Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Schedule of Company's Income from Investments Held in Employee Deferred Compensation Trusts

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

	Three Months Ended  September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Dividend income	$	443	$	732	$	1,887	$	3,594
Realized and unrealized gain	25,652		718		32,743		31,034
	$	26,095	$	1,450	$	34,630	$	34,628

Composition of Underlying Assets Comprising Company's Deferred Compensation 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 September 30, 2020		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	$	151,171	$	151,171	—	—
Mutual funds - bond	26,717		26,717		—	—
Mutual funds - stock	202,707		202,707		—	—
Mutual funds - blend	65,144		65,144		—	—
	$	445,739	$	445,739	—	—
	Fair Value Measurements Using
	Balance at December 31, 2019		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	$	141,295	$	141,295	—	—
Mutual funds - bond	28,451		28,451		—	—
Mutual funds - stock	170,469		170,469		—	—
Mutual funds - blend	58,227		58,227		—	—
	$	398,442	$	398,442	—	—

Schedule of Credit Losses

The following table sets forth the activity in the allowance for credit losses from December 31, 2019, through September 30, 2020 (in thousands):

	Allowance for Credit Losses
Balance as of December 31, 2019	$	22,885
Adoption of accounting pronouncement	558
Balance as of January 1, 2020	$	23,443
Charges to expense	4,579
Deductions	(6,308)
Other, including translation adjustments	(496)
Balance as of September 30, 2020	$	21,218