Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Accounting Policies [Abstract]
Net loss	$ (514,000)	$ (428,000)	$ (906,000)	$ (1,838,000)	$ (942,000)	$ (2,744,000)
Dividends	(392,000)		(382,000)		(1,274,000)	(765,000)
Net Loss allocable to common stockholders	$ (906,000)		$ (1,288,000)		$ (2,216,000)	$ (3,509,000)
Weighted average common shares outstanding used to compute net loss per share, basic and diluted	11,669,779		10,869,530		11,270,044	10,869,530
Net loss per share	$ (0.08)		$ (0.12)		$ (0.20)	$ (0.32)