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Stock Compensation - Summary of Combined Restricted Stock Units Including Performance Based Restricted Stock Units and Restricted Stock Activity (Details) - Restricted Stock Units Including Performance Based Restricted Stock Units and Restricted Stock [Member]
12 Months Ended
Dec. 31, 2018
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Unvested (in shares) 412,650
Granted (in shares) 178,005
Vested (in shares) (104,737)
Forfeited (in shares) (62,123)
Unvested (in shares) 423,795
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]  
Granted, Average Grant Date Fair Value (in dollars per share) | $ / shares $ 21.65
Vested, Average Grant Date Fair Value (in dollars per share) | $ / shares 14.09
Forfeited, Average Grant Date Fair Value (in dollars per share) | $ / shares $ 16.94