Equity - Additional Information (Details) - USD ($)	12 Months Ended		29 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Nov. 05, 2019	Aug. 01, 2017
Class Of Stock [Line Items]
Common stock shares authorized amount				$ 200,000,000	$ 200,000,000
Stock repurchased	7,158,804	7,555,601	14,714,405
Stock repurchased, value	$ 94,617,000	$ 105,383,000	$ 200,000,000
Stock repurchased, price per share	$ 13.22	$ 13.95	$ 13.59
New Stock Repurchase Program [Member]
Class Of Stock [Line Items]
Stock repurchased	0