Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Summary of Assets and (Liabilities) Measured at Fair Value on a Recurring Basis

The following table summarizes our assets and (liabilities) at September 30, 2020 and December 31, 2019, respectively, that are measured at fair value on a recurring basis subsequent to initial recognition and indicates the fair value hierarchy of the valuation techniques utilized by us to determine such fair value (in thousands):

	Level	September 30, 2020			December 31, 2019
Deferred compensation plan assets	1	$	113,749		$	106,851
Available-for-sale debt securities	1		30,391			60,659
Deferred compensation plan liabilities	1		(113,749	)		(106,851	)
Interest rate swaps	2		(2,915	)		(525	)
Contingent purchase price liabilities	3		(34,108	)		(32,089	)

Change in Level 3 Fair Values of Contingent Purchase Price Liabilities

During the nine months ended September 30, 2020 and 2019, there were no transfers between the valuation hierarchy Levels 1, 2 and 3. The following table summarizes the change in Level 3 fair values of our contingent purchase price liabilities for the nine months ended September 30, 2020 and 2019 (pre-tax basis) (in thousands):

	2020			2019
Beginning balance – January 1	$	(32,089	)	$	(39,708	)
Additions from business acquisitions		(14,953	)		(10,150	)
Settlement of contingent purchase price liabilities		12,854			18,311
Change in fair value of contingencies		612			222
Change in net present value of contingencies		(532	)		(544	)
Ending balance – September 30	$	(34,108	)	$	(31,869	)