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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)
 6 Months Ended
Jun. 30, 2013
Equity [Abstract]  
Schedule of changes in accumulated other comprehensive loss (AOCL)
The following tables summarize the changes in accumulated other comprehensive loss (AOCL) for the three and six months ended June 30, 2013 (in thousands):

 
Postretirement Liability Adjustment
 
Unrealized Gain (Loss) on Derivatives-Other
 
Unrealized Gain (Loss) on Available-for-Sale Securities
 
Other Comprehensive Income (Loss) of Affiliated Companies
 
Total
Balance at April 1, 2013 (a)
$
(23,437
)
 
$
(2,896
)
 
$
20

 
$
14

 
$
(26,299
)
   Other comprehensive income before reclassifications
—

 
—

 
(23
)
 
—

 
(23
)
   Amounts reclassified from AOCL (b)
—

 
66

 
—

 
22

 
88

Net current period other comprehensive income (loss)
—

 
66

 
(23
)
 
22

 
65

Balance at June 30, 2013 (a)
$
(23,437
)
 
$
(2,830
)
 
$
(3
)
 
$
36

 
$
(26,234
)


 
Postretirement Liability Adjustment
 
Unrealized Gain (Loss) on Derivatives-Other
 
Unrealized Gain (Loss) on Available-for-Sale Securities
 
Other Comprehensive Income (Loss) of Affiliated Companies
 
Total
Balance at January 1, 2013 (a)
$
(23,437
)
 
$
(2,962
)
 
$
294

 
$
(5,000
)
 
$
(31,105
)
   Other comprehensive income before reclassifications
—

 
—

 
192

 
—

 
192

   Amounts reclassified from AOCL (b)
—

 
132

 
(489
)
 
5,036

 
4,679

Net current period other comprehensive income (loss)
—

 
132

 
(297
)
 
5,036

 
4,871

Balance at June 30, 2013 (a)
$
(23,437
)
 
$
(2,830
)
 
$
(3
)
 
$
36

 
$
(26,234
)

(a) Determined using a combined statutory tax rate of 41%.
(b) See table below.
Reclassifications out of AOCL
The following table provides details about reclassifications out of AOCL for the three and six months ended June 30, 2013:

 
Amounts Reclassified from AOCL (in thousands)
 
Affected Line Item in the Condensed Consolidated Statements of Income
Three Months Ended
June 30, 2013
 
Six Months Ended
June 30, 2013
 
Unrealized Loss on Derivatives-Other - interest rate contracts designated as cash flow hedges
$
112

 
$
224

 
Interest Charges
   Income Taxes
(46
)
 
(92
)
 
Income Taxes (a)
 
$
66

 
$
132

 
 
 
 
 
 
 
 
Unrealized Gain on Available-for-Sale Securities
$
—

 
$
(827
)
 
Other Income
   Income Taxes
—

 
338

 
Income Taxes (a)
 
$
—

 
$
(489
)
 
 
 
 
 
 
 
 
Loss of Affiliated Companies
$
35

 
$
8,511

 
Equity in Loss of Affiliated Companies
   Income Taxes
(13
)
 
(3,475
)
 
Income Taxes (a)
 
$
22

 
$
5,036

 
 
 
 
 
 
 
 
Losses from reclassifications for the period net of tax
$
88

 
$
4,679