Shareholders' Equity (Details) - USD ($)		3 Months Ended
	Aug. 01, 2018	Jun. 30, 2018	Apr. 26, 2018
Class of Warrant or Right [Line Items]
Stock repurchase program, authorized amount			$ 200,000,000
Shares repurchased during period (in shares)		9,200,000
Shares repurchased, weighted average price per share		$ 10.88
Subsequent Event
Class of Warrant or Right [Line Items]
Common stock, beneficial ownership threshold to be considered an Acquiring Person (as a percent)	5.00%
Common shares purchasable per Right (in shares)	0.1
Shareholder rights accompanying each outstanding share of the company's common stock (in number of Rights)	1
Purchase price (in dollars per share)	$ 45
Purchase price, one-tenth share (in dollars per share)	4.50
Redemption price (in dollars per Right)	$ 0.001
Subsequent Event | Rights
Class of Warrant or Right [Line Items]
Number of rights per outstanding share of common stock (in shares)	1
Period after public announcement that a person has become an acquirer (in days)	10 days
Period after a person announces a tender offer which would make them an acquirer (in days)	10 days