Summary of Significant Accounting Policies (Components of Accumulated Other Comprehensive Loss) (Details)	9 Months Ended
	Sep. 30, 2020 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	$ 47,392,282
BALANCE	47,242,031
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(709,000)
Net current period change	(60,000)
BALANCE	(769,000)
Unrealized gain (loss) on securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	11,000
Net current period change	(5,000)
BALANCE	6,000
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(697,664)
Net current period change	(65,000)
BALANCE	$ (763,323)