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Accumulated Other Comprehensive Income (Loss) (Notes)
 3 Months Ended
Mar. 31, 2013
Equity [Abstract]  
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)

Information regarding accumulated other comprehensive income (loss) for the three months ended March 31, 2013 is as follows:
 
Accumulated Other Comprehensive Income (Loss)
 
Unrealized
 
 
 
Fair Value
 
 
 
Gain on
 
Pension
 
Adjustment
 
 
 
Investment
 
Liability
 
for Cash Flow
 
 
 
Securities
 
Adjustment
 
Hedges
 
Total
 
(In thousands)
PNMR
 
 
 
 
 
 
 
Balance at December 31, 2012
$
16,406

 
$
(97,820
)
 
$
(216
)
 
$
(81,630
)
 Amounts reclassified from AOCI (pre-tax)
(1,336
)
 
1,591

 
48

 
303

Income tax impact of amounts reclassified
529

 
(631
)
 
(17
)
 
(119
)
 Other OCI changes (pre-tax)
7,858

 
—

 
12

 
7,870

Income tax impact of other OCI changes
(3,111
)
 
—

 
(4
)
 
(3,115
)
Net change after income taxes
3,940

 
960

 
39

 
4,939

Balance at March 31, 2013
$
20,346

 
$
(96,860
)
 
$
(177
)
 
$
(76,691
)
PNM
 
 
 
 
 
 
 
Balance at December 31, 2012
$
16,406

 
$
(97,820
)
 
$
—

 
$
(81,414
)
 Amounts reclassified from AOCI (pre-tax)
(1,336
)
 
1,591

 
—

 
255

Income tax impact of amounts reclassified
529

 
(631
)
 
—

 
(102
)
 Other OCI changes (pre-tax)
7,858

 
—

 
—

 
7,858

Income tax impact of other OCI changes
(3,111
)
 
—

 
—

 
(3,111
)
Net change after income taxes
3,940

 
960

 
—

 
4,900

Balance at March 31, 2013
$
20,346

 
$
(96,860
)
 
$
—

 
$
(76,514
)
TNMP
 
 
 
 
 
 
 
Balance at December 31, 2012
$
—

 
$
—

 
$
(216
)
 
$
(216
)
 Amounts reclassified from AOCI (pre-tax)
—

 
—

 
48

 
48

Income tax impact of amounts reclassified
—

 
—

 
(17
)
 
(17
)
 Other OCI changes (pre-tax)
—

 
—

 
12

 
12

Income tax impact of other OCI changes
—

 
—

 
(4
)
 
(4
)
Net change after income taxes
—

 
—

 
39

 
39

Balance at March 31, 2013
$
—

 
$
—

 
$
(177
)
 
$
(177
)


Pre-tax amounts reclassified from AOCI related to "Unrealized Gain on Investment Securities" are included in "Gains on investments held by NDT" in the Condensed Consolidated Statements of Earnings. Pre-tax amounts reclassified from AOCI related to "Pension Liability Adjustment " are reclassified to "Operating Expenses - Administrative and general" in the Condensed Consolidated Statements of Earnings. Approximately 15.0% of the amount reclassified is then capitalized into construction work in process and approximately 2.5% is capitalized into other accounts. Pre-tax amounts reclassified from AOCI related to "Fair
Value Adjustment for Cash Flow Hedges" are reclassified to "Interest Charges" in the Condensed Consolidated Statements of Earnings. An insignificant amount is then capitalized as AFUDC. The income tax impacts of all amounts reclassified from AOCI are included in "Income Taxes" in the Condensed Consolidated Statements of Earnings.