Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Intangible Assets, Net [Abstract]
Gross Carrying Amount	$ 126,500	$ 165,000
Accumulated Amortization	(55,400)	(76,100)
Net Carrying Amount	71,118	88,937
Customer Relationships [Member]
Intangible Assets, Net [Abstract]
Gross Carrying Amount	116,100	151,900
Accumulated Amortization	(47,300)	(68,400)
Net Carrying Amount	68,800	83,500
Noncompete Agreements [Member]
Intangible Assets, Net [Abstract]
Gross Carrying Amount	1,100	1,700
Accumulated Amortization	(600)	(1,000)
Net Carrying Amount	500	700
Customer Backlog [Member]
Intangible Assets, Net [Abstract]
Gross Carrying Amount	0	2,700
Accumulated Amortization	0	(700)
Net Carrying Amount	0	2,000
Trade Names [Member]
Intangible Assets, Net [Abstract]
Gross Carrying Amount	800	900
Accumulated Amortization	(800)	(700)
Net Carrying Amount	0	200
Software Development [Member]
Intangible Assets, Net [Abstract]
Gross Carrying Amount	8,500	7,800
Accumulated Amortization	(6,700)	(5,300)
Net Carrying Amount	$ 1,800	$ 2,500