Goodwill And Other Intangible Assets (Schedule Of Changes In Carrying Value Of Goodwill) (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2011 Suttle [Member]	Jun. 30, 2011 Suttle [Member]	Jun. 30, 2012 Suttle [Member]	Jun. 30, 2011 Transition Networks [Member]	Jun. 30, 2012 Transition Networks [Member]	Dec. 31, 2011 Transition Networks [Member]
Goodwill [Line Items]
Goodwill, beginning balance			$ 5,990,571	$ 4,560,217		$ 1,271,986		$ 3,288,231	$ 5,990,571	$ 5,990,571
Impairment loss	0	(1,271,986)	0	(1,271,986)	(1,271,986)	(1,271,986)
Acquisition				2,702,340				2,702,340
Goodwill, ending balance	5,990,571	5,990,571	5,990,571	5,990,571				5,990,571	5,990,571	5,990,571
Gross goodwill	7,262,557		7,262,557				1,271,986		5,990,571
Accumulated impairment loss	(1,271,986)		(1,271,986)				(1,271,986)
Balance at June 30, 2012	$ 5,990,571	$ 5,990,571	$ 5,990,571	$ 5,990,571				$ 5,990,571	$ 5,990,571	$ 5,990,571