Subsequent Events (Details) - USD ($)				2 Months Ended	12 Months Ended
	Feb. 28, 2020	Feb. 21, 2020	Feb. 20, 2020	Feb. 28, 2020	Dec. 31, 2019	Feb. 11, 2020	Jul. 29, 2019
Subsequent Event [Line Items]
Stock repurchase program, authorized amount							$ 50,000,000
Repurchases of common stock (in shares)					10,694,556
Repurchases of common stock					$ 43,985,000
Subsequent Event
Subsequent Event [Line Items]
Stock repurchase program, authorized amount						$ 50,000,000
Repurchases of common stock (in shares)				8,100,000
Repurchases of common stock				$ 32,900,000
Repurchase of stock (in shares)		7,062,396
Repurchase of stock, value		$ 28,600,000
Ownership percentage of outstanding common stock			5.00%
Sublease income	$ 11,000,000