Other Income, Net (Tables)

3 Months Ended

Mar. 31, 2018

Other Income and Expenses [Abstract]

Other Income, Net

Other (expense), net consisted of the following:

	Three Months Ended March 31
(Thousands of Dollars)	2018			2017
Other nonoperating income	$	2		$	—
Benefits non-service cost	(636		)	(749		)
Interest (expense) income	(58		)	45
Insurance policy expense	(12		)	(12		)
Other nonoperating expense	—			(2		)
Other (expense), net	$	(704	)	$	(718	)