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Regulatory Assets and Liabilities (Tables)
 12 Months Ended
Dec. 31, 2016
Regulated Operations [Abstract]  
Schedule of Regulatory Assets and Liabilities
Regulatory assets and liabilities reflected in the Consolidated Balance Sheets are presented below.
 
 
PNM
 
TNMP
 
December 31,
 
December 31,
 
2016
 
2015
 
2016
 
2015
Assets:
(In thousands)
Current:
 
 
 
 
 
 
 
FPPAC
$
1,451

 
$
—

 
$
—

 
$
—

Energy efficiency costs
1,991

 
—

 
413

 
629

Other
—

 
—

 
—

 
441

 
3,442

 
—

 
413

 
1,070

Non-Current:
 
 
 
 
 
 
 
CTC, including carrying charges
—

 
—

 
36,328

 
46,147

Coal mine reclamation costs
22,383

 
28,303

 
—

 
—

Deferred income taxes
62,918

 
66,990

 
9,932

 
10,244

Loss on reacquired debt
24,404

 
23,627

 
34,107

 
35,405

Pension and OPEB
249,286

 
218,743

 
27,661

 
23,356

AMS surcharge
—

 
—

 
14,669

 
1,673

AMS retirement costs
—

 
—

 
11,086

 
8,549

Other
6,422

 
5,247

 
2,027

 
2,380

 
365,413

 
342,910

 
135,810

 
127,754

Total regulatory assets
$
368,855

 
$
342,910

 
$
136,223

 
$
128,824

 
 
 
 
 
 
 
 
 
PNM
 
TNMP
 
December 31,
 
December 31,
 
2016
 
2015
 
2016
 
2015
Liabilities:
(In thousands)
Current:
 
 
 
 
 
 
 
FPPAC
$
—

 
$
(11,410
)
 
$
—

 
$
—

Renewable energy rider
(3,411
)
 
(2,584
)
 
—

 
—

Other
(106
)
 
(1,597
)
 
(92
)
 
—

 
(3,517
)
 
(15,591
)
 
(92
)
 
—

Non-Current:
 
 
 
 
 
 
 
Cost of removal
(297,087
)
 
(284,015
)
 
(26,900
)
 
(26,859
)
Deferred income taxes
(62,920
)
 
(77,502
)
 
(2,644
)
 
(3,283
)
PVNGS ARO
(30,621
)
 
(33,747
)
 
—

 
—

Renewable energy tax benefits
(22,540
)
 
(23,697
)
 
—

 
—

Nuclear spent fuel reimbursements
(8,875
)
 
(9,214
)
 
—

 
—

Pension and OPEB
—

 
—

 
(1,955
)
 
(1,913
)
Other
(1,658
)
 
(6,688
)
 
(449
)
 
(495
)
 
(423,701
)
 
(434,863
)
 
(31,948
)
 
(32,550
)
Total regulatory liabilities
$
(427,218
)
 
$
(450,454
)
 
$
(32,040
)
 
$
(32,550
)