Note 12 - Leases - Components of Lease Expense and Other Lease Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Operating Lease - Operating Cash Flows (Fixed Payments)	$ 1,623	$ 1,697	$ 4,481	$ 3,571
Operating Lease - Operating Cash Flows (Liability Reduction)	1,325	1,132	3,819	2,797
Change due to new Right of Use Assets - Operating Leases	$ 9,448	2,339	$ 12,565	5,884
Weighted Average Discount Rate	6.48%		6.48%		3.09%
Weighted Average Remaining Lease Term (Year)	9 years 4 months 9 days		9 years 4 months 9 days		7 years 8 months 26 days
Fiber Internet Services [Member] | Operating Segments [Member]
Operating Lease Cost (leases with a total term greater than 12 months)	$ 1,514
Short-term Lease Cost (leases with a total term of 12 months or less)	33
Variable Lease Cost	486
Total Lease Cost	$ 2,033
Mobile Services [Member] | Operating Segments [Member]
Operating Lease Cost (leases with a total term greater than 12 months)		1,234	$ 4,152	3,050
Short-term Lease Cost (leases with a total term of 12 months or less)		72	168	156
Variable Lease Cost		267	1,402	523
Total Lease Cost		$ 1,573	$ 5,722	$ 3,729