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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
 
$
(1,247
)
Losses reclassified from net accumulated other comprehensive loss
 
44

Net current period other comprehensive income
 
44

Accumulated other comprehensive loss at Sept. 30
 
$
(1,203
)

(Thousands of Dollars)
 
Gains and
Losses on Cash
Flow Hedges
Accumulated other comprehensive loss at Jan. 1
 
$
(1,332
)
Losses reclassified from net accumulated other comprehensive loss
 
129

Net current period other comprehensive income
 
129

Accumulated other comprehensive loss at June 30
 
$
(1,203
)


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
 
Losses on cash flow hedges:
 
 

 
 
 
Interest rate derivatives
 
$
68

(a) 
$
201

(a) 
Total, pre-tax
 
68

 
201

 
Tax benefit
 
(24
)
 
(72
)
 
Total amounts reclassified, net of tax
 
$
44

 
$
129

 

(a) 
Included in interest charges.