v3.20.4

Revenue - Revenue Disaggregated by Product (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 349,953	$ 404,177	$ 351,082
Net sales, exclusive of freight and other
Disaggregation of Revenue [Line Items]
Net sales	306,490	363,096	309,216
Ammonia
Disaggregation of Revenue [Line Items]
Net sales	94,117	94,467	66,254
UAN
Disaggregation of Revenue [Line Items]
Net sales	198,258	251,199	222,329
Urea products
Disaggregation of Revenue [Line Items]
Net sales	14,115	17,430	20,633
Freight revenue
Disaggregation of Revenue [Line Items]
Net sales	33,329	33,436	33,567
Other revenue
Disaggregation of Revenue [Line Items]
Net sales	$ 10,134	$ 7,645	$ 8,299

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