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Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Income Taxes [Line Items] |  |  |
Current federal income tax | $ 0 | $ 0 | $ (2,015)
Current state income tax | (527) | (1,376) | (728)
Deferred federal income tax | 60,892 | 5,488 | 59,814
Deferred state income tax | 3,886 | 12,305 | 14,831
Amortization of accumulated investment tax credits | (973) | (1,342) | (2,164)
Total income taxes (benefit) | 63,278 | 15,075 | 69,738
Public Service Company of New Mexico [Member] |  |  |
Income Taxes [Line Items] |  |  |
Current federal income tax | (10,290) | (7,934) | (2,175)
Current state income tax | (1,907) | (1,988) | (979)
Deferred federal income tax | 49,123 | (6,827) | 45,890
Deferred state income tax | 4,969 | 5,333 | 12,061
Amortization of accumulated investment tax credits | (973) | (1,342) | (2,164)
Total income taxes (benefit) | 40,922 | (12,758) | 52,633
Texas-New Mexico Power Company [Member] |  |  |
Income Taxes [Line Items] |  |  |
Current federal income tax | 9,445 | 1,603 | 35
Current state income tax | 1,729 | 1,639 | 1,939
Deferred federal income tax | 12,690 | 20,904 | 20,577
Deferred state income tax | (28) | (21) | (28)
Total income taxes (benefit) | $ 23,836 | $ 24,125 | $ 22,523

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- Definition Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6509736 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 + Details
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- Definition Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6509736 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 + Details
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