Summary of Significant Accounting Policies (Components of Accumulated Other Comprehensive Loss) (Details)	6 Months Ended
	Jun. 30, 2020 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	$ 47,392,282
BALANCE	46,964,179
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(709,000)
Net current period change	(141,000)
BALANCE	(850,000)
Unrealized gain (loss) on securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	11,000
Net current period change	10,000
BALANCE	21,000
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(697,664)
Net current period change	(131,000)
BALANCE	$ (828,572)