Securities (Details Textual) (USD $)	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Securities (Textual) [Abstract]
Maximum percentage of equity of one issuer	10.00%
Amount of issuers greater than ten percentage of equity	$ 0
Securities with aggregate par values	696,900,000		691,800,000
Proceeds from sale of available-for-sale securities, Total	42,810,000
Net unrealized security gains on the available-for-sale portfolio	11,200,000		11,300,000
Gross realized security gains	1,400,000	36,000
Gross realized Losses	0	0
Held-to-maturity, Amortized Cost	572,671,000		592,925,000
Cincinnati [Member]
Investments In Debt And Marketable Equity Securities And Certain Trading Assets [Line Items]
Federal home loan bank stock, Total			21,900,000
Pittsburgh [Member]
Investments In Debt And Marketable Equity Securities And Certain Trading Assets [Line Items]
Federal home loan bank stock, Total	$ 19,700,000

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

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The net amount of gross unrealized gains (losses) for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

+ References

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For an unclassified balance sheet, this item represents investments in debt securities which are categorized as held-to-maturity. The held-to-maturity category is for those securities that the entity has the positive intent and ability to hold until maturity.

+ References

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The carrying amount, as of the date of the latest financial statement presented, of other assets which are owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

+ References

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- Definition

The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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- Definition

The number of issuers with holdings greater than 10% of shareholders' equity other than the U.S. government and its agencies.

+ References

No definition available.

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The maximum percentage of shareholders' equity of any one issuer other than the U.S. government and its agencies.

+ References

No definition available.

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