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Stockholders Equity (Details Narrative) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Jun. 15, 2022	Dec. 31, 2021	Aug. 05, 2020
Dividends declared	$ 425,490	$ 427,217
Stock based compensation for stock options	6,000	14,000
Share-based compensation under offering	6,000	0
Stock based compensation for grants	$ 518,000	$ 481,000
Weighted-average vesting period	6 months
Fair value of unamortized compensation cost	$ 3,000
Maximum share purchase under ESPP	750,000
Maximum share purchased by employee	5,000
Closing price of common stock	$ 5.32
Common stock shares authorized	20,000,000			20,000,000
Held-to-Maturity Securities US Treasury Securities [Member]
Common stock shares authorized	700,000				1,400,000
Subsequent Event [Member] | Board Of Directors [Member] | February 2, 2022 [Member]
Dividend per share			$ 0.04

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