Net Sales - Summary of Net Sales Disaggregated by Principal Markets (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net sales:
Net sales	$ 140,073	$ 165,845	$ 278,277	$ 346,809
Chemical
Net sales:
Net sales	140,073	165,845	278,277	346,809
Chemical | AN and Nitric Acid
Net sales:
Net sales	58,442	69,561	106,877	127,833
Chemical | Urea ammonium nitrate (UAN)
Net sales:
Net sales	42,808	40,905	84,000	87,495
Chemical | Ammonia
Net sales:
Net sales	28,448	39,612	67,978	103,027
Chemical | Other
Net sales:
Net sales	$ 10,375	$ 15,767	$ 19,422	$ 28,454