Schedule Of Non-qualified Stock Options (Details) - Non-Qualified Stock Option [Member] - $ / shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Offsetting Assets [Line Items]
Number of Stock Options, Options outstanding, beginning of year	164,167	234,167
Weighted Exercise Price, Option outstanding, beginning of year	$ 3.13	$ 2.47
Number of Stock Options, Granted
Weighted Exercise Price, Granted
Number of Stock Options, Redeemed	(26,250)	(36,250)
Weighted Exercise Price, Redeemed	$ 1.51	$ 0.83
Number of Stock Options, Exercised	(7,500)	(22,500)
Weighted Exercise Price, Exercised	$ 1.51	$ 0.89
Number of Stock Options, Expired / terminated
Weighted Exercise Price, Expired / terminated
Number of Stock Options, Options outstanding, end of period	130,417	175,417
Weighted Exercise Price, Option outstanding end of period	$ 3.55	$ 3.01
Number of Stock Options, Options exercisable, end of period	130,417	175,417
Weighted Exercise Price, Options exercisable, end of period	$ 3.55	$ 3.01