Income Taxes (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Tax at Federal statutory rate	$ (141,419)	$ 371,003
Increase (reduction) in income taxes resulting from:
State and local taxes	543,278	355,888
Non-deductible expenses	200,464	(50,579)
Stock compensation	509,951	1,273,956
Net effect of foreign operations	79,607	(14,022)
Uncertain tax positions	(60,994)	(41,482)
Impact of U.S tax reform	0	14,295,386
Change in valuation allowance	(1,241,052)	(15,072,298)
Foreign withholding taxes	143,120	468,376
Decrease in unrecognized tax benefits	0	(1,427,906)
Other	200,333	(150,716)
Total provision (benefit) for income taxes	$ 233,288	$ 7,606