Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	6 Months Ended
	Jun. 04, 2018	Apr. 30, 2018
Subsequent Event [Line Items]
Stock repurchases (in shares)		1,627,233
Stock repurchases		$ 39,147
Average price of shares repurchased (in dollars per share)		$ 24.06
Subsequent event
Subsequent Event [Line Items]
Stock repurchases (in shares)	611,942
Stock repurchases	$ 15,400
Average price of shares repurchased (in dollars per share)	$ 25.15
Authorized funds remaining under stock repurchase program	$ 245,500