Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Income Taxes [Line Items]
Deferred tax assets, job tax credit	$ 14,050	$ 15,229
Recorded valuation allowance	13,423	14,529
Release from valuation allowance	$ 627	$ 700	$ 350
Federal statutory rate	35.00%
North Carolina
Income Taxes [Line Items]
Deferred tax assets, job tax credit	$ 11,700
Investment tax credit provided by Investing in Business Property Credit	7.00%
Georgia
Income Taxes [Line Items]
Deferred tax assets, job tax credit	$ 2,300