Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013 Segment State	Jun. 30, 2012	Jun. 30, 2013 State	Jun. 30, 2012	Dec. 31, 2012
Segment Information [Abstract]
Number of reportable segments	3
Non Sprint-Nextel operations, number of states	4		4
External revenues [Abstract]
Service revenues	$ 67,846	$ 60,207	$ 133,192	$ 118,530
Other revenues	9,608	11,171	20,271	21,671
Total external revenues	77,454	71,378	153,463	140,201
Internal revenues	0	0	0	0
Total operating revenues	77,454	71,378	153,463	140,201
Operating expenses [Abstract]
Cost of goods and services, exclusive of depreciation and amortization shown separately below	30,528	29,969	61,229	58,998
Selling, general and administrative, exclusive of depreciation and amortization shown separately below	16,355	15,013	32,484	30,182
Depreciation and amortization	16,071	15,259	30,042	31,066
Total operating expenses	62,954	60,241	123,755	120,246
Operating income (loss)	14,500	11,137	29,708	19,955
Reconciliation of income from continuing operations from segments to consolidated [Abstract]
Total consolidated operating income	14,500	11,137	29,708	19,955
Interest expense	(2,068)	(1,522)	(4,220)	(3,317)
Non-operating income (expense), net	488	391	1,157	1,049
Income from continuing operations before income taxes	12,920	10,006	26,645	17,687
Assets by segment [Abstract]
Assets	596,082		596,082		570,740
Wireless [Member]
External revenues [Abstract]
Service revenues	46,362	40,187	90,427	78,589
Other revenues	2,328	3,233	5,347	6,684
Total external revenues	48,690	43,420	95,774	85,273
Internal revenues	1,076	843	2,149	1,658
Total operating revenues	49,766	44,263	97,923	86,931
Operating expenses [Abstract]
Cost of goods and services, exclusive of depreciation and amortization shown separately below	17,854	16,917	35,385	33,310
Selling, general and administrative, exclusive of depreciation and amortization shown separately below	9,064	8,102	17,835	16,096
Depreciation and amortization	7,782	6,753	13,809	14,510
Total operating expenses	34,700	31,772	67,029	63,916
Operating income (loss)	15,066	12,491	30,894	23,015
Reconciliation of income from continuing operations from segments to consolidated [Abstract]
Total consolidated operating income	15,066	12,491	30,894	23,015
Assets by segment [Abstract]
Assets	200,826		200,826		179,929
Cable [Member]
External revenues [Abstract]
Service revenues	17,564	16,356	34,945	32,410
Other revenues	2,527	2,577	5,002	5,037
Total external revenues	20,091	18,933	39,947	37,447
Internal revenues	53	79	102	150
Total operating revenues	20,144	19,012	40,049	37,597
Operating expenses [Abstract]
Cost of goods and services, exclusive of depreciation and amortization shown separately below	12,353	11,560	24,642	23,786
Selling, general and administrative, exclusive of depreciation and amortization shown separately below	5,566	5,254	11,004	10,301
Depreciation and amortization	5,847	6,203	11,411	12,055
Total operating expenses	23,766	23,017	47,057	46,142
Operating income (loss)	(3,622)	(4,005)	(7,008)	(8,545)
Reconciliation of income from continuing operations from segments to consolidated [Abstract]
Total consolidated operating income	(3,622)	(4,005)	(7,008)	(8,545)
Assets by segment [Abstract]
Assets	210,434		210,434		202,436
Wireline [Member]
External revenues [Abstract]
Service revenues	3,920	3,664	7,820	7,531
Other revenues	4,753	5,361	9,922	9,950
Total external revenues	8,673	9,025	17,742	17,481
Internal revenues	5,169	4,757	9,808	9,210
Total operating revenues	13,842	13,782	27,550	26,691
Operating expenses [Abstract]
Cost of goods and services, exclusive of depreciation and amortization shown separately below	6,084	6,518	12,183	11,747
Selling, general and administrative, exclusive of depreciation and amortization shown separately below	1,661	1,638	3,371	3,354
Depreciation and amortization	2,433	2,285	4,805	4,458
Total operating expenses	10,178	10,441	20,359	19,559
Operating income (loss)	3,664	3,341	7,191	7,132
Reconciliation of income from continuing operations from segments to consolidated [Abstract]
Total consolidated operating income	3,664	3,341	7,191	7,132
Assets by segment [Abstract]
Assets	89,522		89,522		88,776
Other [Member]
External revenues [Abstract]
Service revenues	0	0	0	0
Other revenues	0	0	0	0
Total external revenues	0	0	0	0
Internal revenues	0	0	0	0
Total operating revenues	0	0	0	0
Operating expenses [Abstract]
Cost of goods and services, exclusive of depreciation and amortization shown separately below	0	7	0	24
Selling, general and administrative, exclusive of depreciation and amortization shown separately below	599	665	1,352	1,580
Depreciation and amortization	9	18	17	43
Total operating expenses	608	690	1,369	1,647
Operating income (loss)	(608)	(690)	(1,369)	(1,647)
Reconciliation of income from continuing operations from segments to consolidated [Abstract]
Total consolidated operating income	(608)	(690)	(1,369)	(1,647)
Assets by segment [Abstract]
Assets	465,761		465,761		458,650
Eliminations [Member]
External revenues [Abstract]
Service revenues	0	0	0	0
Other revenues	0	0	0	0
Total external revenues	0	0	0	0
Internal revenues	(6,298)	(5,679)	(12,059)	(11,018)
Total operating revenues	(6,298)	(5,679)	(12,059)	(11,018)
Operating expenses [Abstract]
Cost of goods and services, exclusive of depreciation and amortization shown separately below	(5,763)	(5,033)	(10,981)	(9,869)
Selling, general and administrative, exclusive of depreciation and amortization shown separately below	(535)	(646)	(1,078)	(1,149)
Depreciation and amortization	0	0	0	0
Total operating expenses	(6,298)	(5,679)	(12,059)	(11,018)
Operating income (loss)	0	0	0	0
Reconciliation of income from continuing operations from segments to consolidated [Abstract]
Total consolidated operating income	0	0	0	0
Assets by segment [Abstract]
Assets	(370,461)		(370,461)		(359,051)
Total Segments [Member]
Assets by segment [Abstract]
Assets	$ 966,543		$ 966,543		$ 929,791