Net Sales - Summary of Net Sales Disaggregated by Principal Markets (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net sales:
Net sales	$ 114,287	$ 184,273	$ 461,096	$ 668,057
Chemical
Net sales:
Net sales	114,287	184,273	461,096	668,057
Chemical | AN and Nitric Acid
Net sales:
Net sales	46,026	66,161	173,859	234,103
Chemical | Urea ammonium nitrate (UAN)
Net sales:
Net sales	30,090	50,459	117,585	184,014
Chemical | Ammonia
Net sales:
Net sales	26,823	52,075	129,850	200,861
Chemical | Other
Net sales:
Net sales	$ 11,348	$ 15,578	$ 39,802	$ 49,079