Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2017

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 December 31, 2017 and December 31, 2016. The Company’s assets measured at fair value on a recurring basis at December 31, were as follows (in thousands):

	December 31, 2017		Markets for Identical Assets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Deferred compensation plan investments	$	25,055	$	25,055	$	—	$	—
Total assets measured at fair value	$	25,055	$	25,055	$	—	$	—
	December 31, 2016		Markets for Identical Assets (Level 1)		Observable Inputs (Level 2)		Unobservable Inputs (Level 3)
Deferred compensation plan investments	$	22,204	$	22,204	$	—	$	—
Total assets measured at fair value	$	22,204	$	22,204	$	—	$	—