Fair Value Measurement and Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Liabilities Carried at Fair Value Measured on Recurring Basis

The following table provides the liabilities carried at fair value measured on a recurring basis as of June 30, 2017, which are included in other current liabilities on the Condensed Consolidated Balance sheet:

			Fair Value Measurements at June 30, 2017 Using
In thousands	Total Carrying Value at June 30, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Interest rate swap agreements	$	2,476	$	—	$	2,476	$	—
Total	$	2,476	$	—	$	2,476	$	—

The following table provides the liabilities carried at fair value measured on a recurring basis as of December 31, 2016, which is included in other current liabilities on the Condensed Consolidated Balance sheet:

			Fair Value Measurements at December 31, 2016 Using
In thousands	Total Carrying Value at December 31, 2016		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Interest rate swap agreements	$	3,888	$	—	$	3,888	$	—
Total	$	3,888	$	—	$	3,888	$	—

Estimated Fair Values and Related Carrying Values of Financial Instruments

The estimated fair values and related carrying values of the Company’s financial instruments are as follows:

	June 30, 2017				December 31, 2016
In thousands	Carry Value		Fair Value		Carry Value		Fair Value
Interest rate swap agreement	$	2,476	$	2,476	$	3,888	$	3,888
4.375% Senior Notes	248,438		266,308		248,310		260,265
3.45% Senior Notes	747,580		742,808		747,474		719,273