Other Income, Net (Tables)

6 Months Ended

Jun. 30, 2013

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)	2013			2012			2013			2012
Interest income	$	843		$	772		$	1,757		$	1,800
Other nonoperating income	637			798			1,519			1,366
Insurance policy expense	(158		)	(20		)	(377		)	(584		)
Other income, net	$	1,322		$	1,550		$	2,899		$	2,582