Borrowed Funds - Advances from FHLB of Pittsburgh with Rates (Detail) (Federal Home Loan Bank of Pittsburgh [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Federal Home Loan Bank of Pittsburgh [Member]
Assets Sold under Agreements to Repurchase [Line Items]
2014	$ 615,925
2015	22,166
Advances from FHLB of Pittsburgh, Amount	$ 638,091
2014	0.29%
2015	0.58%
Advances from FHLB of Pittsburgh	0.30%

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

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- Definition

The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due within one year of the Balance Sheet date.

+ References

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

-Publisher SEC

-Name Industry Guide

-Number 3

-Section VII.3

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- Definition

The weighted average interest rate applicable to the Federal Home Loan Bank advances which are due from one to two years of the Balance Sheet date.

+ 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 210.9-03.13(3)(a))

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

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- Definition

Amount of federal home loan bank advances maturing in the next rolling twelve months following the latest balance sheet presented.

+ References

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Amount of federal home loan bank advances maturing in the second rolling twelve months following the latest balance sheet presented.

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- Definition

Federal Home Loan Bank Advances Maturities Summary Average Interest Rate

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