521	$ 15,583
Loans collectively evaluated for general impairment	402,184	414,685
Total Gross Loans	410,705	430,268
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment	8,521	15,519
Loans collectively evaluated for general impairment	326,984	325,644
Total Gross Loans	335,505	341,163
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment		28
Loans collectively evaluated for general impairment	55,095	62,452
Total Gross Loans	55,095	62,480
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for specific impairment		36
Loans collectively evaluated for general impairment	20,105	26,589
Total Gross Loans	$ 20,105	$ 26,625

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.

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. 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

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