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Share-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Share-based Awards Activity
A summary of the status of our share-based compensation awards as of June 30, 2021 and changes during the six months ended June 30, 2021, are presented below: 
 2021
 Shares
(in thousands)		Weighted-
Average
Grant-Date
Fair Value
Nonvested - December 31, 20201,263 $3.48 
Granted408 9.89 
Vested(327)5.50 
Forfeited(22)7.20 
Nonvested - June 30, 20211,322 $4.89