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Stock Based Compensation, Stock Option Activity (Details) - Stock Options [Member] - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value $ 0 $ 76
Options outstanding [Roll Forward]    
Outstanding at beginning of period (in shares) 9,904 13,278
Granted (in shares) 0 0
Exercised (in shares) (9,593) 0
Expired (in shares) 0 0
Outstanding at end of period (in shares) 311 13,278
Exercisable at end of period (in shares) 311 13,278
Weighted average exercise price [Roll forward]    
Outstanding at beginning of period (in dollars per share) $ 11.96 $ 11.98
Granted (in dollars per share) 0 0
Exercised (in dollars per share) 11.94 0
Expired (in dollars per share) 0 0
Outstanding at end of period (in dollars per share) 12.60 11.98
Exercisable at end of period (in dollars per share) $ 12.60 $ 11.98
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value $ 0 $ 76