Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]

Schedule of Financial Instruments not Carried at Fair Value

The following table provides the carrying value and fair value of financial instruments that are not carried at fair value at December 31, 2016 and 2015:

	2016				2015
In thousands	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt:
Level 1	$	113,203	$	170,935	$	111,058	$	140,156
Level 2	303,855		279,582		329,763		305,681
Total	$	417,058	$	450,517	$	440,821	$	445,837