Segment Reporting - Selected Financial Data for Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
External revenue
Service revenue and other	$ 66,924	$ 62,244	$ 197,359	$ 182,635
Operating expenses
Cost of services exclusive of depreciation and amortization	27,477	25,747	80,572	73,819
Selling, general and administrative	22,227	20,238	69,152	60,711
Restructuring expense	641	1,160	1,031	1,821
Impairment expense	477	0	4,884	99
Depreciation and amortization	17,873	14,248	47,008	40,714
Operating (loss) income	(1,771)	851	(5,288)	5,471
Operating Segments
Operating expenses
Selling, general and administrative	22,227	20,238	69,152	60,711
Restructuring expense	641	1,160	1,031	1,821
Impairment expense	477		4,884	99
Depreciation and amortization	17,873	14,248	47,008	40,714
Total operating expenses	68,695	61,393	202,647	177,164
Operating (loss) income	(1,771)	851	(5,288)	5,471
Operating Segments | Broadband
External revenue
Service revenue and other	62,386	57,913	183,512	169,294
Operating expenses
Selling, general and administrative	13,946	11,898	41,376	35,429
Restructuring expense	169	71	629	203
Impairment expense	477		4,884	99
Depreciation and amortization	16,791	12,211	42,724	35,648
Total operating expenses	57,576	48,513	166,414	141,429
Operating (loss) income	4,810	9,400	17,098	27,865
Operating Segments | Tower
External revenue
Service revenue and other	4,677	4,449	14,226	13,728
Operating expenses
Selling, general and administrative	258	314	982	886
Restructuring expense	0	0	0	0
Impairment expense	0		0	0
Depreciation and amortization	445	468	1,562	1,398
Total operating expenses	2,087	2,286	6,598	6,354
Operating (loss) income	2,590	2,163	7,628	7,374
Intersegment Eliminations
External revenue
Service revenue and other	(47)	74	0	9,225
Intersegment Eliminations | Broadband
External revenue
Service revenue and other	25	99	124	4,409
Intersegment Eliminations | Tower
External revenue
Service revenue and other	67	93	255	5,203
Intersegment Eliminations | Corporate & Eliminations
External revenue
Service revenue and other	(139)	(118)	(379)	(387)
Corporate, Non-Segment
Operating expenses
Selling, general and administrative	8,023	8,026	26,794	24,396
Restructuring expense	472	1,089	402	1,618
Impairment expense	0		0	0
Depreciation and amortization	637	1,569	2,722	3,668
Total operating expenses	9,032	10,594	29,635	29,381
Operating (loss) income	(9,171)	(10,712)	(30,014)	(29,768)
Residential & SMB | Operating Segments
External revenue
Service revenue and other	48,700	44,783	143,512	131,702
Residential & SMB | Operating Segments | Broadband
External revenue
Service revenue and other	48,700	44,783	143,512	131,702
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	9,522	9,059	27,924	21,975
Commercial Fiber | Operating Segments | Broadband
External revenue
Service revenue and other	9,522	9,059	27,924	21,975
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	4,139	3,972	11,952	11,208
RLEC & Other | Operating Segments | Broadband
External revenue
Service revenue and other	4,139	3,972	11,952	11,208
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	4,610	4,356	13,971	8,525
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	4,610	4,356	13,971	8,525
Service revenue and other | Operating Segments
External revenue
Service revenue and other	66,971	62,170	197,359	173,410
Service revenue and other | Operating Segments | Broadband
External revenue
Service revenue and other	62,361	57,814	183,388	164,885
Service revenue and other | Operating Segments | Tower
External revenue
Service revenue and other	4,610	4,356	13,971	8,525
Cost of services | Operating Segments
Operating expenses
Cost of services exclusive of depreciation and amortization	27,477	25,747	80,572	73,819
Cost of services | Operating Segments | Broadband
Operating expenses
Cost of services exclusive of depreciation and amortization	26,193	24,333	76,801	70,050
Cost of services | Operating Segments | Tower
Operating expenses
Cost of services exclusive of depreciation and amortization	1,384	1,504	4,054	4,070
Cost of services | Corporate, Non-Segment
Operating expenses
Cost of services exclusive of depreciation and amortization	$ (100)	$ (90)	$ (283)	$ (301)