Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2017

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, 2017 and December 31, 2016 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, 2017			December 31, 2016
Deferred compensation plan assets	1	$	72,890		$	69,912
Corporate and municipal bonds	1	$	52,073		$	44,573
Interest rate swaps	2	$	676		$	529
Contingent purchase price liabilities	3	$	(32,422	)	$	(33,709	)

Change in Level 3 Fair Values of Contingent Purchase Price Liabilities

During the three months ended March 31, 2017 and 2016, 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 three months ended March 31, 2017 and 2016 (pre-tax basis) (in thousands):

	2017			2016
Beginning balance – January 1	$	(33,709	)	$	(24,817	)
Additions from business acquisitions		(1,661	)		(1,206	)
Settlement of contingent purchase price liabilities		3,564			2,335
Change in fair value of contingencies		(485	)		1,263
Change in net present value of contingencies		(131	)		(36	)
Ending balance – March 31	$	(32,422	)	$	(22,461	)