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Other Comprehensive Income
 6 Months Ended
Jun. 30, 2014
Stockholders' Equity Note [Abstract]  
Other Comprehensive Income
Other Comprehensive Income

Changes in accumulated other comprehensive loss, net of tax, for the three and six months ended June 30, 2014 and 2013 were as follows:
 
 
Gains and Losses on
Cash Flow Hedges
(Thousands of Dollars)
 
Three Months Ended June 30, 2014
 
Three Months Ended June 30, 2013
Accumulated other comprehensive loss at April 1
 
$
(23,461
)
 
$
(22,982
)
Other comprehensive gain (loss) before reclassifications
 
5

 
(20
)
Gains reclassified from net accumulated other comprehensive loss
 
(117
)
 
(118
)
Net current period other comprehensive loss
 
(112
)
 
(138
)
Accumulated other comprehensive loss at June 30
 
$
(23,573
)
 
$
(23,120
)

 
 
Gains and Losses on
Cash Flow Hedges
(Thousands of Dollars)
 
Six Months Ended June 30, 2014
 
Six Months Ended June 30, 2013
Accumulated other comprehensive loss at Jan. 1
 
$
(23,338
)
 
$
(22,871
)
Other comprehensive gain (loss) before reclassifications
 
2

 
(13
)
Gains reclassified from net accumulated other comprehensive loss
 
(237
)
 
(236
)
Net current period other comprehensive loss
 
(235
)
 
(249
)
Accumulated other comprehensive loss at June 30
 
$
(23,573
)
 
$
(23,120
)


Reclassifications from accumulated other comprehensive loss for the three and six months ended June 30, 2014 and 2013 were as follows:
 
 
Amounts Reclassified from Accumulated
Other Comprehensive Loss
 
(Thousands of Dollars)
 
Three Months Ended June 30, 2014
 
Three Months Ended June 30, 2013
 
(Gains) losses on cash flow hedges:
 
 
 
 
 
Interest rate derivatives
 
$
(182
)
(a) 
$
(182
)
(a) 
Vehicle fuel derivatives
 
(7
)
(b) 
(7
)
(b) 
Total, pre-tax
 
(189
)
 
(189
)
 
Tax expense
 
72

 
71

 
Total amounts reclassified, net of tax
 
$
(117
)
 
$
(118
)
 
 
 
Amounts Reclassified from Accumulated
Other Comprehensive Loss
 
(Thousands of Dollars)
 
Six Months Ended June 30, 2014
 
Six Months Ended June 30, 2013
 
(Gains) losses on cash flow hedges:
 
 
 
 
 
Interest rate derivatives
 
$
(362
)
(a) 
$
(362
)
(a) 
Vehicle fuel derivatives
 
(20
)
(b) 
(19
)
(b) 
Total, pre-tax
 
(382
)
 
(381
)
 
Tax expense
 
145

 
145

 
Total amounts reclassified, net of tax
 
$
(237
)
 
$
(236
)
 

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