Note 4 - Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Property, Plant, and Equipment, Gross	$ 402,471,683	$ 372,693,555
Communications Plant [Member]
Property, Plant, and Equipment, Gross	345,950,372	318,329,007
Other Property [Member]
Property, Plant, and Equipment, Gross	36,715,926	35,035,142
Video Plant [Member]
Property, Plant, and Equipment, Gross	19,805,385	19,329,406
Land [Member] \| Communications Plant [Member]
Property, Plant, and Equipment, Gross	707,648	707,648
Building [Member] \| Communications Plant [Member]
Property, Plant, and Equipment, Gross	11,375,143	11,180,405
Other Support Assets [Member] \| Communications Plant [Member]
Property, Plant, and Equipment, Gross	26,975,364	26,008,607
Central Office And Circuit Equipment [Member] \| Communications Plant [Member]
Property, Plant, and Equipment, Gross	71,349,591	68,473,005
Cable And Wire Facilities [Member] \| Communications Plant [Member]
Property, Plant, and Equipment, Gross	223,373,746	198,100,277
Other Plant And Equipment [Member] \| Communications Plant [Member]
Property, Plant, and Equipment, Gross	404,883	404,883
Plant Under Construction [Member] \| Communications Plant [Member]
Property, Plant, and Equipment, Gross	$ 11,763,997	$ 13,454,182