Goodwill And Other Intangible Assets (Components Of Identified Intangible Assets) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Goodwill And Other Intangible Assets [Line Items]
Net Identified Intangible Assets	$ 28,609,193	$ 20,215,961
Gross Carrying Amount	38,448,445	27,978,445
Accumulated Amortization	9,839,252	7,762,484
Useful Lives (In Years)	13 years
Customer Relationships [Member]
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	29,278,445	19,378,445
Accumulated Amortization	6,905,929	5,522,504
Customer Relationships [Member] | Minimum [Member]
Goodwill And Other Intangible Assets [Line Items]
Useful Lives (In Years)	14 years
Customer Relationships [Member] | Maximum [Member]
Goodwill And Other Intangible Assets [Line Items]
Useful Lives (In Years)	15 years
Regulatory Rights [Member]
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	4,000,000	4,000,000
Accumulated Amortization	1,333,323	1,066,659
Useful Lives (In Years)	15 years
Non-Competition Agreement [Member]
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	800,000	800,000
Accumulated Amortization	800,000	639,988
Useful Lives (In Years)	5 years
Trade Name [Member]
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	1,370,000	800,000
Accumulated Amortization	800,000	533,333
Useful Lives (In Years)	3 years
Video Franchise [Member]
Goodwill And Other Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,000,000	$ 3,000,000