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Regulatory Assets and Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Regulatory Assets |  |
Current | $ 7,373 | $ 4,534
Non-Current | 556,930 | 598,930
Regulatory Liabilities |  |
Current | (505) | (9,446)
Non-Current | (866,243) | (891,428)
Public Service Company of New Mexico |  |
Regulatory Assets |  |
Current | 7,373 | 4,534
Non-Current | 435,467 | 460,903
Total regulatory assets | 442,840 | 465,437
Regulatory Liabilities |  |
Current | (371) | (5,975)
Non-Current | (683,398) | (713,971)
Total regulatory liabilities | (683,769) | (719,946)
Public Service Company of New Mexico | Renewable energy rider |  |
Regulatory Liabilities |  |
Current | 0 | (4,475)
Public Service Company of New Mexico | Other |  |
Regulatory Liabilities |  |
Current | (371) | (1,500)
Public Service Company of New Mexico | Cost of removal |  |
Regulatory Liabilities |  |
Non-Current | (271,025) | (263,597)
Public Service Company of New Mexico | Deferred income taxes |  |
Regulatory Liabilities |  |
Non-Current | (374,122) | (407,978)
Public Service Company of New Mexico | PVNGS ARO |  |
Regulatory Liabilities |  |
Non-Current | (11,341) | (18,397)
Public Service Company of New Mexico | Renewable energy tax benefits |  |
Regulatory Liabilities |  |
Non-Current | (19,069) | (20,226)
Public Service Company of New Mexico | Accelerated depreciation SNCRs |  |
Regulatory Liabilities |  |
Non-Current | (7,758) | (3,690)
Public Service Company of New Mexico | Pension and OPEB |  |
Regulatory Liabilities |  |
Non-Current | 0 | 0
Public Service Company of New Mexico | Other |  |
Regulatory Liabilities |  |
Non-Current | (83) | (83)
Public Service Company of New Mexico | FPPAC |  |
Regulatory Assets |  |
Current | 7,373 | 4,104
Public Service Company of New Mexico | Energy efficiency costs |  |
Regulatory Assets |  |
Current | 0 | 430
Public Service Company of New Mexico | CTC, including carrying charges |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Public Service Company of New Mexico | Coal mine reclamation costs |  |
Regulatory Assets |  |
Non-Current | 13,995 | 19,915
Public Service Company of New Mexico | Deferred income taxes |  |
Regulatory Assets |  |
Non-Current | 66,296 | 63,369
Public Service Company of New Mexico | Loss on reacquired debt |  |
Regulatory Assets |  |
Non-Current | 19,426 | 21,085
Public Service Company of New Mexico | Pension and OPEB |  |
Regulatory Assets |  |
Non-Current | 214,771 | 227,400
Public Service Company of New Mexico | Shutdown of SJGS Units 2 and 3 |  |
Regulatory Assets |  |
Non-Current | 113,508 | 119,785
Public Service Company of New Mexico | Hurricane recovery costs |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Public Service Company of New Mexico | AMS surcharge |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Public Service Company of New Mexico | AMS retirement and other costs |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Public Service Company of New Mexico | Renewable energy tax benefits |  |
Regulatory Assets |  |
Non-Current | 643 | 0
Public Service Company of New Mexico | Other |  |
Regulatory Assets |  |
Non-Current | 6,828 | 9,349
Texas-New Mexico Power Company |  |
Regulatory Assets |  |
Current | 0 | 0
Non-Current | 121,463 | 138,027
Total regulatory assets | 121,463 | 138,027
Regulatory Liabilities |  |
Current | (134) | (3,471)
Non-Current | (182,845) | (177,458)
Total regulatory liabilities | (182,979) | (180,929)
Texas-New Mexico Power Company | Renewable energy rider |  |
Regulatory Liabilities |  |
Current | 0 | 0
Texas-New Mexico Power Company | Other |  |
Regulatory Liabilities |  |
Current | (134) | (3,471)
Texas-New Mexico Power Company | Cost of removal |  |
Regulatory Liabilities |  |
Non-Current | (46,091) | (29,637)
Texas-New Mexico Power Company | Deferred income taxes |  |
Regulatory Liabilities |  |
Non-Current | (131,871) | (143,745)
Texas-New Mexico Power Company | PVNGS ARO |  |
Regulatory Liabilities |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company | Renewable energy tax benefits |  |
Regulatory Liabilities |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company | Accelerated depreciation SNCRs |  |
Regulatory Liabilities |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company | Pension and OPEB |  |
Regulatory Liabilities |  |
Non-Current | (4,775) | (3,940)
Texas-New Mexico Power Company | Other |  |
Regulatory Liabilities |  |
Non-Current | (108) | (136)
Texas-New Mexico Power Company | FPPAC |  |
Regulatory Assets |  |
Current | 0 | 0
Texas-New Mexico Power Company | Energy efficiency costs |  |
Regulatory Assets |  |
Current | 0 | 0
Texas-New Mexico Power Company | CTC, including carrying charges |  |
Regulatory Assets |  |
Non-Current | 7,412 | 17,744
Texas-New Mexico Power Company | Coal mine reclamation costs |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company | Deferred income taxes |  |
Regulatory Assets |  |
Non-Current | 8,997 | 9,309
Texas-New Mexico Power Company | Loss on reacquired debt |  |
Regulatory Assets |  |
Non-Current | 30,212 | 31,510
Texas-New Mexico Power Company | Pension and OPEB |  |
Regulatory Assets |  |
Non-Current | 27,947 | 26,972
Texas-New Mexico Power Company | Shutdown of SJGS Units 2 and 3 |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company | Hurricane recovery costs |  |
Regulatory Assets |  |
Non-Current | 1,041 | 1,551
Texas-New Mexico Power Company | AMS surcharge |  |
Regulatory Assets |  |
Non-Current | 25,015 | 31,435
Texas-New Mexico Power Company | AMS retirement and other costs |  |
Regulatory Assets |  |
Non-Current | 15,542 | 16,489
Texas-New Mexico Power Company | Renewable energy tax benefits |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company | Other |  |
Regulatory Assets |  |
Non-Current | 5,297 | 3,017
Accounting Standards Update 2017-07 | Public Service Company of New Mexico |  |
Regulatory Liabilities |  |
Non-service cost deferred as regulatory assets | 700 |
Increase in coal mine decommissioning liability | Public Service Company of New Mexico |  |
Regulatory Liabilities |  |
Net expense | $ 800 |
Increase in coal mine decommissioning liability | Underground | Public Service Company of New Mexico |  |
Regulatory Liabilities |  |
Net expense |  | $ 9,400

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