Major Customer and Geographic Information (Schedule of Revenue by Geographic Region) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 425,400	$ 341,400
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	184,900	175,100
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,500	0
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	239,000	158,900
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 0	$ 7,400