Segment Reporting - Selected Financial Data for Segments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
External revenue
Service revenue and other	$ 71,842	$ 66,924	$ 214,869	$ 197,359
Operating expenses
Cost of services	27,751	27,477	80,394	80,572
Selling, general and administrative	24,402	22,227	76,702	69,152
Restructuring expense	0	641	0	1,031
Impairment expense	1,532	477	2,552	4,884
Depreciation and amortization	16,670	17,873	48,637	47,008
Total operating expenses	70,355	68,695	208,285	202,647
Operating income (loss)	1,487	(1,771)	6,584	(5,288)
Operating Segments \| Broadband
External revenue
Service revenue and other	67,449	62,386	201,329	183,512
Operating expenses
Selling, general and administrative	14,615	13,946	46,110	41,376
Restructuring expense		169		629
Impairment expense	1,532	477	2,552	4,884
Depreciation and amortization	15,729	16,791	45,902	42,724
Total operating expenses	58,142	57,576	171,011	166,414
Operating income (loss)	9,307	4,810	30,318	17,098
Operating Segments \| Tower
External revenue
Service revenue and other	4,644	4,677	13,973	14,226
Operating expenses
Selling, general and administrative	304	258	1,103	982
Restructuring expense		0		0
Impairment expense	0	0	0	0
Depreciation and amortization	549	445	1,600	1,562
Total operating expenses	2,547	2,087	6,968	6,598
Operating income (loss)	2,097	2,590	7,005	7,628
Intersegment Eliminations
External revenue
Service revenue and other	0	(47)	0	0
Intersegment Eliminations \| Broadband
External revenue
Service revenue and other	215	25	321	124
Intersegment Eliminations \| Tower
External revenue
Service revenue and other	36	67	112	255
Intersegment Eliminations \| Corporate & Eliminations
External revenue
Service revenue and other	(251)	(139)	(433)	(379)
Corporate, Non-Segment
Operating expenses
Selling, general and administrative	9,483	8,023	29,489	26,794
Restructuring expense		472		402
Impairment expense	0	0	0	0
Depreciation and amortization	392	637	1,135	2,722
Total operating expenses	9,666	9,032	30,306	29,635
Operating income (loss)	(9,917)	(9,171)	(30,739)	(30,014)
Residential & SMB - Cable Markets
External revenue
Service revenue and other	43,679	43,805	132,838	131,141
Residential & SMB - Cable Markets \| Operating Segments \| Broadband
External revenue
Service revenue and other	43,679	43,805	132,838	131,141
Residential & SMB - Cable Markets \| Operating Segments \| Tower
External revenue
Service revenue and other	0	0	0	0
Residential & SMB - Glo Fiber Markets
External revenue
Service revenue and other	9,325	4,895	24,492	12,371
Residential & SMB - Glo Fiber Markets \| Operating Segments \| Broadband
External revenue
Service revenue and other	9,325	4,895	24,492	12,371
Residential & SMB - Glo Fiber Markets \| Operating Segments \| Tower
External revenue
Service revenue and other	0	0	0	0
Commercial Fiber
External revenue
Service revenue and other	10,415	9,522	32,366	27,924
Commercial Fiber \| Operating Segments \| Broadband
External revenue
Service revenue and other	10,415	9,522	32,366	27,924
Commercial Fiber \| Operating Segments \| Tower
External revenue
Service revenue and other	0	0	0	0
Tower lease
External revenue
Service revenue and other	4,608	4,610	13,861	13,971
Tower lease \| Operating Segments \| Broadband
External revenue
Service revenue and other	0	0	0	0
Tower lease \| Operating Segments \| Tower
External revenue
Service revenue and other	4,608	4,610	13,861	13,971
RLEC & Other
External revenue
Service revenue and other	3,815	4,139	11,312	11,952
RLEC & Other \| Operating Segments \| Broadband
External revenue
Service revenue and other	3,815	4,139	11,312	11,952
RLEC & Other \| Operating Segments \| Tower
External revenue
Service revenue and other	0	0	0	0
Service revenue and other
External revenue
Service revenue and other	71,842	66,971	214,869	197,359
Service revenue and other \| Operating Segments \| Broadband
External revenue
Service revenue and other	67,234	62,361	201,008	183,388
Service revenue and other \| Operating Segments \| Tower
External revenue
Service revenue and other	4,608	4,610	13,861	13,971
Cost of services
Operating expenses
Cost of services	27,751	27,477	80,394	80,572
Cost of services \| Operating Segments \| Broadband
Operating expenses
Cost of services	26,266	26,193	76,447	76,801
Cost of services \| Operating Segments \| Tower
Operating expenses
Cost of services	1,694	1,384	4,265	4,054
Cost of services \| Corporate, Non-Segment
Operating expenses
Cost of services	$ (209)	$ (100)	$ (318)	$ (283)

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