Other Real Estate Owned ("OREO"), net (Schedule of Other Real Estate Owned Expenses) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Real Estate [Abstract]
Operating costs	$ 175cacb_OtherRealEstateOwnedOperatingCost	$ 254cacb_OtherRealEstateOwnedOperatingCost	$ 568cacb_OtherRealEstateOwnedOperatingCost
Gains losses on sales of OREO	(183)	(81)	(104)
Additions to valuation allowance	996	356	1,261
Total	$ 988cacb_OtherRealEstateOwnedExpenses	$ 529cacb_OtherRealEstateOwnedExpenses	$ 1,725cacb_OtherRealEstateOwnedExpenses

Amount of expense recognized in the income statement for a decrease in valuation of real estate owned (REO).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10(4))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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