Segment Information - Summary of Revenue by Major Customers (Detail) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Customer A [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	17.40%	17.60%	22.00%
Customer B [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	11.30%	15.70%	11.70%
Customer C [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage		13.80%	11.70%
Customer D [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage		11.80%
RNG [Member] \| Customer A [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	17.40%	17.60%	22.00%
RNG [Member] \| Customer B [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	11.30%	15.70%	11.70%
RNG [Member] \| Customer C [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage		13.80%	11.70%
RNG [Member] \| Customer D [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage		11.80%