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Regulatory Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Regulatory Assets |  |
Current | $ 1,070 | $ 47,855
Non-Current | 470,664 | 491,007
Regulatory Liabilities |  |
Current | (15,591) | (1,703)
Non-Current | (467,413) | (466,143)
Public Service Company of New Mexico [Member] |  |
Regulatory Assets |  |
Current | 0 | 43,980
Non-Current | 342,910 | 357,045
Total regulatory assets | 342,910 | 401,025
Regulatory Liabilities |  |
Current | (15,591) | (1,703)
Non-Current | (434,863) | (425,481)
Total regulatory liabilities | (450,454) | (427,184)
Public Service Company of New Mexico [Member] | Fuel and Purchased Power Adjustment Clause [Member] |  |
Regulatory Liabilities |  |
Current | (11,410) | 0
Public Service Company of New Mexico [Member] | Other Current [Member] |  |
Regulatory Liabilities |  |
Current | (4,181) | (1,703)
Public Service Company of New Mexico [Member] | Cost of removal [Member] |  |
Regulatory Liabilities |  |
Non-Current | (284,015) | (277,148)
Public Service Company of New Mexico [Member] | Deferred income taxes [Member] |  |
Regulatory Liabilities |  |
Non-Current | (77,502) | (75,941)
Public Service Company of New Mexico [Member] | AROs [Member] |  |
Regulatory Liabilities |  |
Non-Current | (33,747) | (35,834)
Public Service Company of New Mexico [Member] | Renewable energy [Member] |  |
Regulatory Liabilities |  |
Non-Current | (23,697) | (24,854)
Public Service Company of New Mexico [Member] | AMS surcharge [Member] |  |
Regulatory Liabilities |  |
Non-Current | 0 | 0
Public Service Company of New Mexico [Member] | Nuclear spent fuel, Reimbursement [Member] |  |
Regulatory Liabilities |  |
Non-Current | (9,214) | (3,625)
Public Service Company of New Mexico [Member] | Pension and OPEB [Member] |  |
Regulatory Liabilities |  |
Non-Current | 0 | 0
Public Service Company of New Mexico [Member] | Other [Member] |  |
Regulatory Liabilities |  |
Non-Current | (6,688) | (8,079)
Public Service Company of New Mexico [Member] | Fuel and Purchased Power Adjustment Clause [Member] |  |
Regulatory Assets |  |
Current | 0 | 43,980
Public Service Company of New Mexico [Member] | Transmission cost recovery factor [Member] |  |
Regulatory Assets |  |
Current | 0 | 0
Public Service Company of New Mexico [Member] | Energy efficiency costs [Member] |  |
Regulatory Assets |  |
Current | 0 | 0
Public Service Company of New Mexico [Member] | CTC, including carrying charges[Member] |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Public Service Company of New Mexico [Member] | Coal mine reclamation costs [Member] |  |
Regulatory Assets |  |
Non-Current | 28,303 | 34,224
Public Service Company of New Mexico [Member] | Deferred income taxes [Member] |  |
Regulatory Assets |  |
Non-Current | 66,990 | 63,645
Public Service Company of New Mexico [Member] | Loss on reacquired debt [Member] |  |
Regulatory Assets |  |
Non-Current | 23,627 | 25,439
Public Service Company of New Mexico [Member] | Pension and OPEB [Member] |  |
Regulatory Assets |  |
Non-Current | 218,743 | 222,545
Public Service Company of New Mexico [Member] | AMS surcharge [Member] |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Public Service Company of New Mexico [Member] | Advanced meter retirement costs [Member] |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Public Service Company of New Mexico [Member] | Renewable energy [Member] |  |
Regulatory Assets |  |
Non-Current | 0 | 5,263
Public Service Company of New Mexico [Member] | Other [Member] |  |
Regulatory Assets |  |
Non-Current | 5,247 | 5,929
Texas-New Mexico Power Company [Member] |  |
Regulatory Assets |  |
Current | 1,070 | 3,875
Non-Current | 127,754 | 133,962
Total regulatory assets | 128,824 | 137,837
Regulatory Liabilities |  |
Current | 0 | 0
Non-Current | (32,550) | (40,662)
Total regulatory liabilities | (32,550) | (40,662)
Texas-New Mexico Power Company [Member] | Fuel and Purchased Power Adjustment Clause [Member] |  |
Regulatory Liabilities |  |
Current | 0 | 0
Texas-New Mexico Power Company [Member] | Other Current [Member] |  |
Regulatory Liabilities |  |
Current | 0 | 0
Texas-New Mexico Power Company [Member] | Cost of removal [Member] |  |
Regulatory Liabilities |  |
Non-Current | (26,859) | (29,391)
Texas-New Mexico Power Company [Member] | Deferred income taxes [Member] |  |
Regulatory Liabilities |  |
Non-Current | (3,283) | (3,923)
Texas-New Mexico Power Company [Member] | AROs [Member] |  |
Regulatory Liabilities |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company [Member] | Renewable energy [Member] |  |
Regulatory Liabilities |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company [Member] | AMS surcharge [Member] |  |
Regulatory Liabilities |  |
Non-Current | 0 | (5,227)
Texas-New Mexico Power Company [Member] | Nuclear spent fuel, Reimbursement [Member] |  |
Regulatory Liabilities |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company [Member] | Pension and OPEB [Member] |  |
Regulatory Liabilities |  |
Non-Current | (1,913) | (2,121)
Texas-New Mexico Power Company [Member] | Other [Member] |  |
Regulatory Liabilities |  |
Non-Current | (495) | 0
Texas-New Mexico Power Company [Member] | Fuel and Purchased Power Adjustment Clause [Member] |  |
Regulatory Assets |  |
Current | 0 | 0
Texas-New Mexico Power Company [Member] | Transmission cost recovery factor [Member] |  |
Regulatory Assets |  |
Current | 441 | 2,482
Texas-New Mexico Power Company [Member] | Energy efficiency costs [Member] |  |
Regulatory Assets |  |
Current | 629 | 1,393
Texas-New Mexico Power Company [Member] | CTC, including carrying charges[Member] |  |
Regulatory Assets |  |
Non-Current | 46,147 | 55,292
Texas-New Mexico Power Company [Member] | Coal mine reclamation costs [Member] |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company [Member] | Deferred income taxes [Member] |  |
Regulatory Assets |  |
Non-Current | 10,244 | 10,556
Texas-New Mexico Power Company [Member] | Loss on reacquired debt [Member] |  |
Regulatory Assets |  |
Non-Current | 35,405 | 36,703
Texas-New Mexico Power Company [Member] | Pension and OPEB [Member] |  |
Regulatory Assets |  |
Non-Current | 23,356 | 23,803
Texas-New Mexico Power Company [Member] | AMS surcharge [Member] |  |
Regulatory Assets |  |
Non-Current | 1,673 | 0
Texas-New Mexico Power Company [Member] | Advanced meter retirement costs [Member] |  |
Regulatory Assets |  |
Non-Current | 8,549 | 6,453
Texas-New Mexico Power Company [Member] | Renewable energy [Member] |  |
Regulatory Assets |  |
Non-Current | 0 | 0
Texas-New Mexico Power Company [Member] | Other [Member] |  |
Regulatory Assets |  |
Non-Current | $ 2,380 | $ 1,155

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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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