Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Warrants Activity) (Details)

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Stockholders' Equity (Warrants Activity) (Details) - Warrants [Member] - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Class of Warrant or Right [Line Items]    
Warrants outstanding, beginning 5,402,670  
Warrants exercised (138)  
Warrants outstanding, ending 5,402,532 5,402,670
Warrant exercise price (in dollars per share) $ 8.21 $ 8.21
Warrant exercise price, exercised during the period (in dollars per share) $ 0  
Warrants outstanding, remaining contractual life 10 months 20 days 1 year 4 months 20 days