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Common Stock and Share-Based Compensation - Options Outstanding and Exercisable (Details)
12 Months Ended
Dec. 31, 2019
$ / shares
shares
8.96  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number Outstanding (shares) | shares 34,706
Weighted- Average Remaining Contractual Life (in years) 1 year 1 month 20 days
Weighted-Average Exercise Price (USD per share) $ 8.96
Exercise price (USD per share) $ 8.96
10.44  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number Outstanding (shares) | shares 33,426
Weighted- Average Remaining Contractual Life (in years) 2 years 1 month 17 days
Weighted-Average Exercise Price (USD per share) $ 10.44
Exercise price (USD per share) $ 10.44
12.60  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number Outstanding (shares) | shares 61,711
Weighted- Average Remaining Contractual Life (in years) 3 days
Weighted-Average Exercise Price (USD per share) $ 12.60
Exercise price (USD per share) $ 12.60
15.42  
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]  
Number Outstanding (shares) | shares 11,551
Weighted- Average Remaining Contractual Life (in years) 2 days
Weighted-Average Exercise Price (USD per share) $ 15.42
Exercise price (USD per share) $ 15.42