Earnings Per Share - Potentially Dilutive Securities (Details) - shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total potentially dilutive securities 19,333,303 24,499,927
Warrant Common Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total potentially dilutive securities 19,333,303 1,023,745
2014 Equity Incentive Plan    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Total potentially dilutive securities   23,476,182