Leasing Arrangements (Tables)

12 Months Ended

Dec. 31, 2012

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, 2012, are as follows:

	Capital		Operating
(Thousands)	Leases		Leases
2013	$	1,102	$	6,721
2014	1,069		4,982
2015	1,068		4,472
2016	1,066		4,152
2017	1,064		3,063
2018 and thereafter	5,766		14,992
Total minimum lease payments	11,135		$	38,382
Amounts representing interest	2,593
Present value of net minimum lease payments	$	8,542