Investment in Affordable Housing Projects (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015 Partnership	Mar. 31, 2014
Investment in Affordable Housing Projects [Abstract]
Number of limited liability partnerships with investments	6
Year in which investments are expected to be paid	2032
Tax credits and other benefits recognized	$ 193	$ 124
Losses from investments in affordable housing projects	279	180
Other Assets [Member]
Investment in Affordable Housing Projects [Abstract]
Investments in affordable housing projects	4,459
Other Liabilities [Member]
Investment in Affordable Housing Projects [Abstract]
Capital call for investments in affordable housing projects	$ 3,501

Amount of affordable housing tax credits and other tax benefits recognized.

No definition available.

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Year in which contingent commitments to qualified affordable housing project investments are expected to be paid, in CCYY format.

No definition available.

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Amount of investment in qualified affordable housing projects.

No definition available.

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Amount of investment income (loss) of qualified affordable housing project investments accounted for using the equity method.

No definition available.

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The number of limited liability partnerships with investments in certain affordable housing projects.

No definition available.

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Amount of obligation related to Affordable Housing Program (AHP) assessments required by the Federal Home Loan Bank Act of 1932.

No definition available.

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