Note 16 - Employee Benefit Plans - Target Asset Allocations (Details)	Jun. 30, 2026
U.S. Pension Plans [Member]
Target asset allocations	100.00%
U.S. Pension Plans [Member] \| Equity Securities [Member]
Target asset allocations	23.00%
U.S. Pension Plans [Member] \| Debt Securities [Member]
Target asset allocations	70.00%
U.S. Pension Plans [Member] \| Hedge Funds, Global Opportunity [Member]
Target asset allocations	4.00%
U.S. Pension Plans [Member] \| Other Debt Obligations [Member]
Target asset allocations	3.00%
U.K. Pension Plans [Member]
Target asset allocations	100.00%
U.K. Pension Plans [Member] \| Equity Securities [Member]
Target asset allocations	0.00%
U.K. Pension Plans [Member] \| Debt Securities [Member]
Target asset allocations	70.00%
U.K. Pension Plans [Member] \| Hedge Funds, Global Opportunity [Member]
Target asset allocations	0.00%
U.K. Pension Plans [Member] \| Other Debt Obligations [Member]
Target asset allocations	30.00%