Income Taxes - US Statutory Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Federal income taxes at 21% statutory rate	$ 1,864,097	$ 1,365,124
State and local taxes, net of federal income tax effect	89,842	109,593
Permanent items	(99,877)	(137,051)
Foreign tax rate difference	(126,100)	(209,216)
Change in deferred income tax valuation allowance		(98,894)
Total Income Tax Expense	$ 1,727,962	$ 1,029,556