Share Capital - Non-vested Restricted Stock Shares Activity (Detail) - $ / shares |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Number of Shares, Balance | 689,340 | ||
Number of Shares, Granted | 184,134 | ||
Number of Shares, Forfeited | (107,817) | ||
Number of Shares, Vested | (389,530) | ||
Number of Shares, Balance | 376,127 | 689,340 | |
Weighted Average Grant Date Fair Value, Balance | $ 16.77 | ||
Weighted Average Grant Date Fair Value, Granted | 34.76 | $ 13.90 | $ 11.70 |
Weighted Average Grant Date Fair Value, Forfeited | 16.73 | ||
Weighted Average Grant Date Fair Value, Vested | 21.83 | ||
Weighted Average Grant Date Fair Value, Balance | $ 20.39 | $ 16.77 | |
Restricted Stock Units (RSUs) [Member] | |||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
Number of Shares, Balance | 689,340 | 1,399,762 | |
Number of Shares, Balance | 376,127 | 689,340 | 1,399,762 |