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Share-Based Compensation - Summarized Information About Stock Awards (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
$ / shares
shares
Outstanding:  
Aggregate intrinsic value $ 2,720
Weighted average remaining contractual life 5 years 3 months 18 days
Exercisable:  
Number of options (in shares) | shares 1,375
Weighted average exercise price (in dollars per share) | $ / shares $ 31.78
Aggregate intrinsic value $ 1,944
Weighted average remaining contractual life 4 years 2 months 12 days