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v3.3.1.900

Variable Interest Entities (Details) $ in Thousands | 3 Months Ended | 7 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2015 | Jul. 16, 2014 USD ($) | Dec. 31, 2015 USD ($) InstitutionalInvestors MW | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Jul. 17, 2014 USD ($) | Oct. 08, 2013 USD ($) | May. 30, 2008 USD ($)
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |  |  |  |  |
Current assets |  |  | $ 385,570 | $ 406,434 |  |  |  |
Total assets |  |  | 6,009,328 | 5,790,237 | $ 5,426,858 |  |  |
Current liabilities |  |  | 641,120 | 704,087 |  |  |  |
Owners’ equity – non-controlling interest |  |  | 71,407 | 73,546 |  |  |  |
Net Income (Loss) Attributable to Noncontrolling Interest |  |  | $ 14,910 | 14,127 | 14,521 |  |  |
Public Service Company of New Mexico [Member] |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |
Number of different institutional investors of trust lessors | InstitutionalInvestors |  |  | 5 |  |  |  |  |
Accrued lease payments |  |  | $ 28,496 |  |  |  |  |
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |  |  |  |  |
Current assets |  |  | 357,757 | 368,988 |  |  |  |
Total assets |  |  | 4,599,344 | 4,453,114 |  |  |  |
Current liabilities |  |  | 316,921 | 415,501 |  |  |  |
Owners’ equity – non-controlling interest |  |  | 71,407 | 73,546 |  |  |  |
Net Income (Loss) Attributable to Noncontrolling Interest |  |  | $ 14,910 | 14,127 | 14,521 |  |  |
Public Service Company of New Mexico [Member] | Delta [Member] |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |
Long term contract for purchase of electric power fixed costs |  | $ 3,500 |  |  | 6,400 |  |  |
Long term contract for purchase of electric power variable charges |  | 600 |  |  | 1,800 |  |  |
Payments to acquire businesses, net |  | $ 22,800 |  |  |  |  |  |
Project financing debt, amount at closing |  |  |  |  |  | $ 14,600 |  |
Recorded plant in service |  |  |  |  |  | 58,100 |  |
Accumulated depreciation |  |  |  |  |  | 23,500 |  |
Current assets |  |  |  |  |  | 3,600 |  |
Deferred charges |  |  |  |  |  | 3,400 |  |
Current liabilities |  |  |  |  |  | 300 |  |
Non-current regulatory liabilities |  |  |  |  |  | $ 3,400 |  |
Valencia [Member] | Public Service Company of New Mexico [Member] |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |
Number of mega watts purchased (in megawatts) | MW |  |  | 158 |  |  |  |  |
Power plant total construction costs |  |  |  |  |  |  |  | $ 90,000
Long term contract for purchase of electric power fixed costs |  |  | $ 17,500 | 19,100 | 18,900 |  |  |
Long term contract for purchase of electric power variable charges |  |  | $ 1,500 | 1,200 | 1,200 |  |  |
Long term contract option to purchase, purchase price - percentage of adjusted NBV |  |  | 50.00% |  |  |  |  |
Long term contract option to purchase, purchase price - percentage of FMV | 50.00% |  |  |  |  |  |  |
Long term contract option to purchase, number of days to set FMV |  |  | 60 days |  |  |  |  |
Long term contract option to purchase, estimated purchase price |  |  |  |  |  |  | $ 85,000 |
Long term contract option to purchase, approximate approval period |  |  | 15 months |  |  |  |  |
Long term contract option to purchase, ownership percentage |  |  | 50.00% |  |  |  |  |
Number of years the operating licenses for plants were extended |  |  | 20 years |  |  |  |  |
Variable Interest Entity, Statement Of Operation [Abstract] |  |  |  |  |  |  |  |
Operating revenues |  |  | $ 20,687 | 20,247 | 20,166 |  |  |
Operating expenses |  |  | (5,777) | (6,120) | (5,645) |  |  |
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] |  |  |  |  |  |  |  |
Current assets |  |  | 2,588 | 2,513 |  |  |  |
Net property, plant and equipment |  |  | 69,784 | 72,321 |  |  |  |
Total assets |  |  | 72,372 | 74,834 |  |  |  |
Current liabilities |  |  | 965 | 1,288 |  |  |  |
Owners’ equity – non-controlling interest |  |  | 71,407 | 73,546 |  |  |  |
Net Income (Loss) Attributable to Noncontrolling Interest |  |  | $ 14,910 | 14,127 | $ 14,521 |  |  |
Valencia [Member] | Public Service Company of New Mexico [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |
Jointly owned utility plant, option to purchase proportionate ownership share |  |  | 50.00% |  |  |  | 50.00% |
PVNGS [Member] | Public Service Company of New Mexico [Member] | Palo Verde Nuclear Generating Station [Member] |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |
Accrued lease payments |  |  | $ 18,400 | $ 26,000 |  |  |  |
Delta [Member] | Public Service Company of New Mexico [Member] |  |  |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |  |  |
Period of long term contract for purchase of electric power, fixed costs |  |  | 20 years |  |  |  |  |

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