XML 45 R18.htm IDEA: XBRL DOCUMENT v2.4.0.6
Other Income, Net
3 Months Ended
Mar. 31, 2013
Other Income, Net [Abstract]  
Other Income, Net
9.
Other Income, Net

Other income, net consisted of the following:

   
Three Months Ended March 31
 
(Thousands of Dollars)
 
2013
  
2012
 
Interest income
 $914  $1,028 
Other nonoperating income
  882   568 
Insurance policy expense
  (219)  (564)
Other income, net
 $1,577  $1,032