XML 58 R46.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Note 7 - Accrued Retirement Benefits - Fair Values of Pension Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Fair value of pension plan assets | $ 13,860 | $ 13,783 | $ 32,103
Equity Funds [Member] |  |  |
Fair value of pension plan assets | 760 | 1,459 |
Fixed Income Funds [Member] |  |  |
Fair value of pension plan assets | 12,072 | 10,927 |
Money Market Funds [Member] |  |  |
Fair value of pension plan assets | 1,028 | 1,397 |
Fair Value, Inputs, Level 1 [Member] |  |  |
Fair value of pension plan assets | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Equity Funds [Member] |  |  |
Fair value of pension plan assets | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Fixed Income Funds [Member] |  |  |
Fair value of pension plan assets | 0 | 0 |
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member] |  |  |
Fair value of pension plan assets | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Fair value of pension plan assets | 13,790 | 12,694 |
Fair Value, Inputs, Level 2 [Member] | Equity Funds [Member] |  |  |
Fair value of pension plan assets | 760 | 631 |
Fair Value, Inputs, Level 2 [Member] | Fixed Income Funds [Member] |  |  |
Fair value of pension plan assets | 12,002 | 10,666 |
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member] |  |  |
Fair value of pension plan assets | 1,028 | 1,397 |
Fair Value, Inputs, Level 3 [Member] |  |  |
Fair value of pension plan assets | 70 | 1,089 |
Fair Value, Inputs, Level 3 [Member] | Equity Funds [Member] |  |  |
Fair value of pension plan assets | 0 | 828 |
Fair Value, Inputs, Level 3 [Member] | Fixed Income Funds [Member] |  |  |
Fair value of pension plan assets | 70 | 261 |
Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member] |  |  |
Fair value of pension plan assets | $ 0 | $ 0 |

X
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |