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Employee Benefit Plans - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Retirement Benefits [Abstract] |  |  |
Defined contribution plan, age of eligibility | 21 years |  |
Defined contribution plan, required service period prior to plan participation | 2 months |  |
Defined contribution plan, employer matching contribution (as a percent) | 50.00% |  |
Defined contribution plan, maximum annual contribution per employee (as a percent) | 2.50% |  |
Defined contribution plan, employer discretionary contribution amount | $ 903 | $ 890 | $ 823

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- Definition Defined Contribution Plan Age of Eligibility + References No definition available. + Details
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Balance Type: | na
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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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- References No definition available. + Details
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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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
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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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: | dtr-types:percentItemType
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