Equity - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Nov. 05, 2019
Class Of Stock [Line Items]
Common stock shares authorized amount				$ 200,000,000
Stock repurchased, value	$ 120,000,000	$ 94,617,000	$ 105,383,000
Stock repurchased, price per share	$ 8.69
Stock repurchase amount available for future repurchase	$ 80,000,000
Common Stock [Member]
Class Of Stock [Line Items]
Stock repurchased	13,813,158	7,159,000	7,555,000
Stock repurchased, value	$ 138,000	$ 72,000	$ 76,000