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Other Income (Expense), Net
 9 Months Ended
Sep. 30, 2015
Other Income and Expenses [Abstract]  
Other Income (Expense), Net
Other Income (Expense), Net

Other income (expense), net consisted of the following:
 
Three Months Ended Sept. 30
 
Nine Months Ended Sept. 30
(Thousands of Dollars)
2015
 
2014
 
2015
 
2014
Interest income
$
38

 
$
73

 
$
83

 
$
313

Other nonoperating income
—

 
1

 
—

 
1

Insurance policy income (expense)
221

 
(8
)
 
166

 
(336
)
Other nonoperating expense
(156
)
 
—

 
(46
)
 
—

Other income (expense), net
$
103

 
$
66

 
$
203

 
$
(22
)