Income Taxes - Components of Deferred Income Tax Amounts (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Deferred income tax assets
Employee deferred compensation and other benefit obligations	$ 212,739	$ 189,407
Credits and net operating loss carryforwards	44,568	31,337
Stock-based compensation	8,327	7,440
Allowance for credit losses	4,328	5,909
Workers’ compensation	2,259	2,467
Operating lease liabilities	43,204	43,230
Other	15,397	17,082
Total deferred income tax assets	330,822	296,872
Deferred income tax liabilities
Amortization of intangible assets	(21,470)	(20,816)
Property and equipment basis differences	(26,315)	(757)
Unrealized gains from investments held in employee deferred compensation trusts	(68,260)	(43,709)
Right-of-use assets	(33,648)	(35,213)
Other	(13,616)	(12,230)
Total deferred income tax liabilities	(163,309)	(112,725)
Valuation allowance	(33,216)	(26,417)
Total deferred income tax assets, net	$ 134,297	$ 157,730