Note 11 - Retirement Plans (Details Textual) - USD ($) $ in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	3
Defined Benefit Plan, Plan Assets, Amount	$ 112,000	$ 117,000	$ 104,000
Meredith Plan [Member]
Defined Benefit Plan, Plan Assets, Amount	22,000
Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation	18,000
Pension Plan [Member] | Gray Pension Plan [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	96,000	104,000
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	0
Capital Accumulation Plan [Member]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	24,000
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 28,000	26,000	17,000
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	10
Capital Accumulation Plan [Member] | First 3% of Each Employee's Salary Deferral [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	100.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	1.00%
Capital Accumulation Plan [Member] | Next 2% of Each Employee's Salary Deferral [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	5.00%
Profit Sharing Contribution [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 0	$ 10,000	$ 9,000