Acquisitions (Narrative) (Details) - USD ($) $ in Thousands			3 Months Ended
	Mar. 31, 2025	Feb. 11, 2025	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Business Acquisition [Line Items]
Goodwill	$ 594,620		$ 594,620		$ 507,419
Selling, general, and administrative expense			52,190	$ 52,652
Lane Supply
Business Acquisition [Line Items]
Acquisition purchase price		$ 117,100
Goodwill		$ 38,245
Two Privately Held Businesses
Business Acquisition [Line Items]
Acquisition purchase price	90,200
Two Metal Roofing Businesses
Business Acquisition [Line Items]
Goodwill	$ 48,912		48,912
2025 Acquisitions
Business Acquisition [Line Items]
Selling, general, and administrative expense			$ 2,600