Capitalized Interest (Tables)

3 Months Ended

Mar. 31, 2018

Interest Expense [Abstract]

Summary of Interest Incurred, Capitalized and Expensed

The following table sets forth details of interest incurred, capitalized and expensed:

	Three months ended March 31
In thousands	2018		2017
Interest cost incurred	$	5,591	$	4,597
Interest capitalized		396		589
Interest expense	$	5,195	$	4,008