Goodwill And Intangible Assets (Schedule Of Changes In Carrying Amount Of Goodwill) (Details) - USD ($)	3 Months Ended
Mar. 31, 2017	Mar. 31, 2017
Goodwill [Line Items]
January 1, 2017	$ 1,462,503
March 31, 2017	1,462,503
Balance at March 31, 2017	1,462,503	$ 1,462,503
JDL Technologies [Member]
Goodwill [Line Items]
January 1, 2017	1,463,000
Goodwill acquired
March 31, 2017	1,463,000
Gross goodwill		1,463,000
Accumulated impairment loss
Balance at March 31, 2017	$ 1,463,000	$ 1,463,000

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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