Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2018

Fair Value Disclosures [Abstract]

Carrying Value and Fair Value of Long-Term Debt

The following table sets forth carrying value and fair value of long-term debt:

	March 31, 2018				December 31, 2017
In thousands	Carrying Value		Fair Value		Carrying Value		Fair Value
Variable rate debt	$	196,588	$	196,588	$	171,200	$	171,200
Fixed-rate bonds		250,000		253,980		250,000		253,823
2.40% Term loan		7,481		7,637		7,710		7,889
2.05% Term loan		32,883		33,318		33,607		34,122
1.30% Term Loan		9,241		9,177		9,423		9,370
1.55% Term loan		11,324		11,229		11,390		11,320
Total	$	507,517	$	511,929	$	483,330	$	487,724