Segment Information - Summary of Revenue by Major Customers (Detail) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Customer A [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	40.90%	20.20%	34.40%	11.80%
Customer B [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	13.80%	10.70%	12.10%	11.80%
Customer C [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage		10.30%	11.00%	11.30%
Customer D [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage			10.80%	10.10%
RNG [Member] \| Customer A [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	40.90%	20.20%	34.40%	11.80%
RNG [Member] \| Customer B [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage	13.80%	10.70%	12.10%	11.80%
RNG [Member] \| Customer C [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage		10.30%	11.00%	11.30%
RNG [Member] \| Customer D [Member]
Revenue, Major Customer [Line Items]
Concentration risk, percentage			10.80%	10.10%