Goodwill And Intangible Assets (Schedule Of Changes In Carrying Value Of Goodwill) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2013	Dec. 31, 2015
Goodwill [Line Items]
January 1, 2015
Goodwill acquired	$ 1,463,000
Impairment loss		$ (5,849,853)
December 31, 2015	$ 1,462,503
Gross goodwill			$ 1,463,000
Accumulated impairment loss
Balance at December 31, 2015			$ 1,462,503
Transition Networks [Member]
Goodwill [Line Items]
Impairment loss		$ (5,850,000)