Share-based compensation and employee benefit plans - Restricted share award and RSU activity (Details)	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Restricted share awards
Number of non- vested PSUs
Beginning of period (in shares) | shares	1,171,058
Granted (in shares) | shares	2,123,811
Forfeited (in shares) | shares	(88,553)
Vested (in shares) | shares	(616,122)
End of period (in shares) | shares	2,590,194
Weighted average grant date fair value
Beginning of period (in dollars per share) | $ / shares	$ 8.80
Granted (in dollars per share) | $ / shares	10.32
Forfeited (in dollars per share) | $ / shares	10.31
Vested (in dollars per share) | $ / shares	9.84
End of period (in dollars per share) | $ / shares	$ 10.13
RSUs
Number of non- vested PSUs
Beginning of period (in shares) | shares	0
Granted (in shares) | shares	6,246,111
Forfeited (in shares) | shares	(458,841)
Vested (in shares) | shares	(2,358,382)
End of period (in shares) | shares	3,428,888
Weighted average grant date fair value
Beginning of period (in dollars per share) | $ / shares	$ 0
Granted (in dollars per share) | $ / shares	10.18
Forfeited (in dollars per share) | $ / shares	10.24
Vested (in dollars per share) | $ / shares	10.21
End of period (in dollars per share) | $ / shares	$ 10.14