Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on Recurring Basis

The Company had no liabilities required to be measured at fair value at June 30, 2018 and December 31, 2017. The Company’s assets measured at fair value on a recurring basis at June 30, 2018 and December 31, 2017, were as follows (in thousands):

			Markets for		Observable		Unobservable
	June 30,		Identical Assets		Inputs		Inputs
	2018		(Level 1)		(Level 2)		(Level 3)
Deferred compensation plan investments	$	25,420	$	25,420	$	—	$	—
Total assets measured at fair value	$	25,420	$	25,420	$	—	$	—
			Markets for		Observable		Unobservable
	December 31,		Identical Assets		Inputs		Inputs
	2017		(Level 1)		(Level 2)		(Level 3)
Deferred compensation plan investments	$	25,055	$	25,055	$	—	$	—
Total assets measured at fair value	$	25,055	$	25,055	$	—	$	—