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Share-based compensation (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Summary of activity of restricted share units
The following table summarizes the activity of restricted share units during fiscal years 2022, 2021 and 2020: 
 UnitsWeighted-average grant-date fair value
Outstanding at December 31, 2019937,839 7.50 
Partial vesting of 2015 grant(101,928)6.33 
Partial vesting of 2016 grant(114,045)4.70 
Partial vesting of 2017 grant(67,606)9.20 
Partial vesting of 2018 grant(163,695)8.50 
Vesting of 2019 grant(35,000)8.00 
Forfeitures(4,367)7.75 
Outstanding at December 31, 2020451,198 7.80 
Partial vesting of 2016 grants(110,213)4.70 
Partial vesting of 2017 grants(62,742)9.20 
Partial vesting of 2018 grants(79,673)8.50 
Forfeitures(11,774)8.69 
Outstanding at December 31, 2021186,796 8.70 
Partial vesting of 2017 grants (51,613)9.20 
Partial vesting of 2018 grants (64,895)8.50 
Forfeitures(8,522)8.62 
Outstanding at December 31, 202261,766 8.50 
Exercisable at December 31, 2022— — 
The following table provides a summary of outstanding restricted share units at December 31, 2022: 

Number of units outstanding (i) 61,766 
Weighted-average grant-date fair market value per unit8.50 
Total grant-date fair value 525 
Weighted-average accumulated percentage of service92.90 %
Stock-based compensation recognized in Additional paid-in capital488 
Compensation expense not yet recognized (ii)37 

(i)Related to awards that will vest in 2023.
(ii)Expected to be recognized in a weighted-average period of 0.1 years.
Summary of phantom RSU award activity
The following table summarizes the activity under the plan as of December 31, 2022:
UnitsSettlement
Outstanding at December 31, 20191,661,820 $— 
Grant 202065,440 — 
Partial vesting of 2019 grant (i)(5,162)18 
Forfeited(31,614)— 
Outstanding at December 31, 20201,690,484 — 
Grant 2021918,387 — 
Partial vesting of 2019 Grant (ii)(173,916)1,104 
Vesting of 2020 grant (iii)(65,440)416 
Forfeitures(329,027)— 
Outstanding at December 31, 20212,040,488 — 
Grant 2022907,536 — 
Partial vesting of 2019 grant (iv)(63,257)431 
Vesting of 2021 grant (v)(44,093)320 
Forfeitures(128,919)— 
Outstanding at December 31, 20222,711,755 — 

The following table provides a summary of the plan at December 31, 2022:
Total Non-vested (i)
Number of units outstanding (i)2,711,755 
Current share price8.36 
Total fair value of the plan22,670 
Weighted-average accumulated percentage of service52.69 %
Accrued liability (ii)11,945 
Compensation expense not yet recognized (iii)10,725 

(i)Related to awards that will vest between April 2023 and May 2025.
(ii)Presented within “Accrued payroll and other liabilities” in the Company’s current and non-current liabilities balance sheet.
(iii)Expected to be recognized in a weighted-average period of 1.88 years.