Goodwill And Other Intangible Assets (Schedule Of Changes In Carrying Value Of Goodwill) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]
Goodwill, beginning balance	$ 5,956,934	$ 5,990,571	$ 5,990,571
Foreign currency translation	(159,263)
Goodwill, ending balance	5,797,671	5,990,571	5,990,571
Gross goodwill	7,069,657
Accumulated impairment loss	(1,271,986)
Balance at March 31, 2013	5,797,671	5,990,571	5,990,571
Suttle [Member]
Goodwill [Line Items]
Gross goodwill	1,271,986
Accumulated impairment loss	(1,271,986)
Transition Networks [Member]
Goodwill [Line Items]
Goodwill, beginning balance	5,956,934	5,990,571	5,990,571
Foreign currency translation	(159,263)
Goodwill, ending balance	5,797,671	5,990,571	5,990,571
Gross goodwill	5,797,671
Balance at March 31, 2013	$ 5,797,671	$ 5,990,571	$ 5,990,571