Annual report pursuant to Section 13 and 15(d)

Capital Stock, Stock Plans, Warrants, and Stock Based Compensation - Schedule of Stock Options Roll Forward (Details) (Parenthetical)

v3.20.1
Capital Stock, Stock Plans, Warrants, and Stock Based Compensation - Schedule of Stock Options Roll Forward (Details) (Parenthetical) - Stock Option [Member] - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Stock option exercise price per share lower limit $ 2.79 $ 2.79
Stock option exercise price per share upper limit $ 8.40 $ 13.35