Leasing Arrangements (Tables)

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

Future estimated minimum payments under capital leases and non-cancelable operating leases

The future estimated minimum payments under capital leases and non-cancelable operating leases with initial lease terms in excess of one year at December 31, 2018, are as follows:

	Capital		Operating
(Thousands)	Leases		Leases
2019	$	2,172	$	7,287
2020	2,172		6,525
2021	2,172		4,966
2022	2,172		3,790
2023	1,463		3,532
2024 and thereafter	21,056		4,287
Total minimum lease payments	31,207		$	30,387
Amounts representing interest	19,338
Present value of net minimum lease payments	$	11,869