Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	$ 135,500	$ 126,500
Accumulated Amortization	(60,100)	(55,400)
Net Carrying Amounts	75,430	71,118
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	122,900	116,100
Accumulated Amortization	(51,100)	(47,300)
Net Carrying Amounts	71,800	68,800
Non-compete agreements
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	1,200	1,100
Accumulated Amortization	(600)	(600)
Net Carrying Amounts	600	500
Customer backlog
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	1,700	0
Accumulated Amortization	(400)	0
Net Carrying Amounts	1,300	0
Trade name
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	900	800
Accumulated Amortization	(800)	(800)
Net Carrying Amounts	100	0
Developed software
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	8,800	8,500
Accumulated Amortization	(7,200)	(6,700)
Net Carrying Amounts	$ 1,600	$ 1,800