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Capital Ratios (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Capital Ratios
Tier 1 Capital (to Average Assets), Actual Ratio (as a percent)	11.72%	11.61%
Tier 1 Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	19.22%	19.33%
Total Capital (to Risk Weighted Assets), Actual Ratio (as a percent)	20.24%	20.36%
Identified intangibles and goodwill	$ 284,737,000
Percentage of capital securities issued by trust qualifying as Tier I capital, maximum	25.00%
Percentage of capital securities issued by trust qualifying as Tier II capital, minimum	25.00%
Capital securities issued by the trust, qualifying as Tier I capital	$ 180,416,000	$ 190,726,000

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Represents capital securities issued by trust that is qualified as Tier I capital as on the reporting date.

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The aggregate amount of identified intangible assets and goodwill recorded in connection with acquisitions made by the entity, are deducted from the sum of core capital elements while determining capital ratios of the entity.

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- Definition

Represents the maximum percentage of capital securities issued by the trust qualifying as Tier I capital on an aggregate basis.

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Represents the minimum percentage of capital securities issued by the trust qualifying as Tier II capital on an aggregate basis.

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Total Capital divided by risk weighted assets as defined in the regulations.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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