Leases - Future Minimum Lease Payments Due Under Long-Term Operating Leases (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Six months ending Dec. 31, 2019	$ 2,021
Years ending Dec. 31,
2020	3,872
2021	2,546
2022	1,178
2023	1,151
Thereafter	5,951
Total minimum lease payments	16,719
Less: amount representing interest	2,197
Present value of net minimum operating lease payments	14,522
Current liabilities	3,776
Non-current liabilities	10,746
CLECO POWER
Lessee, Lease, Description [Line Items]
Six months ending Dec. 31, 2019	1,897
Years ending Dec. 31,
2020	3,838
2021	2,512
2022	1,144
2023	1,120
Thereafter	5,909
Total minimum lease payments	16,420
Less: amount representing interest	2,182
Present value of net minimum operating lease payments	14,238
Current liabilities	3,640
Non-current liabilities	$ 10,598