Goodwill And Intangible Assets (Schedule Of Changes In Carrying Amount Of Goodwill) (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)
Goodwill [Line Items]
January 1, 2017		$ 1,462,503
Impairment loss	$ (1,617,389)	(1,617,389)
JDL Technologies [Member]
Goodwill [Line Items]
January 1, 2017		1,463,000
Impairment loss	(1,463,000)	(1,463,000)
June 30, 2017
Gross goodwill	1,463,000	1,463,000
Accumulated impairment loss	$ (1,463,000)	$ (1,463,000)