Employee Benefit Plans - Changes in non-vested restricted shares (Details) - Restricted Shares - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Shares
Non-vested shares at Beginning	2,619,691	2,235,179
Granted	1,254,276	1,010,700
Vested	(510,084)	(434,208)
Forfeited	(115,155)	(191,980)
Non-vested shares at Ending	3,248,728	2,619,691	2,235,179
Weighted Average Grant-Date Fair Value
Non-vested shares at Beginning	$ 7.89	$ 6.81
Granted	6.72	3.87	$ 4.59
Vested	11.86	14.96
Forfeited	6.29	7.71
Non-vested shares at Ending	$ 6.87	$ 7.89	$ 6.81