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Segment Reporting - Selected Financial Data for Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
External revenue
Service revenue and other	$ 66,021	$ 60,700	$ 130,435	$ 120,391
Operating expenses
Cost of services exclusive of depreciation and amortization	26,756	24,648	53,095	48,072
Selling, general and administrative	23,090	20,320	46,925	40,473
Restructuring expense	454	43	390	661
Impairment expense	4,068	0	4,407	99
Depreciation and amortization	14,790	13,299	29,135	26,466
Operating income (loss)	(3,137)	2,390	(3,517)	4,620
Operating Segments
Operating expenses
Selling, general and administrative	23,090	20,320	46,925	40,473
Restructuring expense	454	43	390	661
Impairment expense	4,068		4,407	99
Depreciation and amortization	14,790	13,299	29,135	26,466
Total operating expenses	69,158	58,310	133,952	115,771
Operating income (loss)	(3,137)	2,390	(3,517)	4,620
Operating Segments | Broadband
External revenue
Service revenue and other	61,412	56,227	121,126	111,381
Operating expenses
Selling, general and administrative	13,958	12,806	27,430	23,531
Restructuring expense	443	27	460	132
Impairment expense	4,068		4,407	99
Depreciation and amortization	13,396	11,775	25,933	23,437
Total operating expenses	57,305	48,048	108,838	92,916
Operating income (loss)	4,107	8,179	12,288	18,465
Operating Segments | Tower
External revenue
Service revenue and other	4,702	4,614	9,549	9,279
Operating expenses
Selling, general and administrative	406	338	724	572
Restructuring expense	0	0	0	0
Impairment expense	0		0	0
Depreciation and amortization	633	449	1,117	930
Total operating expenses	2,417	2,105	4,511	4,068
Operating income (loss)	2,285	2,509	5,038	5,211
Intersegment Eliminations
External revenue
Service revenue and other	43	4,556	47	9,151
Intersegment Eliminations | Broadband
External revenue
Service revenue and other	49	2,102	99	4,310
Intersegment Eliminations | Tower
External revenue
Service revenue and other	87	2,595	188	5,110
Intersegment Eliminations | Corporate & Eliminations
External revenue
Service revenue and other	(93)	(141)	(240)	(269)
Corporate, Non-Segment
Operating expenses
Selling, general and administrative	8,726	7,176	18,771	16,370
Restructuring expense	11	16	(70)	529
Impairment expense	0		0	0
Depreciation and amortization	761	1,075	2,085	2,099
Total operating expenses	9,436	8,157	20,603	18,787
Operating income (loss)	(9,529)	(8,298)	(20,843)	(19,056)
Residential & SMB | Operating Segments
External revenue
Service revenue and other	47,899	43,989	94,812	86,919
Residential & SMB | Operating Segments | Broadband
External revenue
Service revenue and other	47,899	43,989	94,812	86,919
Residential & SMB | Operating Segments | Tower
External revenue
Service revenue and other	0	0	0	0
Commercial Fiber | Operating Segments
External revenue
Service revenue and other	9,340	6,531	18,402	12,916
Commercial Fiber | Operating Segments | Broadband
External revenue
Service revenue and other	9,340	6,531	18,402	12,916
Commercial Fiber | Operating Segments | Tower
External revenue
Service revenue and other	0	0	0	0
RLEC & Other | Operating Segments
External revenue
Service revenue and other	4,124	3,605	7,813	7,236
RLEC & Other | Operating Segments | Broadband
External revenue
Service revenue and other	4,124	3,605	7,813	7,236
RLEC & Other | Operating Segments | Tower
External revenue
Service revenue and other	0	0	0	0
Tower lease | Operating Segments
External revenue
Service revenue and other	4,615	2,019	9,361	4,169
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	4,615	2,019	9,361	4,169
Service revenue and other | Operating Segments
External revenue
Service revenue and other	65,978	56,144	130,388	111,240
Service revenue and other | Operating Segments | Broadband
External revenue
Service revenue and other	61,363	54,125	121,027	107,071
Service revenue and other | Operating Segments | Tower
External revenue
Service revenue and other	4,615	2,019	9,361	4,169
Cost of services | Operating Segments
Operating expenses
Cost of services exclusive of depreciation and amortization	26,756	24,648	53,095	48,072
Cost of services | Operating Segments | Broadband
Operating expenses
Cost of services exclusive of depreciation and amortization	25,440	23,440	50,608	45,717
Cost of services | Operating Segments | Tower
Operating expenses
Cost of services exclusive of depreciation and amortization	1,378	1,318	2,670	2,566
Cost of services | Corporate, Non-Segment
Operating expenses
Cost of services exclusive of depreciation and amortization	$ (62)	$ (110)	$ (183)	$ (211)

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