Note 6 - Employee Benefit Plans - Benefit Obligation and Prepaid Benefit Costs Assumptions (Details)		2 Months Ended	12 Months Ended
		Feb. 17, 2022	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Discount rate: net periodic pension cost			5.14%	5.77%
Discount rate: projected benefit obligation			5.14%	5.77%
Expected rate of return on plan assets		7.25%	7.25%	7.25%
Rate of compensation increase: net periodic pension cost	[1]		3.00%
Rate of compensation increase: projected benefit obligation	[2]		3.00%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase: net periodic pension cost	[1]			5.00%
Rate of compensation increase: projected benefit obligation	[2]			4.00%
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase: net periodic pension cost	[1]			2.00%
Rate of compensation increase: projected benefit obligation	[2]			2.00%
Median [Member]
Defined Benefit Plan Disclosure [Line Items]
Rate of compensation increase: projected benefit obligation	[2]			3.00%

[1] 5% for 2024 and 2% per year thereafter

[2] 4% for 2024, 3% for 2025 and 2% per year thereafter