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Operating Expenses, Stock Compensation Series (Details) - Restricted Shares [Member]
12 Months Ended
Dec. 31, 2021
shares
$ / shares
January 2017 [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 900,000
Vesting period 2 years
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 4.61
January 2018 One [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 355,000
Vesting period 1 year
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 3.92
January 2018 Two [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 212,000
Vesting period 3 years
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 2.30
January 2019 One [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 360,000
Vesting period 3 years
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 4.25
January 2019 Two [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 200,000
Vesting period 3 years
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 3.04
March 2019 [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 210,000
Vesting period 1 year
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 4.60
January 2020 One [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 460,000
Vesting period 3 years
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 8.22
January 2020 Two [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 150,000
Vesting period 1 year
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 8.22
January 2020 Three [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 200,000
Vesting period 1 year
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 3.56
January 2021 One [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 579,100
Vesting period 3 years
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 5.52
January 2021 Two [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 175,000
Vesting period 1 year
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 5.52
January 2021 Three [Member]  
Stock Compensation Series [Abstract]  
Number of restricted shares (in shares) | shares 119,900
Vesting period 3 years
Fair value at grant date of restricted shares (in dollars per share) | $ / shares $ 3.22