Goodwill And Other Intangible Assets (Schedule Of Changes In Carrying Value Of Goodwill) (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2011 Suttle [Member]	Sep. 30, 2011 Suttle [Member]	Sep. 30, 2012 Suttle [Member]	Sep. 30, 2012 Transition Networks [Member]	Sep. 30, 2011 Transition Networks [Member]
Goodwill [Line Items]
Goodwill, beginning balance			$ 5,990,571	$ 4,560,217		$ 1,271,986		$ 5,990,571	$ 3,288,231
Impairment loss	0	0	0	(1,271,986)	(1,272,000)	(1,271,986)
Acquisition				2,702,340					2,702,340
Foreign currency translation			(31,803)					(31,803)
Goodwill, ending balance	5,958,768	5,990,571	5,958,768	5,990,571				5,958,768	5,990,571
Gross goodwill	7,230,754		7,230,754				1,271,986	5,958,768
Accumulated impairment loss	(1,271,986)		(1,271,986)				(1,271,986)
Balance at September 30, 2012	$ 5,958,768	$ 5,990,571	$ 5,958,768	$ 5,990,571				$ 5,958,768	$ 5,990,571