Deferred Tax Assets and Liabilities (Detail) (USD $)	Oct. 31, 2013	Oct. 31, 2012
Deferred tax liabilities:
Property, plant and equipment	$ 69,942,000	$ 66,957,000
Prepaid and other assets	1,765,000	1,374,000
Total deferred tax liabilities	71,707,000	68,331,000
Deferred tax assets:
Accrued expenses and accounts receivable	9,187,000	7,742,000
Inventory	85,000	670,000
Compensation on restricted stock	7,514,000	6,523,000
State income tax credits	18,098,000	11,275,000
Other	2,310,000	769,000
Valuation allowance	(18,098,000)	(11,275,000)
Total deferred tax assets	19,096,000	15,704,000
Net deferred tax liabilities	52,611,000	52,627,000
Current deferred tax assets	(478,000)	(3,945,000)
Long-term deferred tax liabilities	53,089,000	56,572,000
Net deferred tax liabilities	$ 52,611,000	$ 52,627,000