Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred tax assets
Allowance for doubtful accounts	$ 4,031	$ 3,887
Deferred and other compensation	13,081	15,184
Interest expense limitation	19,944	21,677
Fixed assets and capitalized software	34,073	27,781
Pension and other post-employment benefits	11,847	10,578
Lease liabilities	1,948	2,627
Reserve for facility exit costs	0	4,719
Net operating loss and credit carryforwards	35,550	35,325
Non-compete and other agreements	19,739	24,375
Goodwill and other intangible assets	11,931	13,319
Other, net	14,843	13,436
Total deferred tax assets	166,987	172,908
Net deferred tax assets	150,202	157,246
Deferred tax liabilities
Deferred costs	(2,542)	(1,754)
Investment in subsidiaries	(4,160)	(4,193)
Lease right-of-use assets	(1,468)	(5,323)
Fixed assets and capitalized software	(6,287)	(2,889)
Other, net	(2,762)	0
Total deferred tax liabilities	(17,219)	(14,159)
Net deferred tax asset	132,983	143,087
Operating Loss Carryforwards [Line Items]
Net operating loss and credit carryforwards	35,550	$ 35,325
United States
Deferred tax assets
Net operating loss and credit carryforwards	84,200
Operating Loss Carryforwards [Line Items]
Net operating loss and credit carryforwards	84,200
Deferred tax assets, operating loss carryforwards	30,900
Deferred tax assets, operating loss carryforwards with an indefinite carryforward period	53,300
Deferred tax assets, operating loss carryforwards, domestic, subject to an annual section 382 limitation	800
State and Local Jurisdiction
Deferred tax assets
Net operating loss and credit carryforwards	275,800
Operating Loss Carryforwards [Line Items]
Net operating loss and credit carryforwards	275,800
Deferred tax assets, operating loss carryforwards	249,400
Deferred tax assets, operating loss carryforwards with an indefinite carryforward period	$ 26,400