Other Income, Net (Tables)

9 Months Ended

Sep. 30, 2018

Other Income and Expenses [Abstract]

Other Income, Net

Other expense, net consisted of the following:

	Three Months Ended Sept. 30						Nine Months Ended Sept. 30
(Thousands of Dollars)	2018			2017			2018			2017
Interest income	$	271		$	138		$	412		$	342
Other nonoperating income	8			8			56			238
Other nonoperating expense	(4		)	(3		)	(11		)	(10		)
Insurance policy income (expense)	166			(48		)	72			(146		)
Benefits non-service cost	(1,223		)	(678		)	(2,180		)	(2,034		)
Other expense, net	$	(782	)	$	(583	)	$	(1,651	)	$	(1,610	)