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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Taxes [Line Items] |  |  |
Current federal income tax | $ 0 | $ 0 | $ 0
Current state income tax (benefit) | (2,841) | 1,597 | 1,835
Deferred federal income tax (benefit) | (11,503) | 18,413 | 20,679
Deferred state income tax (benefit) | (825) | 7,302 | 11,315
Amortization of accumulated investment tax credits | (1,181) | (1,182) | (1,247)
Total income taxes (benefits) | (16,350) | 26,130 | 32,582
PNM |  |  |
Income Taxes [Line Items] |  |  |
Current federal income tax | 9,518 | (13,533) | 0
Current state income tax (benefit) | (4,304) | 3,244 | (128)
Deferred federal income tax (benefit) | (22,951) | 25,298 | 18,774
Deferred state income tax (benefit) | 1,150 | 4,361 | 8,583
Amortization of accumulated investment tax credits | (171) | (172) | (237)
Total income taxes (benefits) | (16,758) | 19,198 | 26,992
TNMP |  |  |
Income Taxes [Line Items] |  |  |
Current federal income tax | 11,354 | 17,055 | 5,770
Current state income tax (benefit) | 3,055 | 2,662 | 2,395
Deferred federal income tax (benefit) | 2,917 | (4,527) | (224)
Deferred state income tax (benefit) | (29) | (29) | (29)
Total income taxes (benefits) | $ 17,297 | $ 15,161 | $ 7,912

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- Definition Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)(Note 1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -SubTopic 10 -Topic 740 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 + Details
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- Definition Amount of current state and local tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current regional, territorial, and provincial tax expense (benefit) for non-US (United States of America) jurisdiction. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)(Note 1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -SubTopic 10 -Topic 740 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 6.I.7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1 + Details
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