Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2012	Dec. 31, 2011
Line of Credit Facility [Line Items]
Collateral supporting commitments (in hundredths)	100.00%
Trust preferred securities commitments	$ 25.8	$ 25.8
Letter of Credit [Member]
Line of Credit Facility [Line Items]
Commitment under letters of credit	$ 1.6

Balance from the issuance of preferred stocks by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures.

No definition available.

Name:	wbco_TrustPreferredSecuritiesCommitments
Namespace Prefix:	wbco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant