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Regulatory Assets and Liabilities (Tables)
 12 Months Ended
Dec. 31, 2019
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,
 
2019
 
2018
 
2019
 
2018
Assets:
(In thousands)
Current:
 
 
 
 
 
 
 
FPPAC
$
7,373

 
$
4,104

 
$
—

 
$
—

Energy efficiency costs
—

 
430

 
—

 
—

 
7,373

 
4,534

 
—

 
—

Non-Current:
 
 
 
 
 
 
 
CTC, including carrying charges
—

 
—

 
7,412

 
17,744

Coal mine reclamation costs(3)
13,995

 
19,915

 
—

 
—

Deferred income taxes
66,296

 
63,369

 
8,997

 
9,309

Loss on reacquired debt
19,426

 
21,085

 
30,212

 
31,510

Pension and OPEB(1)
214,771

 
227,400

 
27,947

 
26,972

Shutdown of SJGS Units 2 and 3
113,508

 
119,785

 
—

 
—

Hurricane recovery costs(2)
—

 
—

 
1,041

 
1,551

AMS surcharge
—

 
—

 
25,015

 
31,435

AMS retirement and other costs
—

 
—

 
15,542

 
16,489

Renewable energy costs
643

 
—

 
—

 
—

Other
6,828

 
9,349

 
5,297

 
3,017

 
435,467

 
460,903

 
121,463

 
138,027

Total regulatory assets
$
442,840

 
$
465,437

 
$
121,463

 
$
138,027

 
 
 
 
 
 
 
 
Liabilities:
 
Current:
 
 
 
 
 
 
 
Renewable energy rider
$
—

 
$
(4,475
)
 
$
—

 
$
—

Other
(371
)
 
(1,500
)
 
(134
)
 
(3,471
)
 
(371
)
 
(5,975
)
 
(134
)
 
(3,471
)
Non-Current:
 
 
 
 
 
 
 
Cost of removal
(271,025
)
 
(263,597
)
 
(46,091
)
 
(29,637
)
Deferred income taxes
(374,122
)
 
(407,978
)
 
(131,871
)
 
(143,745
)
PVNGS ARO
(11,341
)
 
(18,397
)
 
—

 
—

Renewable energy tax benefits
(19,069
)
 
(20,226
)
 
—

 
—

Accelerated depreciation SNCRs
(7,758
)
 
(3,690
)
 
—

 
—

Pension and OPEB
—

 
—

 
(4,775
)
 
(3,940
)
Other
(83
)
 
(83
)
 
(108
)
 
(136
)
 
(683,398
)
 
(713,971
)
 
(182,845
)
 
(177,458
)
Total regulatory liabilities
$
(683,769
)
 
$
(719,946
)
 
$
(182,979
)
 
$
(180,929
)

(1) Includes $0.7 million for certain PNM pension costs as described in Note 11
(2) Amount shown is net of amounts owed under the PUCT’s January 25, 2018 order as described in Note 17
(3) Includes $9.4 million in coal mine reclamation costs related to PNM’s planned retirement of SJGS in 2022 as described in Note 16