Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 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 March 31, 2020 and December 31, 2019 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	March 31, 2020			December 31, 2019
Deferred compensation plan assets	1	$	92,613		$	106,851
Corporate and municipal bonds	1		45,848			60,659
Deferred compensation plan liabilities	1		(92,613	)		(106,851	)
Interest rate swaps, net	2		(1,392	)		(525	)
Contingent purchase price liabilities	3		(32,681	)		(32,089	)

Change in Level 3 Fair Values of Contingent Purchase Price Liabilities

The following table summarizes the change in Level 3 fair values of our contingent purchase price liabilities for the three months ended March 31, 2020 and 2019 (pre-tax basis, in thousands):

	2020			2019
Beginning balance – January 1	$	(32,089	)	$	(39,708	)
Additions from business acquisitions		(4,670	)		(1,806	)
Settlement of contingent purchase price liabilities		3,394			3,685
Change in fair value of contingencies		875			502
Change in net present value of contingencies		(191	)		(221	)
Ending balance – March 31	$	(32,681	)	$	(37,548	)