Leases - Future Minimum Lease Payments Due Under Finance Lease (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Years ending Dec. 31,
Current liabilities	$ 572
Non-current liabilities	15,712
CLECO POWER
Lessee, Lease, Description [Line Items]
Nine months ending Dec. 31, 2019	1,653
Years ending Dec. 31,
2020	2,203
2021	2,203
2022	2,203
2023	2,203
2024	2,203
Thereafter	17,674
Total minimum lease payments	30,342
Less: amount representing interest	14,058
Present value of net minimum lease payments	16,284
Current liabilities	572
Non-current liabilities	$ 15,712