Share-Based Compensation - Summary (Details) - USD ($) $ / shares in Units, $ in Thousands				1 Months Ended	3 Months Ended
		Feb. 17, 2023		Feb. 28, 2023	Mar. 31, 2023	Mar. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation cost						$ 2,743
Weighted-Average Grant Date Fair Value
Weighted average grant-date fair value, granted					$ 6,120
Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation cost					$ 1,843	1,622
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested, beginning of period (shares)					662,875
Granted (shares)					355,278
Vested (shares)					(265,341)
Forfeited (shares)					(5,279)
Nonvested, end of period (shares)					747,533
Weighted-Average Grant Date Fair Value
Weighted average grant-date fair value, nonvested, beginning of period (USD per share)					$ 27.42
Weighted average grant-date fair value, granted (USD per share)					26.21
Weighted average grant-date fair value, vested (USD per share)					26.25
Weighted average grant-date fair value, forfeited (USD per share)					24.86
Weighted average grant-date fair value, nonvested, ending of period (USD per share)					$ 27.28
Unrecognized compensation cost related to nonvested stock awards					$ 18,507
Compensation cost to be recognized over a weighted-average period					2 years 8 months 12 days
Weighted average grant-date fair value, granted					$ 9,313
Total fair value of shares vested					$ 6,755
RSU component award vesting performance period				3 years
Granted (shares)					355,278
weighted-average grant date fair value					$ 27.28
Restricted Stock Awards | Minimum
Weighted-Average Grant Date Fair Value
Component percentage in long-term incentive program				40.00%
Restricted Stock Awards | Maximum
Weighted-Average Grant Date Fair Value
Component percentage in long-term incentive program				45.00%
Performance Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation cost					$ 1,409	$ 1,121
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested, beginning of period (shares)					607,128
Granted (shares)					157,789
Forfeited (shares)					(51,019)
Nonvested, end of period (shares)					724,807
Weighted-Average Grant Date Fair Value
Weighted average grant-date fair value, nonvested, beginning of period (USD per share)					$ 24.69
Weighted average grant-date fair value, granted (USD per share)					38.79
Weighted average grant-date fair value, forfeited (USD per share)					24.87
Weighted average grant-date fair value, nonvested, ending of period (USD per share)		$ 38.79	[1]		$ 27.90
Unrecognized compensation cost related to nonvested stock awards					$ 17,036
Compensation cost to be recognized over a weighted-average period					3 years 1 month 6 days
Pecentage of shares issued based on achievement of long term relative TSR performance				40.00%
Percentage of shares issued based on achievement of TSR performance				60.00%
PSU component performance period				3 years
Performance period		3 years
Granted (shares)					157,789
Incremental granted (shares)	[2]				10,909
Weighted average incremental grant-date fair value, granted (USD per share)	[2]				24.54
weighted-average grant date fair value		$ 38.79	[1]		$ 27.90
Risk-free interest rate (as a percent)	[3]	4.37%
Expected share price volatility (as a percent)	[4]	62.50%
Performance Stock Awards | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted (shares)		63,114
Weighted-Average Grant Date Fair Value
Weighted average grant-date fair value, nonvested, ending of period (USD per share)		$ 40.64
Granted (shares)		63,114
weighted-average grant date fair value		$ 40.64
Performance Stock Awards | Officer
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Granted (shares)		94,675
Weighted-Average Grant Date Fair Value
Weighted average grant-date fair value, nonvested, ending of period (USD per share)		$ 37.55
Granted (shares)		94,675
weighted-average grant date fair value		$ 37.55
Performance Stock Awards | Minimum
Weighted-Average Grant Date Fair Value
Component percentage in long-term incentive program				55.00%
Performance Stock Awards | Maximum
Weighted-Average Grant Date Fair Value
Component percentage in long-term incentive program				60.00%

[1] The value of the PSU awards is estimated on the date of grant using a Monte Carlo simulation model. The valuation consists of computing the fair value using CBL's simulated stock price as well as TSR over a three-year performance period. The award is modeled as a contingent claim in that the expected return on the underlying shares is risk-free and the rate of discounting the payoff of the award is also risk-free. The weighted-average fair value per share related to the 2023 PSUs consists of 63,114 shares at a fair value of $40.64 per share (which relates to the relative TSR) and 94,675 shares at a fair value of $37.55 per share (which relates to absolute TSR).

[2] PSUs granted shall be adjusted as if the shares of common stock represented by such PSUs had received any applicable stock or cash dividends declared. As for stock dividends, a number of PSUs shall be added to the target amount corresponding to the number of shares of common stock that would have been payable per such stock dividend on the then outstanding number of PSUs under the agreement as if common stock had been issued for such PSUs. As to cash dividends, a number of PSUs shall be added to the target amount corresponding to the number of shares of common stock that could have been acquired by the cash dividend payable on the then outstanding number of PSUs under the agreement as if common stock had been issued for such PSUs, and the calculation of the number of shares of common stock that could have been acquired shall be based on the closing price of the common stock on the record date for the cash dividend at issue.

[3] The risk-free interest rate was based on the yield curve on zero-coupon U.S. Treasury securities in effect as of the valuation date, which is the grant date listed above.

[4] The computation of expected volatility was based on the historical volatility of CBL's shares of common stock based on annualized daily total continuous returns over a three-year period and implied volatility data based on the trailing month average of daily implied volatilities implied by stock call option contracts that were both closest to the terms shown and closest to the money.