Summary of Significant Accounting Policies (Components of Accumulated Other Comprehensive Loss) (Details)	3 Months Ended
	Mar. 31, 2019 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	$ 41,653,127
BALANCE	42,101,265
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(764,000)
Net current period change	28,000
BALANCE	(736,000)
Unrealized (Loss)/Gain On Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	13,000
Net current period change	0
BALANCE	13,000
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(751,293)
Net current period change	28,000
BALANCE	$ (722,675)