Other Income, Net (Tables)

6 Months Ended

Jun. 30, 2014

Other Income and Expenses [Abstract]

Other Income, Net

Other income, net consisted of the following:

	Three Months Ended June 30						Six Months Ended June 30
(Thousands of Dollars)	2014			2013			2014			2013
Interest income	$	1,292		$	1,505		$	5,185		$	6,311
Other nonoperating income	1,293			534			2,396			1,755
Insurance policy expense	(2,438		)	(1,407		)	(4,246		)	(3,546		)
Other nonoperating expense	(65		)	(219		)	(52		)	(185		)
Other income, net	$	82		$	413		$	3,283		$	4,335