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Pension and Other Postretirement Benefits - Pre-Tax Information about Prior Service Cost and Net Actuarial (Gain) loss in AOCI (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($)
Public Service Company of New Mexico | Pension Plan |
Prior service cost |
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year | $ (1,045)
Experience (gain) loss | 0
Regulatory asset (liability) adjustment | 1,045
Amortization recognized in net periodic benefit cost (income) | 0
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at end of year | 0
Amortization expected to be recognized in 2019 | 0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax [Abstract] |
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year | 148,526
Experience (gain) loss | 22,728
Regulatory asset (liability) adjustment | (13,571)
Amortization recognized in net periodic benefit cost (income) | (7,409)
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at end of year | 150,274
Amortization expected to be recognized in 2019 | 7,270
Public Service Company of New Mexico | Executive Retirement Program |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax [Abstract] |
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year | 2,450
Experience (gain) loss | (508)
Regulatory asset (liability) adjustment | 295
Amortization recognized in net periodic benefit cost (income) | (151)
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at end of year | 2,086
Amortization expected to be recognized in 2019 | 133
Texas-New Mexico Power Company | Pension Plan |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax [Abstract] |
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year | 0
Experience (gain) loss | 1,926
Regulatory asset (liability) adjustment | (1,926)
Amortization recognized in net periodic benefit cost (income) | 0
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at end of year | 0
Amortization expected to be recognized in 2019 | 0
Texas-New Mexico Power Company | Executive Retirement Program |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Reclassification Adjustment, before Tax [Abstract] |
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year | 0
Experience (gain) loss | 4
Regulatory asset (liability) adjustment | (4)
Amortization recognized in net periodic benefit cost (income) | 0
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at end of year | 0
Amortization expected to be recognized in 2019 | $ 0

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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- Definition Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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