Loans and Leases (Purchased impaired loans (in text)) (Details) (Community Banc-Corp of Sheboygan, Inc., USD $) In Millions, unless otherwise specified	Jan. 16, 2015
Community Banc-Corp of Sheboygan, Inc.
Financing Receivable, Impaired [Line Items]
Loans	$ 413.4
Estimated fair value of loans acquired	$ 395.0

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant