Equipment and Furnishings (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Equipment and Furnishings [Abstract]
Equipment and furnishings	$ 2,212,000	$ 2,811,000
Less - accumulated depreciation	(1,169,000)	(851,000)
Equipment and furnishings, net	1,042,892	1,959,667
Depreciation and amortization	$ 629,312	$ 536,631	$ 317,649