FAIR VALUE MEASUREMENT AND FAIR VALUES OF FINANCIAL INSTRUMENTS (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Balance	$ 8,517	$ 10,739	$ 8,507	$ 10,349
Gains (losses) included in other comprehensive income	(139)	(608)	(178)	(218)
Reclassification of losses from adjustment for impairment of securities		179	49	179
Purchases, Issuances, and Settlements	0	0	0	0
Balance	8,378	10,310	8,378	10,310
Corporate Debt Securities [Member]
Balance	8,517	9,850	8,507	9,392
Gains (losses) included in other comprehensive income	(139)	(523)	(178)	(65)
Reclassification of losses from adjustment for impairment of securities		179	49	179
Purchases, Issuances, and Settlements	0	0	0	0
Balance	8,378	9,506	8,378	9,506
Us States and Political Subdivisions Debt Securities [Member]
Balance		889		957
Gains (losses) included in other comprehensive income		(85)		(153)
Reclassification of losses from adjustment for impairment of securities		0		0
Purchases, Issuances, and Settlements		0		0
Balance		$ 804		$ 804

Amount of gain (loss) recognized in other comprehensive income, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of purchases, sales, issues, and settlements (net) which have taken place in relation to assets measured at fair value on a recurring basis using unobservable inputs (level 3).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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

- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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

- Definition

Reclassification of losses from adjustment for impairment of securities.

+ References

No definition available.

+ Details

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Namespace Prefix:	wcbo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration