1. UNAUDITED INTERIM FINANCIAL STATEMENTS: Income (Loss) Per Share: Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income:
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ 275,934	$ 50,607
Preferred stock dividends	(13,685)	(20,375)
Net income available to common shareholders	$ 262,249	$ 30,232
Basic income per share:
Weighted average shares and share equivalents outstanding –basic	16,470,654	14,539,675
Basic income per share	$ 0.02	$ 0.00
Diluted income per share:
Shares used in diluted income per share	19,341,419	16,501,851
Diluted income per share	$ 0.01	$ 0.00
Computation of shares used in income per share:
Weighted Average Number of Shares Outstanding, Basic	16,470,654	14,539,675
Effect of dilutive stock options	$ 2,586,500	$ 1,741,198
Effect of dilutive warrants	$ 284,265	$ 220,978
Weighted Average Number of Shares Outstanding, Diluted	19,341,419	16,501,851