XML 108 R60.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Investment Securities (Schedule of OTTI Charges) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Gain (Loss) on Investments [Line Items] |  |  |
One variable rate private label CMO | $ 0 | $ 484 | $ 18
Pooled trust preferred securities | 628 | 68 | 0
Principal losses on a variable rate CMO | 24 | 318 | 324
Total other-than-temporary impairment charges | $ 652 | $ 870 | $ 342

X
- Definition One variable private rate label CMO + References No definition available. + Details
Name: | cnbc_OneVariablePrivateRateLabelCmo
Namespace Prefix: | cnbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Principal losses on variable rate CMO + References No definition available. + Details
Name: | cnbc_PrincipalLossesOnVariableRateCmo
Namespace Prefix: | cnbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Two Pooled Trust Preferred Securities + References No definition available. + Details
Name: | cnbc_TwoPooledTrustPreferredSecurities
Namespace Prefix: | cnbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -URI http://asc.fasb.org/extlink&oid=27724398&loc=SL6284393-111563 + Details
Name: | us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ScheduleOfGainLossOnInvestmentsIncludingMarketableSecuritiesAndInvestmentsHeldAtCostIncomeStatementReportedAmountsSummaryLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration