Other Income, Net (Tables)

3 Months Ended

Mar. 31, 2014

Other Income and Expenses [Abstract]

Other Income, Net

Other income, net consisted of the following:

	Three Months Ended March 31
(Thousands of Dollars)	2014			2013
Interest income	$	3,893		$	4,806
Other nonoperating income	1,116			1,255
Insurance policy expense	(1,808		)	(2,139		)
Other income, net	$	3,201		$	3,922