Net Sales - Summary of Net Sales Disaggregated by Principal Markets (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Net sales:
Net sales	$ 158,602	$ 155,431	$ 496,181	$ 450,159
Chemical
Net sales:
Net sales	158,602	155,431	496,181	450,159
Chemical \| AN and Nitric Acid
Net sales:
Net sales	80,946	57,522	225,832	176,847
Chemical \| Urea ammonium nitrate (UAN)
Net sales:
Net sales	20,206	51,423	131,865	147,550
Chemical \| Ammonia
Net sales:
Net sales	45,179	37,072	107,504	97,174
Chemical \| Other
Net sales:
Net sales	$ 12,271	$ 9,414	$ 30,980	$ 28,588

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