Goodwill and Other Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Amortized intangible assets
Original Cost	$ 294,940	$ 289,290	$ 294,940
Accumulated Amortization	119,628	146,350	119,628
Net Book Value	175,312	142,940	175,312
Customer list
Amortized intangible assets
Original Cost	131,832	131,432	131,832
Accumulated Amortization	33,971	45,946	33,971
Net Book Value	97,861	85,486	97,861
Non-compete agreements
Amortized intangible assets
Original Cost	23,813	21,346	23,813
Accumulated Amortization	12,446	15,711	12,446
Net Book Value	11,367	5,635	11,367
Supply agreement
Amortized intangible assets
Original Cost	9,060	9,060	9,060
Accumulated Amortization	6,526	6,988	6,526
Net Book Value	2,534	2,072	2,534
Technology
Amortized intangible assets
Original Cost	13,400	13,400	13,400
Accumulated Amortization	6,197	7,538	6,197
Net Book Value	7,203	5,862	7,203
Trademarks and patents
Amortized intangible assets
Original Cost	15,810	15,810	15,810
Accumulated Amortization	9,491	10,764	9,491
Net Book Value	6,319	5,046	6,319
Lease intangible
Amortized intangible assets
Original Cost	9,744	8,195	9,744
Accumulated Amortization	4,600	5,368	4,600
Net Book Value	5,144	2,827	5,144
Software
Amortized intangible assets
Original Cost	90,836	89,038	90,836
Accumulated Amortization	46,010	53,626	46,010
Net Book Value	44,826	35,412	44,826
Other
Amortized intangible assets
Original Cost	445	1,009	445
Accumulated Amortization	387	409	387
Net Book Value	58	$ 600	$ 58
Minimum
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		1 year
Minimum | Customer list
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		3 years	3 years
Minimum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		1 year	1 year
Minimum | Supply agreement
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		10 years	10 years
Minimum | Technology
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		10 years	10 years
Minimum | Trademarks and patents
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		7 years	7 years
Minimum | Lease intangible
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		1 year	1 year
Minimum | Software
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		2 years	2 years
Minimum | Other
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		3 years	3 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		10 years
Maximum | Customer list
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		10 years	10 years
Maximum | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		7 years	7 years
Maximum | Supply agreement
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		10 years	10 years
Maximum | Technology
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		10 years	10 years
Maximum | Trademarks and patents
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		10 years	10 years
Maximum | Lease intangible
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		8 years	8 years
Maximum | Software
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		10 years	10 years
Maximum | Other
Finite-Lived Intangible Assets [Line Items]
Useful Life (in years)		5 years	5 years
Plant Nutrient | Trademarks and patents
Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 2,200