Segment Reporting - Selected Financial Data for Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
External revenue
Service revenue and other	$ 71,341	$ 66,021	$ 143,027	$ 130,435
Operating expenses
Cost of services	26,076	26,756	52,643	53,095
Selling, general and administrative	25,691	23,090	52,300	46,925
Restructuring expense	0	454	0	390
Impairment expense	836	4,068	1,020	4,407
Depreciation and amortization	16,369	14,790	31,967	29,135
Operating income (loss)	2,369	(3,137)	5,097	(3,517)
Operating Segments
Operating expenses
Selling, general and administrative	25,691	23,090	52,300	46,925
Restructuring expense		454		390
Impairment expense	836	4,068	1,020	4,407
Depreciation and amortization	16,369	14,790	31,967	29,135
Total operating expenses	68,972	69,158	137,930	133,952
Operating income (loss)	2,369	(3,137)	5,097	(3,517)
Operating Segments | Broadband
External revenue
Service revenue and other	66,677	61,412	133,880	121,126
Operating expenses
Selling, general and administrative	15,924	13,958	31,495	27,430
Restructuring expense		443		460
Impairment expense	836	4,068	1,020	4,407
Depreciation and amortization	15,490	13,396	30,173	25,933
Total operating expenses	57,002	57,305	112,869	108,838
Operating income (loss)	9,675	4,107	21,011	12,288
Operating Segments | Tower
External revenue
Service revenue and other	4,753	4,702	9,329	9,549
Operating expenses
Selling, general and administrative	349	406	799	724
Restructuring expense		0		0
Impairment expense	0	0	0	0
Depreciation and amortization	538	633	1,051	1,117
Total operating expenses	2,266	2,417	4,421	4,511
Operating income (loss)	2,487	2,285	4,908	5,038
Intersegment Eliminations
External revenue
Service revenue and other	0	43	0	47
Intersegment Eliminations | Broadband
External revenue
Service revenue and other	51	49	106	99
Intersegment Eliminations | Tower
External revenue
Service revenue and other	38	87	76	188
Intersegment Eliminations | Corporate & Eliminations
External revenue
Service revenue and other	(89)	(93)	(182)	(240)
Corporate, Non-Segment
Operating expenses
Selling, general and administrative	9,418	8,726	20,006	18,771
Restructuring expense		11		(70)
Impairment expense	0	0	0	0
Depreciation and amortization	341	761	743	2,085
Total operating expenses	9,704	9,436	20,640	20,603
Operating income (loss)	(9,793)	(9,529)	(20,822)	(20,843)
Residential & SMB - Cable Markets | Operating Segments
External revenue
Service revenue and other	44,403	43,843	89,159	87,336
Residential & SMB - Cable Markets | Operating Segments | Broadband
External revenue
Service revenue and other	44,403	43,843	89,159	87,336
Residential & SMB - Cable Markets | Operating Segments | Tower
External revenue
Service revenue and other	0	0	0	0
Residential & SMB - Glo Fiber Markets | Operating Segments
External revenue
Service revenue and other	8,164	4,056	15,167	7,476
Residential & SMB - Glo Fiber Markets | Operating Segments | Broadband
External revenue
Service revenue and other	8,164	4,056	15,167	7,476
Residential & SMB - Glo Fiber Markets | Operating Segments | Tower
External revenue
Service revenue and other	0	0	0	0
Commercial Fiber | Operating Segments
External revenue
Service revenue and other	10,253	9,340	21,951	18,402
Commercial Fiber | Operating Segments | Broadband
External revenue
Service revenue and other	10,253	9,340	21,951	18,402
Commercial Fiber | Operating Segments | Tower
External revenue
Service revenue and other	0	0	0	0
Tower lease | Operating Segments
External revenue
Service revenue and other	4,715	4,615	9,253	9,361
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	4,715	4,615	9,253	9,361
RLEC & Other | Operating Segments
External revenue
Service revenue and other	3,806	4,124	7,497	7,813
RLEC & Other | Operating Segments | Broadband
External revenue
Service revenue and other	3,806	4,124	7,497	7,813
RLEC & Other | Operating Segments | Tower
External revenue
Service revenue and other	0	0	0	0
Service revenue and other | Operating Segments
External revenue
Service revenue and other	71,341	65,978	143,027	130,388
Service revenue and other | Operating Segments | Broadband
External revenue
Service revenue and other	66,626	61,363	133,774	121,027
Service revenue and other | Operating Segments | Tower
External revenue
Service revenue and other	4,715	4,615	9,253	9,361
Cost of services | Operating Segments
Operating expenses
Cost of services	26,076	26,756	52,643	53,095
Cost of services | Operating Segments | Broadband
Operating expenses
Cost of services	24,752	25,440	50,181	50,608
Cost of services | Operating Segments | Tower
Operating expenses
Cost of services	1,379	1,378	2,571	2,670
Cost of services | Corporate, Non-Segment
Operating expenses
Cost of services	$ (55)	$ (62)	$ (109)	$ (183)