Summary of Significant Accounting Policies, Goodwill and Intangible Assets (Details) (USD $)	12 Months Ended				31 Months Ended	41 Months Ended												12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2006	Dec. 31, 2012	May 31, 2010	Dec. 31, 2012 Cable Franchise Rights [Member]	Dec. 31, 2011 Cable Franchise Rights [Member]	Dec. 31, 2012 Railroad Crossing Rights [Member]	Dec. 31, 2011 Railroad Crossing Rights [Member]	Dec. 31, 2012 Business Contracts [Member]	Dec. 31, 2011 Business Contracts [Member]	Jul. 08, 2010 Business Contracts [Member]	Dec. 31, 2012 Cable Franchise Rights [Member]	Dec. 31, 2011 Cable Franchise Rights [Member]	Dec. 31, 2012 Acquired subscriber base [Member]	Dec. 31, 2011 Acquired subscriber base [Member]	Dec. 31, 2012 CATV Segment [Member]	Dec. 31, 2011 CATV Segment [Member]	Dec. 31, 2012 Wireline [Member]	Dec. 31, 2011 Wireline [Member]
Goodwill [Roll Forward]
Balance as of year end	$ 10,962,000	$ 10,962,000																$ 10,952,000	$ 10,952,000	$ 10,000	$ 10,000
No activity		0																	0		0
Impairment recognized	(10,952,000)	0	0															(10,952,000)		0
Balance at end of period	10,000	10,962,000	10,962,000		10,000													0	10,952,000	10,000	10,000
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	34,516,000	34,257,000			34,516,000						2,069,000	2,054,000		122,000	0	32,325,000	32,203,000
Accumulated amortization	(23,682,000)	(17,131,000)			(23,682,000)						(354,000)	(238,000)		(122,000)	0	(23,206,000)	(16,893,000)
Net	10,834,000	17,126,000			10,834,000						1,715,000	1,816,000		0	0	9,119,000	15,310,000
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount													6,900,000
Amortization expense	6,500,000	10,400,000	6,100,000
Indefinite-Lived Intangible Assets (Excluding Goodwill) [Abstract]
Gross Carrying Amount	64,098,000	64,220,000			64,098,000		64,059,000	64,181,000	39,000	39,000
Net	64,098,000	64,220,000			64,098,000		64,059,000	64,181,000	39,000	39,000
Total intangibles, gross carrying amount	98,614,000	98,477,000			98,614,000
Total net	74,932,000	81,346,000			74,932,000
Amortization expense for intangible assets [Abstract]
2013	4,139,000				4,139,000
2014	2,566,000				2,566,000
2015	1,411,000				1,411,000
2016	943,000				943,000
2017	$ 514,000				$ 514,000
Management Fee [Abstract]
Management fee (in hundredths)	8.00%
Net service fee (in hundredths)	12.00%			8.80%	12.00%	8.80%
Maximum net service fee (in hundredths)	14.00%
Management fee retained (in hundredths)	6.00%