Summary Of Significant Accounting Policies (Components Of Accumulated Other Comprehensive Loss) (Details)	6 Months Ended
	Jun. 30, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	$ 61,632,692
BALANCE	55,843,976
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(704,000)
Net current period change	33,000
BALANCE	(671,000)
Unrealized (Loss)/Gain On Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	17,000
Net current period change	(3,000)
BALANCE	14,000
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(686,661)
Net current period change	30,000
BALANCE	$ (657,392)