Other Income (Expense), Net (Tables)

3 Months Ended

Mar. 31, 2015

Other Income and Expenses [Abstract]

Other Income (Expense), Net

Other income, net consisted of the following:

	Three Months Ended March 31
(Thousands of Dollars)	2015			2014
Interest income	$	4,238		$	3,893
Other nonoperating income	968			1,116
Insurance policy expense	(2,045		)	(1,808		)
Other income, net	$	3,161		$	3,201