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Note 16 - Employee Benefit Plans (Tables) | 12 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Fair Value of Plan Assets [Table Text Block] |
|  | June 30, 2025 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Cash and cash equivalents |  | $ | 341 |  |  | $ | 341 |  |  | $ | - |  |  | $ | - |
Common and preferred stocks |  |  | 63,990 |  |  |  | - |  |  |  | 63,990 |  |  |  | - |
Corporate bonds and other fixed income securities |  |  | 96,042 |  |  |  | - |  |  |  | 96,042 |  |  |  | - |
Other |  |  | 8,899 |  |  |  | - |  |  |  | 8,899 |  |  |  | - |
|  | $ | 169,272 |  |  | $ | 341 |  |  | $ | 168,931 |  |  |  | - |
|  | June 30, 2024 |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Cash and cash equivalents |  | $ | 2,792 |  |  | $ | 2,792 |  |  | $ | - |  |  | $ | - |
Common and preferred stocks |  |  | 53,111 |  |  |  | - |  |  |  | 53,111 |  |  |  | - |
Corporate bonds and other fixed income securities |  |  | 96,522 |  |  |  | - |  |  |  | 96,522 |  |  |  | - |
Other |  |  | 12,120 |  |  |  | - |  |  |  | 12,120 |  |  |  | - |
|  | $ | 164,545 |  |  | $ | 2,792 |  |  | $ | 161,753 |  |  |  | - |
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | U.S. Plans |  |  | Foreign Plans |
|  | Year Ended June 30, |  |  | Year Ended June 30, |
Asset Category |  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Equity securities |  | 42% |  |  | 35% |  |  | 0% |  |  | 0% |
Debt securities |  | 48% |  |  | 42% |  |  | 70% |  |  | 69% |
Global balanced securities |  | 10% |  |  | 11% |  |  | 0% |  |  | 1% |
Other |  | 0% |  |  | 12% |  |  | 30% |  |  | 30% |
Total |  | 100% |  |  | 100% |  |  | 100% |  |  | 100% |
Defined Benefit Plan, Assumptions [Table Text Block] |
Year Ended June 30 | 2025 | 2024 | 2023 |
Plan assumptions - obligations |  |  |  |  |  |  |
Discount rate | 2.40% - 5.6% | 1.85% - 5.60% | 1.48% - 5.60% |
Rate of compensation increase | 3.25% | 3.30% | 3.30% |
Plan assumption - cost |  |  |  |  |  |  |
Discount rate | 1.85% - 5.60% | 1.48% - 5.6% | 1.37% - 5.6% |
Expected return on assets | 5.40% - 6.35% | 4.55% - 6.50% | 2.80% - 6.65% |
Rate of compensation increase | 3.25% | 3.30% | 3.30% |
Multiemployer Plan [Table Text Block] |
|  |  |  |  | Pension Protection Act |  |  |  |  |  |  |  |  |  |  |  |  |  | Expiration
|  |  |  |  | Zone Status |  | Contributions |  |  | Date of
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Collective
|  | EIN/Plan |  |  |  | FIP/RP |  |  |  |  |  |  |  |  |  |  |  |  | Surcharge | Bargaining
Pension Fund |  | Number |  | 2025 | 2024 | Status |  | 2025 |  |  | 2024 |  |  | 2023 |  | Imposed? | Agreement
New England Teamsters and Trucking Industry Pension Fund |  | 04-6372430-001 |  | Red | Red | Yes/ Implemented |  | $1,061 |  |  | $816 |  |  | $695 |  | No | Mar-27
IAM National Pension Fund, National Pension Plan |  | 51-6031295-002 |  | Red | Red | Yes/Implemented |  | 658 |  |  | 586 |  |  | 569 |  | Yes | Aug-29
|  |  |  |  |  |  |  |  | $ | 1,719 |  |  | $ | 1,402 |  |  | $ | 1,264 |  |  |
Pension Plan [Member] |
Notes Tables |
Schedule of Net Benefit Costs [Table Text Block] |
|  | U.S. Plans |  |  | Foreign Plans |
|  | Year Ended June 30, |  |  | Year Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2025 |  |  | 2024 |  |  | 2023 |
Service Cost |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 250 |  |  | $ | 196 |  |  | $ | 176 |
Interest Cost |  |  | 9,544 |  |  |  | 9,891 |  |  |  | 9,586 |  |  |  | 1,217 |  |  |  | 1,190 |  |  |  | 1,039 |
Expected return on plan assets |  |  | (10,564 | ) |  |  | (11,113 | ) |  |  | (11,973 | ) |  |  | (1,383 | ) |  |  | (1,404 | ) |  |  | (943 | )
Recognized net actuarial loss |  |  | 4,221 |  |  |  | 3,802 |  |  |  | 3,814 |  |  |  | - |  |  |  | (607 | ) |  |  | (57 | )
Amortization of prior service cost (benefit) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (3 | ) |  |  | (3 | ) |  |  | (4 | )
Net periodic benefit cost (benefit) |  | $ | 3,201 |  |  | $ | 2,580 |  |  | $ | 1,427 |  |  | $ | 81 |  |  | $ | (628 | ) |  | $ | 211 |
Schedule of Net Funded Status [Table Text Block] |
|  | U.S. Plans |  |  | Foreign Plans |
|  | Year Ended June 30, |  |  | Year Ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Change in benefit obligation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Benefit obligation at beginning of year |  | $ | 178,439 |  |  | $ | 184,682 |  |  | $ | 26,994 |  |  | $ | 25,454 |
Service cost |  |  | - |  |  |  | - |  |  |  | 250 |  |  |  | 196 |
Interest cost |  |  | 9,544 |  |  |  | 9,891 |  |  |  | 1,217 |  |  |  | 1,190 |
Plan settlements |  |  | - |  |  |  | - |  |  |  | (270 | ) |  |  | 0 |
Actuarial gain |  |  | (1,226 | ) |  |  | 96 |  |  |  | (1,757 | ) |  |  | 555 |
Benefits paid |  |  | (15,441 | ) |  |  | (16,230 | ) |  |  | (1,793 | ) |  |  | (1,779 | )
Foreign currency exchange rate & other changes |  |  |  |  |  |  | - |  |  |  | 2,336 |  |  |  | 1,378 |
Projected benefit obligation at end of year |  | $ | 171,316 |  |  | $ | 178,439 |  |  | $ | 26,977 |  |  | $ | 26,994 |
Change in plan assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year |  | $ | 142,312 |  |  | $ | 142,114 |  |  | $ | 22,233 |  |  | $ | 22,250 |
Actual return on plan assets |  |  | 11,996 |  |  |  | 6,447 |  |  |  | 161 |  |  |  | 1,317 |
Employer contribution |  |  | 7,578 |  |  |  | 9,981 |  |  |  | 218 |  |  |  | 257 |
Benefits paid |  |  | (15,441 | ) |  |  | (16,230 | ) |  |  | (1,617 | ) |  |  | (1,497 | )
Foreign currency exchange rate & other changes |  |  |  |  |  |  | - |  |  |  | 1,838 |  |  |  | (94 | )
Fair value of plan assets at end of year |  | $ | 146,445 |  |  | $ | 142,312 |  |  | $ | 22,833 |  |  | $ | 22,233 |
Funded Status |  | $ | (24,871 | ) |  | $ | (36,127 | ) |  | $ | (4,144 | ) |  | $ | (4,761 | )
Amounts recognized in the consolidated balance sheets consist of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prepaid benefit cost |  | $ | - |  |  | $ | - |  |  | $ | 3,294 |  |  | $ | 2,570 |
Current liabilities |  |  | (113 | ) |  |  | (166 | ) |  |  | (476 | ) |  |  | (625 | )
Non-current liabilities |  |  | (24,758 | ) |  |  | (35,961 | ) |  |  | (6,962 | ) |  |  | (6,706 | )
Net amount recognized |  | $ | (24,871 | ) |  | $ | (36,127 | ) |  | $ | (4,144 | ) |  | $ | (4,761 | )
Unrecognized net actuarial loss |  | $ | 114,166 |  |  | $ | 121,045 |  |  | $ | 5,199 |  |  | $ | 5,273 |
Unrecognized prior service cost |  |  | - |  |  |  | - |  |  |  | (25 | ) |  |  | (26 | )
Accumulated other comprehensive income, pre-tax |  | $ | 114,166 |  |  | $ | 121,045 |  |  | $ | 5,174 |  |  | $ | 5,247 |
Target [Member] |
Notes Tables |
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | 2025 |
Asset Category – Target |  | U.S. |  |  | U.K. |
Equity securities |  | 40% |  |  | 0% |
Debt and market neutral securities |  | 50% |  |  | 67% |
Global balanced securities |  | 5% |  |  | 1% |
Other |  | 5% |  |  | 32% |
Total |  | 100% |  |  | 100% |

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