Revenue (Disaggregation of Revenues) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Disaggregation of Revenue [Line Items]
Total	$ 688,111	$ 635,445	$ 2,402,358	$ 2,269,314
Specialty nutrients
Disaggregation of Revenue [Line Items]
Total	27,651	44,957	195,982	242,582
Primary nutrients
Disaggregation of Revenue [Line Items]
Total	74,565	92,071	454,416	518,439
Products and co-products
Disaggregation of Revenue [Line Items]
Total	514,605	411,877	1,481,115	1,182,862
Propane
Disaggregation of Revenue [Line Items]
Total	29,572	47,867	136,250	203,459
Other
Disaggregation of Revenue [Line Items]
Total	41,718	38,673	134,595	121,972
Trade
Disaggregation of Revenue [Line Items]
Total	157,989	146,247	495,295	535,280
Trade | Specialty nutrients
Disaggregation of Revenue [Line Items]
Total	0	0	0	0
Trade | Primary nutrients
Disaggregation of Revenue [Line Items]
Total	0	0	0	0
Trade | Products and co-products
Disaggregation of Revenue [Line Items]
Total	114,962	88,201	318,217	297,267
Trade | Propane
Disaggregation of Revenue [Line Items]
Total	29,572	47,867	136,250	203,459
Trade | Other
Disaggregation of Revenue [Line Items]
Total	13,455	10,179	40,828	34,554
Ethanol
Disaggregation of Revenue [Line Items]
Total	401,589	325,322	1,168,996	889,834
Ethanol | Specialty nutrients
Disaggregation of Revenue [Line Items]
Total	0	0	0	0
Ethanol | Primary nutrients
Disaggregation of Revenue [Line Items]
Total	0	0	0	0
Ethanol | Products and co-products
Disaggregation of Revenue [Line Items]
Total	399,643	323,676	1,162,898	885,595
Ethanol | Propane
Disaggregation of Revenue [Line Items]
Total	0	0	0	0
Ethanol | Other
Disaggregation of Revenue [Line Items]
Total	1,946	1,646	6,098	4,239
Nutrient & Industrial
Disaggregation of Revenue [Line Items]
Total	128,533	163,876	738,067	844,200
Nutrient & Industrial | Specialty nutrients
Disaggregation of Revenue [Line Items]
Total	27,651	44,957	195,982	242,582
Nutrient & Industrial | Primary nutrients
Disaggregation of Revenue [Line Items]
Total	74,565	92,071	454,416	518,439
Nutrient & Industrial | Products and co-products
Disaggregation of Revenue [Line Items]
Total	0	0	0	0
Nutrient & Industrial | Propane
Disaggregation of Revenue [Line Items]
Total	0	0	0	0
Nutrient & Industrial | Other
Disaggregation of Revenue [Line Items]
Total	$ 26,317	$ 26,848	$ 87,669	$ 83,179