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Stock-Based Compensation (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 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) 274,606 435,254
Converted (in shares) (115,930) (128,463)
Expired (in shares) 0 (1,000)
Forfeited (in shares) 0 0
Outstanding at end of period (in shares) 1,243,699 1,269,623
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 18.86
Converted, Weighted average grant-date fair value (in dollars per share) 25.55 19.06
Expired, Weighted average grant-date fair value (in dollars per share) 0 19.40
Forfeited, Weighted average grant-date fair value (in dollars per share) 0 0
Outstanding at end of period, Weighted average grant-date fair value (in dollars per share) 18.46 17.94
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 $ 1.8 $ 1.8
Unrecognized share-based compensation expense $ 13.1  
Unrecognized share-based compensation, weighted average recognition period 1 year 9 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) 1,542,949  
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