Net Sales - Summary of Net Sales Disaggregated by Principal Markets (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net sales:
Net sales	$ 180,964	$ 198,981
Chemical
Net sales:
Net sales	180,964	198,981
Chemical | AN and Nitric Acid
Net sales:
Net sales	58,272	71,800
Chemical | Urea ammonium nitrate (UAN)
Net sales:
Net sales	46,590	56,569
Chemical | Ammonia
Net sales:
Net sales	63,415	59,342
Chemical | Other
Net sales:
Net sales	$ 12,687	$ 11,270