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Note 11 - Pension Plan and Other Postretirement Benefits (Tables) | 9 Months Ended
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Sep. 30, 2020
Notes Tables |
Schedule of Net Benefit Costs [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(in thousands) |  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Service Cost—Benefit Earned During the Period |  | $ | 1,655 |  |  | $ | 1,373 |  |  | $ | 4,966 |  |  | $ | 4,119 |
Interest Cost on Projected Benefit Obligation |  |  | 3,264 |  |  |  | 3,603 |  |  |  | 9,790 |  |  |  | 10,809 |
Expected Return on Assets |  |  | (5,506 | ) |  |  | (5,324 | ) |  |  | (16,516 | ) |  |  | (15,973 | )
Amortization of Prior-Service Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
From Regulatory Asset |  |  | - |  |  |  | 1 |  |  |  | - |  |  |  | 4 |
From Other Comprehensive Income1 |  |  | - |  |  |  | 2 |  |  |  | - |  |  |  | 6 |
Amortization of Net Actuarial Loss: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
From Regulatory Asset |  |  | 2,231 |  |  |  | 1,163 |  |  |  | 6,693 |  |  |  | 3,488 |
From Other Comprehensive Income1 |  |  | 55 |  |  |  | 26 |  |  |  | 165 |  |  |  | 79 |
Net Periodic Pension Cost2 |  | $ | 1,699 |  |  | $ | 844 |  |  | $ | 5,098 |  |  | $ | 2,532 |
1Corporate cost included in nonservice cost components of postretirement benefits. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2Allocation of costs: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service costs included in OTP capital expenditures |  | $ | 516 |  |  | $ | 333 |  |  | $ | 1,371 |  |  | $ | 1,059 |
Service costs included in electric operation and maintenance expenses |  |  | 1,099 |  |  |  | 1,007 |  |  |  | 3,476 |  |  |  | 2,961 |
Service costs included in other nonelectric expenses |  |  | 40 |  |  |  | 33 |  |  |  | 119 |  |  |  | 99 |
Nonservice costs capitalized as regulatory assets |  |  | 13 |  |  |  | (128 | ) |  |  | 36 |  |  |  | (408 | )
Nonservice costs included in n onservice cost components of postretirement benefits |  |  | 31 |  |  |  | (401 | ) |  |  | 96 |  |  |  | (1,179 | )
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(in thousands) |  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Service Cost—Benefit Earned During the Period |  | $ | 45 |  |  | $ | 104 |  |  | $ | 134 |  |  | $ | 313 |
Interest Cost on Projected Benefit Obligation |  |  | 362 |  |  |  | 433 |  |  |  | 1,086 |  |  |  | 1,301 |
Amortization of Prior Service Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
From Regulatory Asset |  |  | - |  |  |  | 2 |  |  |  | - |  |  |  | 4 |
From Other Comprehensive Income1 |  |  | - |  |  |  | 4 |  |  |  | - |  |  |  | 12 |
Amortization of Net Actuarial Loss: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
From Regulatory Asset |  |  | 24 |  |  |  | 31 |  |  |  | 71 |  |  |  | 93 |
From Other Comprehensive Income1 |  |  | 85 |  |  |  | 87 |  |  |  | 256 |  |  |  | 262 |
Net Periodic Pension Cost2 |  | $ | 516 |  |  | $ | 661 |  |  | $ | 1,547 |  |  | $ | 1,985 |
1Amortization of prior service costs and net actuarial losses from other comprehensive income are included in n onservice cost components of postretirement benefits. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2Allocation of Costs: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service costs included in electric operation and maintenance expenses |  | $ | - |  |  | $ | 26 |  |  | $ | - |  |  | $ | 78 |
Service costs included in other nonelectric expenses |  |  | 45 |  |  |  | 78 |  |  |  | 134 |  |  |  | 235 |
Nonservice costs included in n onservice cost components of postretirement benefits |  |  | 471 |  |  |  | 557 |  |  |  | 1,413 |  |  |  | 1,672 |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(in thousands) |  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Service Cost—Benefit Earned During the Period |  | $ | 461 |  |  | $ | 321 |  |  | $ | 1,385 |  |  | $ | 964 |
Interest Cost on Projected Benefit Obligation |  |  | 598 |  |  |  | 770 |  |  |  | 1,795 |  |  |  | 2,312 |
Amortization of Prior-Service Cost: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
From Regulatory Asset |  |  | (1,169 | ) |  |  | - |  |  |  | (3,508 | ) |  |  | - |
From Other Comprehensive Income1 |  |  | (28 | ) |  |  | - |  |  |  | (86 | ) |  |  | - |
Amortization of Net Actuarial Loss: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
From Regulatory Asset |  |  | 1,051 |  |  |  | 393 |  |  |  | 3,154 |  |  |  | 1,178 |
From Other Comprehensive Income1 |  |  | 26 |  |  |  | 10 |  |  |  | 78 |  |  |  | 29 |
Net Periodic Postretirement Benefit Cost2 |  | $ | 939 |  |  | $ | 1,494 |  |  | $ | 2,818 |  |  | $ | 4,483 |
Effect of Medicare Part D Subsidy |  | $ | 281 |  |  | $ | (45 | ) |  | $ | 842 |  |  | $ | (134 | )
1Corporate cost included in nonservice cost components of postretirement benefits. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2Allocation of Costs: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service costs included in OTP capital expenditures |  | $ | 144 |  |  | $ | 78 |  |  | $ | 382 |  |  | $ | 248 |
Service costs included in electric operation and maintenance expenses |  |  | 306 |  |  |  | 235 |  |  |  | 970 |  |  |  | 693 |
Service costs included in other nonelectric expenses |  |  | 11 |  |  |  | 8 |  |  |  | 33 |  |  |  | 23 |
Nonservice costs capitalized as regulatory assets |  |  | 150 |  |  |  | 284 |  |  |  | 396 |  |  |  | 905 |
Nonservice costs included in n onservice cost components of postretirement benefits |  |  | 328 |  |  |  | 889 |  |  |  | 1,037 |  |  |  | 2,614 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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