Deposits - Total Deposits (Detail) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2015	Dec. 31, 2014
Banking and Thrift [Abstract]
Percentage Change, Checking, non-interest bearing	5.40%
Percentage Change, Checking, interest bearing	1.40%
Percentage Change, Savings accounts	(3.10%)
Percentage Change, Certificates of deposit	15.00%
Percentage change, Total	0.80%
Checking, non-interest bearing	$ 257,873	$ 244,743
Checking, interest bearing	459,463	453,102
Savings accounts	941,921	972,327
Certificates of deposit	203,491	176,907
Total deposits	$ 1,862,748	$ 1,847,079

Certificate of Deposit Increase (Decrease), Percentage

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- Definition

Deposits Increase (Decrease), Percentage.

+ References

No definition available.

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- Definition

Interest Bearing Checking Deposit Increase (Decrease), Percentage.

+ References

No definition available.

+ Details

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- Definition

Non Interest Bearing Checking Deposit Increase (Decrease), Percentage.

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No definition available.

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- Definition

Saving Accounts Deposit Increase (Decrease), Percentage

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No definition available.

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- References

No definition available.

+ Details

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.12)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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- Definition

Amount of interest-bearing domestic certificate of deposit liabilities.

+ References

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- Definition

Amount of interest-bearing domestic checking deposit liabilities.

+ References

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- Definition

Amount of interest-bearing domestic savings deposit liabilities. Saving deposits bear interest and have no stated maturity.

+ References

+ Details

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- Definition

The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

+ References

+ Details

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