Equity - Additional Information (Details) - USD ($)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Nov. 05, 2019
Class Of Stock [Line Items]
Common stock shares authorized amount					$ 200,000,000
Stock repurchased, price per share			$ 8.98	$ 8.69
Stock repurchased, value	$ 8,520,000		$ 108,520,000	$ 120,000,000
Stock repurchase amount available for future repurchase		$ 80,000,000
Common Stock [Member]
Class Of Stock [Line Items]
Stock repurchased	1,233,000	0	12,090,055	13,813,158
Stock repurchased, value	$ 12,000		$ 121,000