Description of Business and Basis of Presentation - Narrative (Details) customer in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020 state customer renewal_option	Jan. 01, 2020 USD ($)
Subsidiary, Sale of Stock [Line Items]
Number of customers | customer	85
Number of states in which entity operates (more than) | state	20
Maximum renewal term	10 years
Cumulative-effect adjustment		$ (9,908)
Accounting Standards Update 2016-13
Subsidiary, Sale of Stock [Line Items]
Cumulative-effect adjustment		$ 9,900
Lease and Power Purchase Agreement (PPA)
Subsidiary, Sale of Stock [Line Items]
Number of options to renew term | renewal_option	2
Renewal term	5 years
Minimum
Subsidiary, Sale of Stock [Line Items]
Agreement term	10 years
Maximum
Subsidiary, Sale of Stock [Line Items]
Agreement term	25 years