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Stockholders' Equity - Summary of Status of Outstanding Performance Share Awards (Details)
12 Months Ended
Dec. 31, 2020
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]  
Beginning Balance 656,374
Forfeited (23,164)
Ending Balance 353,446
Performance shares  
Number of share  
Beginning Balance 177,032
Granted 120,382
Settled 0
Forfeited (103,069)
Ending Balance 194,345
Weighted Average Grant Date Fair Value  
Beginning Balance | $ / shares $ 29.09
Granted | $ / shares 27.67
Settled | $ / shares 0
Forfeited | $ / shares 29.92
Ending Balance | $ / shares $ 27.76
Maximum | Performance shares  
Number of share  
Ending Balance 2
Minimum [Member] | Performance shares  
Number of share  
Ending Balance 0