Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill, Core Deposit Premium and Other Intangible Assets (Goodwill) (Details) (USD $)	0 Months Ended
	Jan. 16, 2015	Mar. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Goodwill		$ 51,073,000us-gaap_Goodwill	$ 35,583,000us-gaap_Goodwill
Community Banc-Corp of Sheboygan, Inc.
Goodwill [Line Items]
Goodwill	15,490,000
Community Banc-Corp of Sheboygan, Inc. \| Core Deposits
Goodwill [Line Items]
Intangibles recognized	6,000,000
Intangibles, amortization period	10 years
Community Banc-Corp of Sheboygan, Inc. \| Commercial Servicing Rights
Goodwill [Line Items]
Intangibles recognized	$ 4,300,000
Intangibles, amortization period	10 years