XML 54 R39.htm IDEA: XBRL DOCUMENT
v3.25.1

Note 9 - Retirement Plans (Tables) | 12 Months Ended
--- | ---
Mar. 31, 2025
Notes Tables |
Schedule of Changes in Projected Benefit Obligations [Table Text Block] |
|  | Fiscal Year: |
|  | 2025 |  |  | 2024 |
Change in benefit obligation |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 236,507 |  |  | $ | 235,038 |
Service cost (excluding expenses) |  |  | 4,905 |  |  |  | 5,505 |
Interest cost |  |  | 11,967 |  |  |  | 11,388 |
Actuarial gain |  |  | (14,616 | ) |  |  | (4,674 | )
Benefit payments |  |  | (21,375 | ) |  |  | (10,750 | )
Benefit obligation at end of year |  | $ | 217,388 |  |  | $ | 236,507 |
Change in plan assets |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  | $ | 288,949 |  |  | $ | 294,342 |
Actual return on plan assets |  |  | 26,901 |  |  |  | 6,428 |
Benefit payments and expenses |  |  | (22,729 | ) |  |  | (11,821 | )
Fair value of plan assets at end of year |  | $ | 293,121 |  |  | $ | 288,949 |
Funded status |  | $ | 75,733 |  |  | $ | 52,442 |
Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block] |
|  | Fiscal Year: |
|  | 2025 |  |  | 2024 |  |  | 2023 |
Amounts Recognized in Accumulated Other Comprehensive Pre-Tax Loss |  |  |  |  |  |  |  |  |  |  |  |
Prior service cost |  | $ | (1 | ) |  | $ | (9 | ) |  | $ | (75 | )
Net loss |  |  | (11,574 | ) |  |  | (34,883 | ) |  |  | (28,310 | )
Accumulated other comprehensive pre-tax loss |  | $ | (11,575 | ) |  | $ | (34,892 | ) |  | $ | (28,385 | )
Schedule of Defined Benefit Plans Disclosures [Table Text Block] |
|  | Fiscal Year: |
|  | 2025 |  |  | 2024 |  |  | 2023 |
Service cost including administrative expenses |  | $ | 5,805 |  |  | $ | 6,405 |  |  | $ | 8,240 |
Interest cost |  |  | 11,967 |  |  |  | 11,388 |  |  |  | 9,254 |
Expected return on plan assets |  |  | (18,504 | ) |  |  | (17,725 | ) |  |  | (16,104 | )
Amortization of net loss |  |  | 750 |  |  |  | 220 |  |  |  | - |
Amortization of prior service cost |  |  | 8 |  |  |  | 66 |  |  |  | 91 |
Net periodic benefit cost |  | $ | 26 |  |  | $ | 354 |  |  | $ | 1,481 |
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] |
|  | Fiscal Year: |
|  | 2025 |  |  | 2024 |  |  | 2023 |
Other Changes in Plan Assets and Benefit Obligation Recognized in Other Comprehensive Income |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial (gain) loss |  | $ | (22,559 | ) |  | $ | 6,792 |  |  | $ | (7,827 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |
Prior service cost |  |  | (8 | ) |  |  | (65 | ) |  |  | (91 | )
Actuarial loss |  |  | (750 | ) |  |  | (220 | ) |  |  | - |
Total recognized in other comprehensive income |  | $ | (23,317 | ) |  | $ | 6,507 |  |  | $ | (7,918 | )
Defined Benefit Plan, Assumptions [Table Text Block] |
|  |  |  |  |  | Fiscal Year: |  |  |  |  |
|  | 2025 |  |  | 2024 |  |  | 2023 |
Weighted Average Assumptions for Balance Sheet Liability at End of Year: |  |  |  |  |  |  |  |  |  |  |  |
Discount rate - projected benefit obligation |  |  | 5.63 | % |  |  | 5.31 | % |  |  | 5.04 | %
Rate of compensation increase |  |  | 3.00 | % |  |  | 3.00 | % |  |  | 3.00 | %
Mortality table |  | Pri-2012 Blue Collar Generational Table Improvement Scale MP-2021 |  |  | Pri-2012 Blue Collar Generational Table Improvement Scale MP-2021 |  |  | Pri-2012 Blue Collar Generational Table Improvement Scale MP-2021 |
Weighted Average Assumptions for Benefit Cost at Beginning of Year: |  |  |  |  |  |  |  |  |  |  |  |
Discount rate - benefit obligations |  |  | 5.31 | % |  |  | 5.04 | % |  |  | 3.81 | %
Discount rate - interest cost |  |  | 5.19 | % |  |  | 4.90 | % |  |  | 3.52 | %
Discount rate - service cost |  |  | 5.40 | % |  |  | 5.16 | % |  |  | 3.93 | %
Expected return on plan assets |  |  | 6.55 | % |  |  | 6.15 | % |  |  | 5.00 | %
Rate of compensation increase |  |  | 3.00 | % |  |  | 3.00 | % |  |  | 3.00 | %
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | Target Allocation for: |  |  | Percentage of Plan Assets as of: |
|  | Fiscal Year 2026 |  |  | March 31, 2025 |  |  | March 31, 2024 |
Equity securities |  |  | 25 | % |  |  | 24 | % |  |  | 15 | %
Debt securities |  |  | 69 | % |  |  | 72 | % |  |  | 80 | %
Real estate |  |  | 3 | % |  |  | 2 | % |  |  | 2 | %
Cash |  |  | 1 | % |  |  | 1 | % |  |  | 1 | %
Other |  |  | 2 | % |  |  | 1 | % |  |  | 2 | %
Total |  |  | 100 | % |  |  | 100 | % |  |  | 100 | %
Defined Benefit Plan, Plan Assets, Category [Table Text Block] |
|  | As of March 31, 2025 |
|  | Level 1 |  |  | Level 2 and Level 3 |  |  | Subtotal |  |  | Measured at NAV (1) |  |  | Total |
Equity securities |  | $ | 42,767 |  |  | $ | - |  |  | $ | 42,767 |  |  | $ | - |  |  | $ | 42,767 |
Held in common/collective trusts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 26,903 |  |  |  | 26,903 |
Real estate |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 4,451 |  |  |  | 4,451 |
Debt securities |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 212,162 |  |  |  | 212,162 |
Cash/short-term investments (2) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 3,485 |  |  |  | 3,485 |
Other investments |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 3,353 |  |  |  | 3,353 |
Fair value of plan assets |  | $ | 42,767 |  |  | $ | - |  |  | $ | 42,767 |  |  | $ | 250,354 |  |  | $ | 293,121 |
|  | As of March 31, 2024 |
|  | Level 1 |  |  | Level 2 and Level 3 |  |  | Subtotal |  |  | Measured at NAV (1) |  |  | Total |
Equity securities |  | $ | 26,371 |  |  | $ | - |  |  | $ | 26,371 |  |  | $ | - |  |  | $ | 26,371 |
Held in common/collective trusts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 17,730 |  |  |  | 17,730 |
Real estate |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 4,509 |  |  |  | 4,509 |
Debt securities |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 231,904 |  |  |  | 231,904 |
Cash/short-term investments (2) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 3,388 |  |  |  | 3,388 |
Other investments |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 5,047 |  |  |  | 5,047 |
Fair value of plan assets |  | $ | 26,371 |  |  | $ | - |  |  | $ | 26,371 |  |  | $ | 262,578 |  |  | $ | 288,949 |
Schedule of Expected Benefit Payments [Table Text Block] |
2026 |  | $ | 11,718 |
2027 |  |  | 12,423 |
2028 |  |  | 12,998 |
2029 |  |  | 13,612 |
2030 |  |  | 14,087 |
2031-2035 |  |  | 75,650 |

X
- Definition Tabular disclosure of defined benefit plan asset investment. Includes, but is not limited to, fair value of category of plan asset and its level within fair value hierarchy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (c)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (c)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -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/2009/role/commonPracticeRef -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_DefinedBenefitPlanPlanAssetsCategoryTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (d)(5) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amounts related to pension plans and/or other employee benefit plans in accumulated other comprehensive income (loss) expected to be recognized as components of net periodic benefit cost over the next fiscal year, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (j) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (k) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfAssumptionsUsedTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in the benefit obligation of pension plans and/or other employee benefit plans from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (a) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in plan assets and benefit obligations recognized in other comprehensive income (loss) during the period. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-3 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-4 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-2 + Details
Name: | us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (f) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration