Equity - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Class Of Stock [Line Items]
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Par value of common stock (in dollars per share)	$ 0.01
Preferred stock, shares authorized (in shares)	3,500,000	3,500,000
Par value of preferred stock per share (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares issued (in shares)	0
Cash dividends declared or paid	$ 0	$ 0	$ 0
Common Stock
Class Of Stock [Line Items]
Common stock repurchased	7,400,000
Maximum | Common Stock
Class Of Stock [Line Items]
Stock repurchase program, authorized amount	$ 30,000,000.0