Summary of Significant Accounting Policies (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	$ 41,653,127	$ 49,170,727
BALANCE	47,392,282	41,653,127
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(764,000)	(625,000)
Net current period change	55,000	(139,000)
BALANCE	(709,000)	(764,000)
Unrealized (loss)/gain on securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	13,000	12,000
Net current period change	(2,000)	1,000
BALANCE	11,000	13,000
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(751,293)	(613,379)
Net current period change	53,000	(138,000)
BALANCE	$ (697,664)	$ (751,293)