Fair Value Measurements and Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Fair Value Assets and Liabilities Measured on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis as of December 31, 2015 and 2014 are as follows (amounts in thousands):

December 31, 2015	Level 1 (1)		Level 2 (2)	Level 3 (3)	Total
Assets:
Deferred compensation plan assets (mutual funds)	$	1,728	—	—	1,728
December 31, 2014	Level 1 (1)		Level 2 (2)	Level 3 (3)	Total
Assets:
Deferred compensation plan assets (mutual funds)	$	2,068	—	—	2,068
(1) Quoted prices in active markets for identical assets or liabilities
(2) Observable inputs other than quoted prices in active markets for identical assets and liabilities
(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, 2015 and 2014 are as follows (amounts in thousands):

	December 31, 2015			December 31, 2014
	Carrying Amount		Fair Value	Carrying Amount	Fair Value
Current and long-term debt	$	1,293,296	1,314,864	1,036,678	1,055,952