Major Customer and Geographic Information (Schedule of Revenue by Geographic Region) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 611,400	$ 520,300
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	169,700	183,400
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,500	1,400
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	413,500	335,500
Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 26,700	$ 0