Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Schedule of Employee Deferred Compensation Plans

The following table presents the Company’s (income) loss from investments held in employee deferred compensation trusts (in thousands):


	Year Ended December 31,
	2022		2021		2020
Dividend income	$	(12,637)	$	(23,719)	$	(8,322)
Realized and unrealized (gains) losses	98,776		(37,359)		(66,866)
(Income) loss from investments held in employee deferred compensation trusts	$	86,139	$	(61,078)	$	(75,188)

Schedule of Allocation of Plan Assets

The following table sets forth the composition of the underlying assets which comprise the Company’s deferred compensation trust assets (in thousands):


			Fair Value Measurements Using
	Balance at December 31, 2022		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Assets
Money market funds	$	77,730	$	77,730	—	—
Mutual funds - bond	31,096		31,096		—	—
Mutual funds - stock	245,908		245,908		—	—
Mutual funds - blend	78,000		78,000		—	—
	$	432,734	$	432,734	—	—

			Fair Value Measurements Using
	Balance at December 31, 2021		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)	Significant Unobservable Inputs (Level 3)
Assets
Money market funds	$	66,700	$	66,700	—	—
Mutual funds - bond	30,750		30,750		—	—
Mutual funds - stock	303,277		303,277		—	—
Mutual funds - blend	94,264		94,264		—	—
	$	494,991	$	494,991	—	—

Schedule of Accounts Receivable, Allowance for Credit Loss

The following table sets forth the activity in the allowance for credit losses from December 31, 2020, through December 31, 2022 (in thousands):


	Allowance for Credit Losses


Balance as of December 31, 2020	$	19,617
Charges to expense	9,464
Deductions	(6,827)
Other, including translation adjustments	(724)
Balance as of December 31, 2021	$	21,530
Charges to expense	8,771
Deductions	(7,091)
Other, including translation adjustments	(649)
Balance as of December 31, 2022	$	22,561

Schedule of Depreciation Expense Computed Using Straight-Line Method over Useful Lives

Depreciation is computed using the straight-line method over the following useful lives:


Computer hardware			2 to 3 years
Computer software			2 to 5 years
Furniture and equipment			3 to 5 years
Leasehold improvements			Term of lease

Property and equipment consisted of the following (in thousands):


	December 31,
	2022		2021
Computer hardware	$	160,028	$	157,408
Computer software	219,863		246,013
Furniture and equipment	96,601		93,144
Leasehold improvements	171,893		165,153

Property and equipment, cost	648,385		661,718
Accumulated depreciation	(538,698)		(568,315)
Property and equipment, net	$	109,687	$	93,403