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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, 2019 USD ($)
Public Service Company of New Mexico | Pension Plan |
Net actuarial (gain) loss |
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year | $ 150,274
Experience (gain) loss | 8,926
Regulatory asset (liability) adjustment | (5,539)
Amortization recognized in net periodic benefit cost (income) | (7,270)
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at end of year | 146,391
Amortization expected to be recognized in 2020 | 8,131
Public Service Company of New Mexico | Executive Retirement Program |
Net actuarial (gain) loss |
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year | 2,086
Experience (gain) loss | 1,053
Regulatory asset (liability) adjustment | (611)
Amortization recognized in net periodic benefit cost (income) | (133)
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at end of year | 2,395
Amortization expected to be recognized in 2020 | 169
Texas-New Mexico Power Company | Pension Plan |
Net actuarial (gain) loss |
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year | 0
Experience (gain) loss | 1,877
Regulatory asset (liability) adjustment | (1,877)
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 2020 | 0
Texas-New Mexico Power Company | Executive Retirement Program |
Net actuarial (gain) loss |
Amounts in AOCI not yet recognized in net periodic benefit cost (income) at beginning of year | 0
Experience (gain) loss | 54
Regulatory asset (liability) adjustment | (54)
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 2020 | $ 0

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