Regulatory Assets and Liabilities - Schedule of Regulatory Liabilities (Details) - CLECO POWER - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Deferred taxes, net
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ (154,651)	$ (155,537)
Corporate franchise tax, net
Regulatory Liabilities [Line Items]
Regulatory liabilities	(231)
Energy efficiency
Regulatory Liabilities [Line Items]
Regulatory liabilities	(324)
Other, net
Regulatory Liabilities [Line Items]
Regulatory liabilities	$ (7,884)	$ (4,979)