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Stock-Based Compensation - Summary of Performance and Market Based RSUs (Details) - Performance and Market-based Restricted Stock Units
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Units  
Outstanding at beginning of year - Units | shares 217,229
Granted - Units | shares 126,521
Attained by performance - Units | shares 38,820
Released - Units | shares (111,838)
Forfeited - Units | shares (40,673)
Outstanding at end of year - Units | shares 230,059
Weighted Average Grant Date Fair Value  
Beginning of year - Weighted Average Grant Date Fair Value | $ / shares $ 27.73
Granted - Weighted Average Grant Date Fair Value | $ / shares 28.37
Attained by performance - Weighted Average Grant Date Fair Value | $ / shares 23.84
Vested and released - Weighted Average Grant Date Fair Value | $ / shares 23.74
Forfeited - Weighted Average Grant Date Fair Value | $ / shares 29.34
End of year - Weighted Average Grant Date Fair Value | $ / shares $ 28.94