Stockholders' Equity - Schedule of Non-qualified Stock Options (Details) - Non-Qualified Stock Option [Member] - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Number of Stock Options, Options outstanding, beginning of year	279,167	531,667
Number of Stock Options, Granted
Number of Stock Options, Redeemed	(34,225)	(220,523)
Number of Stock Options, Exercised	(10,775)	(10,700)
Number of Stock Options, Expired / terminated		(21,277)
Number of Stock Options, Options outstanding, end of year	234,167	279,167
Number of Stock Options, Options exercisable, end of year	234,167	279,167
Weighted Exercise Price, Option outstanding, beginning of year	$ 2.34	$ 1.85
Weighted Exercise Price, Granted
Weighted Exercise Price, Redeemed	1.13	1.30
Weighted Exercise Price, Exercised	1.06	1.40
Weighted Exercise Price, Expired / terminated		1.40
Weighted Exercise Price, Option outstanding end of year	2.47	2.34
Weighted Exercise Price, Options exercisable, end of year	$ 2.47	$ 2.34