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Other Comprehensive Income
 9 Months Ended
Sep. 30, 2013
Stockholders' Equity Note [Abstract]  
Other Comprehensive Income
Other Comprehensive Income

Changes in accumulated other comprehensive loss, net of tax, for the three and nine months ended Sept. 30, 2013 were as follows:
(Thousands of Dollars)
 
Gains and
Losses on Cash
Flow Hedges
Accumulated other comprehensive loss at July 1
 
$
(23,120
)
Other comprehensive gain before reclassifications
 
11

Gains reclassified from net accumulated other comprehensive loss
 
(119
)
Net current period other comprehensive loss
 
(108
)
Accumulated other comprehensive loss at Sept. 30
 
$
(23,228
)
(Thousands of Dollars)
 
Gains and
Losses on Cash
Flow Hedges
Accumulated other comprehensive loss at Jan. 1
 
$
(22,871
)
Other comprehensive loss before reclassifications
 
(2
)
Gains reclassified from net accumulated other comprehensive loss
 
(355
)
Net current period other comprehensive loss
 
(357
)
Accumulated other comprehensive loss at Sept. 30
 
$
(23,228
)


Reclassifications from accumulated other comprehensive loss for the three and nine months ended Sept. 30, 2013 were as follows:
 
 
Amounts Reclassified from
Accumulated Other
Comprehensive Loss
 
(Thousands of Dollars)
 
Three Months Ended Sept. 30, 2013
 
Nine Months Ended Sept. 30, 2013
 
(Gains) losses on cash flow hedges:
 
 

 
 
 
Interest rate derivatives
 
$
(184
)
(a) 
$
(546
)
(a) 
Vehicle fuel derivatives
 
(11
)
(b) 
(30
)
(b) 
Total, pre-tax
 
(195
)
 
(576
)
 
Tax expense
 
76

 
221

 
Total amounts reclassified, net of tax
 
$
(119
)
 
$
(355
)
 

(a) 
Included in interest charges.
(b) 
Included in O&M expenses.