Property And Equipment (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 11,120,416	$ 11,120,416
Less: Accumulated depreciation	(10,150,489)	(10,053,095)
Net property and equipment	969,927	1,067,321
Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	8,496,636	8,496,636
Equipment Held For Lease [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	303,412	303,412
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property and equipment	$ 2,320,368	$ 2,320,368