Goodwill and Other Intangible Assets (Changes in Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill at beginning of period	$ 131,542	$ 131,193	$ 1,857
Reorganization		0
Acquisitions		349	129,336
Disposals	(2,200)
Goodwill at end of period	129,342	131,542	131,193
Trade
Goodwill [Roll Forward]
Goodwill at beginning of period	122,067	127,781	1,171
Reorganization		(5,714)
Acquisitions		0	126,610
Disposals	(2,200)
Goodwill at end of period	119,867	122,067	127,781
Renewables
Goodwill [Roll Forward]
Goodwill at beginning of period	8,789	2,726	0
Reorganization		5,714
Acquisitions		349	2,726
Disposals	0
Goodwill at end of period	8,789	8,789	2,726
Plant Nutrient
Goodwill [Roll Forward]
Goodwill at beginning of period	686	686	686
Reorganization		0
Acquisitions		0	0
Disposals	0
Goodwill at end of period	$ 686	$ 686	$ 686