Summary of Significant Accounting Policies - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 1,230,064	$ 1,196,061	$ 1,100,000
Under Customer Agreements:
Deferred Revenue Arrangement [Line Items]
Deferred revenue	954,876	945,426
Under Customer Agreements: | Payments received, net
Deferred Revenue Arrangement [Line Items]
Deferred revenue	880,755	873,137
Under Customer Agreements: | Financing component balance
Deferred Revenue Arrangement [Line Items]
Deferred revenue	74,121	72,289
Under SREC contracts:
Deferred Revenue Arrangement [Line Items]
Deferred revenue	275,188	250,635
Under SREC contracts: | Payments received, net
Deferred Revenue Arrangement [Line Items]
Deferred revenue	260,352	237,800
Under SREC contracts: | Financing component balance
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 14,836	$ 12,835