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Employee Benefit Plans (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Defined contribution plan, age of eligibility | 21 years |  |
Defined contribution plan, required service period prior to plan participation | 0 years 0 months 90 days |  |
Defined contribution plan, employer matching contribution (percent) | 50.00% |  |
Defined contribution plan, maximum annual contribution per employee (percent) | 2.50% |  |
Defined contribution plan, employer discretionary contribution amount | $ 933 | $ 929 | $ 820
Deferred compensation arrangement with individual, interest rate on notes payable | 5.00% |  |
Deferred compensation arrangement with individual, notes payable plus accrued interest | $ 169 | $ 124 |
Minimum [Member] |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Deferred compensation arrangement with individual, minimum contractual term | 5 years |  |
Maximum [Member] |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Deferred compensation arrangement with individual, minimum contractual term | 10 years |  |

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- Definition Deferred Compensation Arragement with Individual, Notes Payable Plus Accrued Interest + References No definition available. + Details
Name: | cbl_DeferredCompensationArragementWithIndividualNotesPayablePlusAccruedInterest
Namespace Prefix: | cbl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Deferred Compensation Arrangement with Individual, Interest Rate on Notes Payable + References No definition available. + Details
Name: | cbl_DeferredCompensationArrangementWithIndividualInterestRateOnNotesPayable
Namespace Prefix: | cbl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Deferred Compensation Arrangement with Individual, Minimum Contractual Term + References No definition available. + Details
Name: | cbl_DeferredCompensationArrangementWithIndividualMinimumContractualTerm
Namespace Prefix: | cbl_
Data Type: | xbrli:durationItemType
Balance Type: | na
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- Definition Defined Contribution Plan Age of Eligiblity + References No definition available. + Details
Name: | cbl_DefinedContributionPlanAgeofEligiblity
Namespace Prefix: | cbl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Defined Contribution Plan, Required Service Period Prior to Plan Participation + References No definition available. + Details
Name: | cbl_DefinedContributionPlanRequiredServicePeriodPriorToPlanParticipation
Namespace Prefix: | cbl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
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