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Shareholders' Equity - Reconciliation of Unvested Balance of Performance Restricted Stock Unit (Detail) - Performance Restricted Stock Units [Member] - $ / shares
shares in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Number of Shares    
Unvested, beginning balance 124 0
Granted 0 124
Vested (82) [1] 0
Forfeited (42) 0
Unvested, ending balance 0 124
Granted 0 124
Vested (82) [1] 0
Forfeited (42) 0
Unvested, ending balance 0 124
Weighted Average Grant Date Fair Value    
Unvested, beginning balance $ 11.08 $ 0
Granted 0 11.08
Vested 15.54 [1] 0
Forfeited 11.08 0
Unvested, ending balance 0 11.08
Granted 0 11.08
Vested 15.54 [1] 0
Forfeited 11.08 0
Unvested, ending balance $ 0 $ 11.08
[1] Includes the impact of the modification of 21 PRSUs which were cancelled and reissued at a grant date fair value of $28.93