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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]    
Outstanding at beginning of period (in shares) 1,085,023 963,832
Granted (in shares) 273,845 437,054
Converted (in shares) (120,830) (200,563)
Expired (in shares) (1,200) (34,100)
Forfeited (in shares) (5,600) (1,000)
Outstanding at end of period (in shares) 1,231,238 1,165,223
Vested (in shares) 357,499 353,023
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]    
Outstanding at beginning of period, Weighted average grant-date fair value (in dollars per share) $ 17.14 $ 17.67
Granted, Weighted average grant-date fair value (in dollars per share) 26.65 18.85
Converted, Weighted average grant-date fair value (in dollars per share) 25.40 19.87
Expired, Weighted average grant-date fair value (in dollars per share) 26.60 19.40
Forfeited, Weighted average grant-date fair value (in dollars per share) 23.31 18.90
Outstanding at end of period, Weighted average grant-date fair value (in dollars per share) 18.41 17.69
Vested (in dollars per share) $ 9.26 $ 8.25
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]    
Share-based compensation expense $ 5.5 $ 5.8
Unrecognized share-based compensation expense $ 8.6  
Unrecognized share-based compensation, weighted average recognition period 1 year 3 months 18 days  
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Requisite service period 3 years  
Stock Units [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Requisite service period 3 years  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]    
Historical volatility period 3 years  
Risk-free interest rate 0.30%  
Expected volatility rate 39.70%  
Market Condition Award [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]    
Granted, Weighted average grant-date fair value (in dollars per share) $ 26.50  
Performance Condition Award [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]    
Granted, Weighted average grant-date fair value (in dollars per share) $ 26.69  
Time-Based Awards [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]    
Number of additional outstanding shares issued (in shares) 1,527,488  
Director [Member] | Time-Based Awards [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]    
Vested (in shares) 357,499  
Director [Member] | Time-Based Awards [Member] | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Requisite service period 12 months