Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value Assets and Liabilities Measured on Recurring Basis

Assets measured at fair value on a recurring basis as of December 31, 2017 and 2016 are as follows (amounts in thousands):

December 31, 2017	Level 1 (1)		Level 2 (2)	Level 3 (3)	Total
Assets:
Deferred compensation plan assets (mutual funds)	$	1,323	—	—	1,323
December 31, 2016	Level 1 (1)		Level 2 (2)	Level 3 (3)	Total
Assets:
Deferred compensation plan assets (mutual funds)	$	1,477	—	—	1,477
(1) Quoted prices in active markets for identical assets
(2) Observable inputs other than quoted prices in active markets for identical assets
(3) Inputs that are generally unobservable and not corroborated by market data

Fair Value, by Balance Sheet Grouping

The carrying amounts and approximate fair values of our current and long-term debt, excluding capital leases at December 31, 2017 and 2016 are as follows (amounts in thousands):

	December 31, 2017			December 31, 2016
	Carrying Amount		Fair Value	Carrying Amount	Fair Value
Current and long-term debt	$	1,323,317	1,379,850	1,280,133	1,317,222