Marketable Equity Securities (Tables)

12 Months Ended

Dec. 31, 2020

Investments Debt And Equity Securities [Abstract]

Schedule of Investments in Marketable Equity Securities

Investments in marketable equity securities consisted of the following:

			Gross Unrealized
December 31, 2020	Cost Basis		Gains		Losses		Value
Investment in marketable equity securities
Common stocks	$	755,487	$	1,160,964	$	—	$	1,916,451
Total investment in marketable equity securities	$	755,487	$	1,160,964	$	—	$	1,916,451
			Gross Unrealized
December 31, 2019	Cost Basis		Gains		Losses		Value
Investment in marketable equity securities
Common stocks	$	755,487	$	1,005,825	$	—	$	1,761,312
Total investment in marketable equity securities	$	755,487	$	1,005,825	$	—	$	1,761,312