Note 6 - Accrued Retirement Benefits (Tables)
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12 Months Ended |
Dec. 31, 2020 |
Notes Tables |
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Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
| | 2020 | | | 2019 | | | | (in thousands) | | | | | | | | | | | Defined benefit pension plans | | $ | 8,790 | | | $ | 7,658 | | Non-qualified retirement plans | | | 2,301 | | | | 2,209 | | Total | | | 11,091 | | | | 9,867 | | Less current portion | | | (165 | ) | | | (165 | ) | Non-current portion of accrued retirement benefits | | $ | 10,926 | | | $ | 9,702 | |
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Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block] |
| | 2020 | | | 2019 | | | | (in thousands) | | | | | | | | | | | | | Change in benefit obligations: | | | | | | | | | | | Benefit obligations at beginning of year | | $ | | | | $ | | | 51,306 | | Interest cost | | | | | | | | | 2,096 | | Actuarial loss | | | | | | | | | 4,706 | | Benefits paid | | | | ) | | | | | (3,980 | ) | | | | | | | | | | | | Benefit obligations at end of year | | | | | | | | | 54,128 | | | | | | | | | | | | | Change in plan assets: | | | | | | | | | | | Fair value of plan assets at beginning of year | | | | | | | | | 41,290 | | Actual return on plan assets | | | | | | | | | 6,814 | | Employer contributions | | | | | | | | | 160 | | Benefits paid | | | | ) | | | | | (3,980 | ) | | | | | | | | | | | | Fair value of plan assets at end of year | | | | | | | | | 44,284 | | | | | | | | | | | | | Funded status | | $ | | ) | | $ | | | (9,844 | ) | Accumulated benefit obligations | | $ | | | | $ | | | 54,128 | | | | | | | | | | | | | Weighted average assumptions to determine benefit obligations: | | | | | | | | | | | Discount rate | | | 2.28 | - | 2.35% | | | | 3.10 | - | 3.14% | | Expected long-term return on plan assets | | | | 4.50% | | | | | | 4.75% | | | Rate of compensation increase | | | | n/a | | | | | | n/a | | |
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Schedule of Net Benefit Costs [Table Text Block] |
| | 2020 | | | 2019 | | | | (in thousands) | | | | | | | | | | | Pension and other benefits: | | | | | | | | | Interest cost | | $ | 1,633 | | | $ | 2,096 | | Expected return on plan assets | | | (2,020 | ) | | | (1,965 | ) | Recognized net actuarial loss | | | 839 | | | | 865 | | Pension expense | | $ | 452 | | | $ | 996 | | | | | | | | | | | Other changes in plan assets and benefit obligations recognized in comprehensive income: | | | | | | | | | Net loss (gain) | | $ | 1,739 | | | $ | (141 | ) | Amortization of recognized gain | | | (839 | ) | | | (865 | ) | Total recognized loss (gain) in comprehensive loss | | $ | 900 | | | $ | (1,006 | ) |
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Defined Benefit Plan, Assumptions [Table Text Block] |
Weighted average assumptions used to determine net periodic benefit cost: | | | 2020 | | | | 2019 | | | | | | | | | | | | | Discount rate | | | 3.10 | - | 3.14% | | | | 4.28% | | Expected long-term return on plan assets | | | | 4.75% | | | | | 5.00% | | Rate of compensation increase | | | | n/a | | | | | n/a | |
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Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
| | 2020 Fair Value Measurements (in thousands) | | | | | | | | | | | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | | Significant Other Observable Inputs (Level 2) | | | Measured at NAV as a practical expedient | | | Total | | ACIT equity funds | | $ | - | | | $ | 9,406 | | | | 1,152 | | | $ | 10,558 | | ACIT fixed income funds | | | - | | | | 29,958 | | | | 2,108 | | | | 32,066 | | Cash management funds | | | - | | | | 963 | | | | - | | | | 963 | | | | | | | | | | | | | | | | | | | | | $ | - | | | $ | 40,327 | | | | 3,260 | | | $ | 43,587 | | | | 2019 Fair Value Measurements(in thousands) | | | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | | Significant Other Observable Inputs (Level 2) | | | Total | | AHGT equity funds | | $ | - | | | $ | 12,714 | | | $ | 12,714 | | AHGT fixed income funds | | | - | | | | 30,548 | | | | 30,548 | | Cash management funds | | | - | | | | 1,022 | | | | 1,022 | | | | | | | | | | | | | | | | | $ | - | | | $ | 44,284 | | | $ | 44,284 | |
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Schedule of Expected Benefit Payments [Table Text Block] |
| 2021 | | | | $ | 3,992 | | | 2022 | | | | $ | 3,878 | | | 2023 | | | | $ | 3,767 | | | 2024 | | | | $ | 3,660 | | | 2025 | | | | $ | 3,556 | | 2026 | - | 2030 | | | $ | 16,065 | |
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