Recent Accounting Developments (Policies)	9 Months Ended
Sep. 30, 2012
Text Block [Abstract]
Subsequent Measurement of Indemnification Assets	Subsequent Accounting for Indemnification Assets In October 2012, the FASB issued ASU No. 2012-06, “Business Combinations (Topic 805): Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution,” to address the diversity in practice and interpret guidance related to the subsequent measurement of an indemnification asset recognized in a government-assisted acquisition. These indemnification assets are recorded by the Company as FDIC indemnification assets on the Consolidated Statements of Condition. This ASU clarifies existing guidance by asserting that subsequent changes in expected cash flows related to an indemnification asset should be amortized over the shorter of the life of the indemnification agreement or the life of the underlying loan. This guidance is to be applied with respect to changes in cash flows on existing indemnification agreements as well as prospectively to new indemnification agreements. The guidance is effective for fiscal years beginning after December 15, 2012. The Company does not expect adoption of this guidance to have a material impact on the Company’s consolidated financial statements.

Subsequent Accounting for Indemnification Assets

In October 2012, the FASB issued ASU No. 2012-06, “Business Combinations (Topic 805): Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution,” to address the diversity in practice and interpret guidance related to the subsequent measurement of an indemnification asset recognized in a government-assisted acquisition. These indemnification assets are recorded by the Company as FDIC indemnification assets on the Consolidated Statements of Condition. This ASU clarifies existing guidance by asserting that subsequent changes in expected cash flows related to an indemnification asset should be amortized over the shorter of the life of the indemnification agreement or the life of the underlying loan. This guidance is to be applied with respect to changes in cash flows on existing indemnification agreements as well as prospectively to new indemnification agreements. The guidance is effective for fiscal years beginning after December 15, 2012. The Company does not expect adoption of this guidance to have a material impact on the Company’s consolidated financial statements.