Major Customer and Geographic Information (Schedule of Revenue by Geographic Region) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 1,873,700	$ 359,600	$ 2,299,100	$ 701,000
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,674,400	136,700	1,859,300	311,800
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues			1,500
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	100	200	100	200
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	199,200	215,300	438,200	374,200
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		$ 7,400		$ 14,800