Stockholders' Equity - Schedule of Nonvested Stock Option (Details) - Equity Incentive 2011 Plan [Member] - $ / shares	6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Common shares, nonvested beginning of period	600,779	300,510	300,510
Common shares, granted	217,580	30,542	586,552
Common shares, vested	(123,330)		(197,202)
Common shares, forfeited	(5,333)		(89,081)
Common shares, nonvested end of period	689,696		600,779	300,510
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted average grant date fair value, nonvested beginning of period	$ 0.64	$ 0.80	$ 0.80
Weighted average grant date fair value, granted	0.16	$ 0.91	0.40
Weighted average grant date fair value, vested	0.80		1.44
Weighted average grant date fair value, forfeited	1.04		0.80
Weighted average grant date fair value, nonvested end of period	$ 0.48		$ 0.64	$ 0.80
Weighted average remaining years to vest (in years)	2 years 7 months 6 days		3 years	2 years 4 months 24 days