Acquisitions (Narrative) (Details) $ in Thousands						12 Months Ended
	Dec. 11, 2020 USD ($)	Oct. 15, 2020 USD ($)	Feb. 13, 2020 USD ($)	Jan. 15, 2020 USD ($)	Aug. 30, 2019 USD ($)	Dec. 31, 2021 USD ($) business	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Business Acquisition [Line Items]
Number of businesses acquired | business						5
Goodwill						$ 510,942	$ 514,279	$ 307,355
Renewables
Business Acquisition [Line Items]
Number of businesses acquired | business						2
Goodwill						$ 188,680	192,527	44,816
Agtech
Business Acquisition [Line Items]
Number of businesses acquired | business						2
Goodwill						$ 85,132	84,622	32,786
Residential
Business Acquisition [Line Items]
Number of businesses acquired | business						1
Goodwill						$ 205,452	$ 205,452	$ 198,075
Apeks
Business Acquisition [Line Items]
Acquisition purchase price					$ 12,600
Goodwill					$ 6,436
TerraSmart LLC
Business Acquisition [Line Items]
Acquisition purchase price						223,900
Goodwill						$ 140,997
Sunfig Corporation
Business Acquisition [Line Items]
Acquisition purchase price	$ 3,800
Goodwill	$ 3,500
Architectural Mailboxes LLC
Business Acquisition [Line Items]
Acquisition purchase price		$ 26,900
Goodwill		$ 7,400
Delta Separations, LLC
Business Acquisition [Line Items]
Acquisition purchase price			$ 47,100
Goodwill			$ 32,200
Thermo Energy Systems
Business Acquisition [Line Items]
Acquisition purchase price				$ 7,300
Goodwill				$ 19,100