Stock Repurchase Program - Additional Information (Detail) - USD ($)			12 Months Ended
	Sep. 05, 2018	Mar. 20, 2018	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2020
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, total cost			$ 8,300,000	$ 53,300,000
Common Stock [Member]
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, authorized amount to repurchase issued and outstanding common stock	$ 50,000,000.0
Stock repurchase program, expiration date	Sep. 04, 2020	Mar. 19, 2020
Stock repurchase program, number of remaining shares purchased			717,597	3,233,352
Stock repurchase program, total cost			$ 8,300,000
Stock repurchase program, average price per share			$ 11.62
Stock repurchase program, remaining authorized, amount					$ 0
Common Stock [Member] | Maximum [Member]
Equity Class Of Treasury Stock [Line Items]
Stock repurchase program, authorized amount to repurchase issued and outstanding common stock		$ 50,000,000.0