Summary of Significant Accounting Policies - Schedule of disaggregation of revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Revenues	$ 23,420	$ 23,834
PPA revenues
Disaggregation of Revenue [Line Items]
Revenues	7,554	7,896
SLA revenues
Disaggregation of Revenue [Line Items]
Revenues	10,032	9,940
Solar renewable energy credit revenues
Disaggregation of Revenue [Line Items]
Revenues	4,174	3,855
Performance-based incentives
Disaggregation of Revenue [Line Items]
Revenues	332	68
Servicing revenues
Disaggregation of Revenue [Line Items]
Revenues	213	649
Intangibles amortization, unfavorable solar renewable energy revenue agreements
Disaggregation of Revenue [Line Items]
Revenues	93	748
Other revenue
Disaggregation of Revenue [Line Items]
Revenues	$ 1,022	$ 678

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details