Summary Of Significant Accounting Policies (Components Of Accumulated Other Comprehensive Loss) (Details)	12 Months Ended
	Dec. 31, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	$ 61,632,692
BALANCE	49,170,727
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(704,000)
Net current period change	79,000
BALANCE	(625,000)
Unrealized (Loss)/Gain On Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	17,000
Net current period change	(5,000)
BALANCE	12,000
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(686,661)
Net current period change	74,000
BALANCE	$ (613,379)