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Lease Commitments (Tables)
12 Months Ended
Dec. 31, 2018
Leases [Abstract]  
Schedule of Rent Expense
Operating lease expense, including the PVNGS leases was:
 
PNMR
 
PNM
 
TNMP
 
(In thousands)
2018
$
37,959

 
$
33,085

 
$
4,351

2017
$
35,972

 
$
31,817

 
$
3,570

2016
$
37,432

 
$
32,843

 
$
3,748

Schedule of Future Minimum Operating Lease Payments
Future expected operating lease payments at December 31, 2018 are shown below:

 
PNMR
 
PNM
 
TNMP
 
(In thousands)
2019
$
31,772

 
$
27,691

 
$
3,664

2020
30,404

 
27,000

 
3,102

2021
29,012

 
26,462

 
2,324

2022
28,175

 
26,217

 
1,795

2023
18,868

 
17,447

 
1,279

Later years
43,489

 
42,329

 
1,150

   Total minimum lease payments
$
181,720

 
$
167,146

 
$
13,314