Schedule of 2010 Non-Qualified Stock Option Plan (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year	5,040,450	5,169,200
Options granted	526,500	50,000
Options outstanding, end of year	4,303,900	5,040,450
2010 Non-Qualified Stock Option Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year	830,000	780,000
Options granted	85,000	50,000
Options outstanding, end of year	915,000	830,000