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Stockholders Equity (Details Narrative) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Aug. 05, 2020
Dividends declared	$ 427,217	$ 675,960
Stock-based compensation expense related to stock options is net of estimated forfeitures	$ 14,000	$ 17,000
Stock-based compensation expense related to stock options is net of estimated forfeitures, rate	16.00%	1.40%
stock based compensation	$ 481,000	$ 472,000
Estimated fair value of unamortized compensation cost related to unvested stock option awards	$ 50,000
Aggregate intrinsic value, Options Outstanding and Options Exercisable	$ 8.54
Average Intrinsic Value, Expired	$ 0
Common stock shares authorized	20,000,000		20,000,000
Black - Scholes Option Pricing Model [Member]
Dividend per share	$ 1.66
Plan 2014 Member
Shares reserved for grants	556,357
Board Of Directors [Member] | Plan 2014 Member
Common stock shares authorized	700,000			1,400,000

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