Combined Guarantor Subsidiaries - Related Party Transactions - Narrative (Details) - Guarantor Subsidiaries - CBL Management - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items]
Management fee expense	$ 1,397	$ 1,459	$ 4,411	$ 4,464
Amounts payable for management fees	$ 313		$ 313		$ 176
Minimum
Condensed Financial Statements, Captions [Line Items]
Management fee (as a percent)			2.50%
Maximum
Condensed Financial Statements, Captions [Line Items]
Management fee (as a percent)			3.50%