Shareholders' equity (Tables)

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Schedule of common shares issued and outstanding

The following table presents a summary of the common shares issued and outstanding as of and for the years ended December 31, 2021, 2020 and 2019:

	2021	2020	2019
Common shares issued and outstanding, beginning of year	95,582,733	94,225,498	93,639,610
Options exercised	220,000	—	187,678
Issuance of common shares, net of forfeitures and shares withheld	3,133,969	1,012,939	366,453
Performance restricted shares granted, net of forfeitures and shares withheld	(1,431,963)	344,296	31,757
Issuance of common shares for Sirius Group acquisition	58,331,196	—	—
Issuance of common shares to related party	6,093,842	—	—
Common shares issued and outstanding, end of year	161,929,777	95,582,733	94,225,498