Leases - Total Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Finance lease cost
Amortization of ROU assets	$ 1,120	$ 1,120
Interest on lease liabilities	1,367	1,448
Operating lease cost	3,589	3,685
Variable lease cost	790	508
Total lease cost	6,866	6,761
Cleco Power
Finance lease cost
Amortization of ROU assets	1,120	1,120
Interest on lease liabilities	1,367	1,448
Operating lease cost	3,581	3,675
Variable lease cost	790	508
Total lease cost	$ 6,858	$ 6,751