Number of securities in an unrealized loss position.

No definition available.

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- Definition

Percentage of combined depreciation of the combined reported value of the aggregate securities portfolio.

+ References

No definition available.

+ Details

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- Definition

The fair value of available-for-sale securities that serve as collateral for borrowings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5086-111524

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- Definition

Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity that have been in a continuous loss position for twelve months or longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 6

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

+ Details

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- Definition

Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity that have been in a continuous loss position for less than twelve months.

+ References

+ Details

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- Definition

The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 8B

-URI http://asc.fasb.org/extlink&oid=27724398&loc=SL6284393-111563

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- 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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Investment Securities - Additional Information (Detail)	3 Months Ended		9 Months Ended
Investment Securities - Additional Information (Detail)	Sep. 30, 2015 USD ($) Securities	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) Securities	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($) Securities
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity securities in continuous unrealized loss position, less than 12 Months	$ 0		$ 0		$ 88,000
Held-to-maturity securities in continuous unrealized loss position, 12 Months or Longer	$ 0		$ 0		$ 0
Number of securities in an unrealized loss position \| Securities	108		108		97
Percentage of combined depreciation of the combined reported value of the aggregate securities portfolio	1.88%		1.88%		3.21%
OTTI charges incurred		$ 219,000		$ 737,000
Carrying value of available-for-sale securities as security for various purposes	$ 243,750,000		$ 243,750,000		$ 268,780,000
Debt Securities
Schedule of Available-for-sale Securities [Line Items]
OTTI charges incurred	0	0	0	0
Non Agency Mortgage Backed Securities
Schedule of Available-for-sale Securities [Line Items]
OTTI charges incurred	0	219,000	0	705,000
Equity Securities
Schedule of Available-for-sale Securities [Line Items]
OTTI charges incurred	$ 0	$ 0	$ 0	$ 32,000