Note 12 - Leases - Components of Lease Expense and Other Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Operating Lease - Operating Cash Flows (Fixed Payments)	$ 1,843	$ 1,378
Operating Lease - Operating Cash Flows (Liability Reduction)	1,482	1,219
Change due to new Right of Use Assets - Operating Leases	$ 2,404	2,821
Weighted Average Discount Rate	7.27%		6.92%
Weighted Average Remaining Lease Term (Year)	11 years 5 months 8 days		10 years 6 months 25 days
Fiber Internet Services [Member] | Operating Segments [Member]
Operating Lease Cost (leases with a total term greater than 12 months)	$ 1,663
Short-term Lease Cost (leases with a total term of 12 months or less)	8
Variable Lease Cost	575
Total Lease Cost	$ 2,246
Mobile Services [Member] | Operating Segments [Member]
Operating Lease Cost (leases with a total term greater than 12 months)		1,273
Short-term Lease Cost (leases with a total term of 12 months or less)		87
Variable Lease Cost		434
Total Lease Cost		$ 1,794