Schedule of 2010 Non-Qualified Stock Option Plan (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year	4,303,900	5,040,450
Options granted	649,850	526,500
Options outstanding, end of year	3,611,850	4,303,900
2010 Non-Qualified Stock Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year	915,000	830,000
Options granted	60,000	85,000
Options outstanding, end of year	975,000	915,000