Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The following table summarizes the fair value balances (in thousands):

	Fair Value Measurement at December 31, 2018
	Total		Level 1		Level 2		Level 3
Assets:
Deferred compensation assets (1)	$	42,161	$	—	$	42,161	$	—
5 year interest rate swap	135		—		135		—
	$	42,296	$	—	$	42,296	$	—
Liabilities:
Deferred compensation plan	$	33,287	$	—	$	33,287	$	—
10 year interest rate swap	70		—		70		—
	$	33,357	$	—	$	33,357	$	—

	Fair Value Measurement at December 31, 2017
	Total		Level 1		Level 2		Level 3
Assets:
Deferred compensation assets (1)	$	46,145	$	—	$	46,145	$	—
5 year interest rate swap	70		—		70		—
	$	46,215	$	—	$	46,215	$	—
Liabilities:
Deferred compensation plan	$	37,280	$	—	$	37,280	$	—
10 year interest rate swap	492		—		492		—
	$	37,772	$	—	$	37,772	$	—
(1) Deferred compensation assets consist of the cash surrender value of life insurance policies and are intended to assist in the funding of the deferred compensation arrangements.