Stockholders' Equity - Summary of the Stock Repurchase Program (Details) $ / shares in Units, $ in Thousands	6 Months Ended
	Apr. 30, 2019 USD ($) $ / shares shares
Shares Repurchased
Cumulative beginning balance (in shares) | shares	0
Repurchase of common stock under the stock repurchase program (in shares) | shares	1,752,525
Cumulative ending balance (in shares) | shares	1,752,525
Weighted-Average Price per Share
Cumulative beginning balance (in dollars per share) | $ / shares	$ 0
Repurchase of common stock under the stock repurchase program (in dollars per share) | $ / shares	37.97
Cumulative ending balance (in dollars per share) | $ / shares	$ 37.97
Amount Repurchased (in thousands)
Cumulative beginning balance | $	$ 0
Repurchase of common stock under the stock repurchase program | $	66,544
Cumulative ending balance | $	$ 66,544