Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Fair Values and Related Carrying Values of Debt

At December 31, 2016 and 2015, the fair values and related carrying values of debt, including current maturities, were as follows (the fair value and carrying value amounts are presented without regard to unamortized debt issuance costs of $1,141,000 and $1,269,000 as of December 31, 2016 and 2015, respectively):

(In thousands)	December 31
	2016		2015
Fair value	$	316,364	$	331,183
Carrying value		318,154		332,623

Financial Assets and Liabilities Measured on a Recurring Basis at Fair Value

The following tables present financial assets and liabilities measured on a recurring basis at fair value as of December 31, 2016 and 2015, and the level within the fair value hierarchy in which the fair value measurement falls:

(In thousands)	December 2016		Level 1		Level 2		Level 3
Mutual fund assets	$	24,055	$	24,055	$	—	$	—
Derivative assets:
Foreign currency contracts		453		—		453		—
Total assets at fair value	$	24,508	$	24,055	$	453	$	—
Derivative liabilities:
Foreign currency contracts	$	469	$	—	$	469	$	—

(In thousands)	December 2015		Level 1		Level 2		Level 3
Mutual fund assets	$	20,910	$	20,910	$	—	$	—
Derivative assets:
Foreign currency contracts		112		—		112		—
Total assets at fair value	$	21,022	$	20,910	$	112	$	—
Derivative liabilities:
Foreign currency contracts	$	305	$	—	$	305	$	—
Interest rate contracts		53		—		53		—
Total liabilities at fair value	$	358	$	—	$	358	$	—