Stockholders' Equity - Summary of Stock Repurchase Program (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2018 USD ($) $ / shares shares
Shares Repurchased
Beginning balance (in shares) | shares	0
Repurchase of common stock under the stock repurchase program (in shares) | shares	4,290,801
Ending balance (in shares) | shares	4,290,801
Weighted-Average Price per Share
Beginning balance (in USD per share) | $ / shares	$ 0.00
Repurchase of common stock under the stock repurchase program (in USD per share) | $ / shares	25.86
Ending balance (in USD per share) | $ / shares	$ 25.86
Amount Repurchased (in thousands)
Beginning balance | $	$ 0
Repurchase of common stock under the stock repurchase program | $	110,981
Ending balance | $	$ 110,981