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Note 5 - Employee Benefit Plans - Benefit Obligation and Prepaid Benefit Costs Assumptions (Details)
2 Months Ended 12 Months Ended
Feb. 17, 2022
Dec. 31, 2022
Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]      
Discount rate: net periodic pension cost   5.54% 2.64%
Discount rate: projected benefit obligation   5.54% 2.86%
Expected rate of return on plan assets 7.25% 7.25% 6.40%
Maximum [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Rate of compensation increase: net periodic pension cost   5.00% [1] 5.00%
Rate of compensation increase: projected benefit obligation   5.00% [1] 5.00%
Minimum [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Rate of compensation increase: net periodic pension cost   2.00% [1] 2.00%
Rate of compensation increase: projected benefit obligation   2.00% [1] 2.00%
[1] 5.00% for 2023, 2.00% per year thereafter.