Segment Reporting - Selected Financial Data for Segments (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
External revenue
Service revenue and other	$ 71,686	$ 64,414
Operating expenses
Cost of services	26,567	26,339
Selling, general and administrative	26,609	23,771
Depreciation and amortization	15,782	14,684
Operating income (loss)	2,728	(380)
Operating Segments
Operating expenses
Selling, general and administrative	26,609	23,771
Depreciation and amortization	15,782	14,684
Total operating expenses	68,958	64,794
Operating income (loss)	2,728	(380)
Operating Segments \| Broadband
External revenue
Service revenue and other	67,203	59,714
Operating expenses
Selling, general and administrative	15,571	13,489
Depreciation and amortization	14,867	12,876
Total operating expenses	55,867	51,533
Operating income (loss)	11,336	8,181
Operating Segments \| Tower
External revenue
Service revenue and other	4,576	4,847
Operating expenses
Selling, general and administrative	450	318
Depreciation and amortization	513	484
Total operating expenses	2,155	2,094
Operating income (loss)	2,421	2,753
Intersegment Eliminations
External revenue
Service revenue and other	0	4
Intersegment Eliminations \| Broadband
External revenue
Service revenue and other	55	50
Intersegment Eliminations \| Tower
External revenue
Service revenue and other	38	101
Intersegment Eliminations \| Corporate & Eliminations
External revenue
Service revenue and other	(93)	(147)
Corporate, Non-Segment
Operating expenses
Selling, general and administrative	10,588	9,964
Depreciation and amortization	402	1,324
Total operating expenses	10,936	11,167
Operating income (loss)	(11,029)	(11,314)
Residential & SMB - Cable Markets \| Operating Segments
External revenue
Service revenue and other	44,756	43,492
Residential & SMB - Cable Markets \| Operating Segments \| Broadband
External revenue
Service revenue and other	44,756	43,492
Residential & SMB - Cable Markets \| Operating Segments \| Tower
External revenue
Service revenue and other	0	0
Residential & SMB - Glo Fiber Markets \| Operating Segments
External revenue
Service revenue and other	7,003	3,421
Residential & SMB - Glo Fiber Markets \| Operating Segments \| Broadband
External revenue
Service revenue and other	7,003	3,421
Residential & SMB - Glo Fiber Markets \| Operating Segments \| Tower
External revenue
Service revenue and other	0	0
Commercial Fiber \| Operating Segments
External revenue
Service revenue and other	11,698	9,062
Commercial Fiber \| Operating Segments \| Broadband
External revenue
Service revenue and other	11,698	9,062
Commercial Fiber \| Operating Segments \| Tower
External revenue
Service revenue and other	0	0
Tower lease \| Operating Segments
External revenue
Service revenue and other	4,538	4,746
Tower lease \| Operating Segments \| Broadband
External revenue
Service revenue and other	0	0
Tower lease \| Operating Segments \| Tower
External revenue
Service revenue and other	4,538	4,746
RLEC & Other \| Operating Segments
External revenue
Service revenue and other	3,691	3,689
RLEC & Other \| Operating Segments \| Broadband
External revenue
Service revenue and other	3,691	3,689
RLEC & Other \| Operating Segments \| Tower
External revenue
Service revenue and other	0	0
Service revenue and other \| Operating Segments
External revenue
Service revenue and other	71,686	64,410
Service revenue and other \| Operating Segments \| Broadband
External revenue
Service revenue and other	67,148	59,664
Service revenue and other \| Operating Segments \| Tower
External revenue
Service revenue and other	4,538	4,746
Cost of services \| Operating Segments
Operating expenses
Cost of services	26,567	26,339
Cost of services \| Operating Segments \| Broadband
Operating expenses
Cost of services	25,429	25,168
Cost of services \| Operating Segments \| Tower
Operating expenses
Cost of services	1,192	1,292
Cost of services \| Corporate, Non-Segment
Operating expenses
Cost of services	$ (54)	$ (121)

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