Correction of Immaterial Errors Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income	$ 5,265	$ (678)	$ 4,209	$ (5,127)	$ (4,917)	$ 1,862	$ 6,037	$ 2,923	$ 3,669	$ 5,905	$ 19,915
Depreciation and amortization									37,645	34,267	27,839
Deferred income taxes									(2,704)	4,263	837
Accounts receivable									10,975	(27,607)	(10,273)
Inventories									(2,408)	358	4,734
Prepaids and other assets									14,476	(8,665)	(8,270)
Payables and other									(1,843)	(5,923)	3,573
Accrued income taxes									3,998	(1,516)	(5,526)
Net cash provided by operating activities									69,361	3,373	29,018
Capital expenditures									(28,324)	(39,376)	(39,593)
Net cash used in investing activities									$ (28,316)	(27,701)	(159,408)
Timing and Recognition of Certain Transactions [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income										5,905
As Previously Reported [Member] | Timing and Recognition of Certain Transactions [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income										8,264	22,444
Depreciation and amortization										34,213	27,893
Deferred income taxes										2,997	843
Accounts receivable										27,595	(10,444)
Inventories										(989)	3,795
Prepaids and other assets										9,553	(9,542)
Payables and other										(6,394)	3,327
Accrued income taxes										(1,711)	(4,922)
Net cash provided by operating activities										3,501	29,583
Capital expenditures										(39,504)	(40,158)
Net cash used in investing activities										(27,829)	(159,973)
Revision Adjustment [Member] | Timing and Recognition of Certain Transactions [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income										(2,359)	(2,529)
Depreciation and amortization										54	(54)
Deferred income taxes										1,266	(6)
Accounts receivable										12	171
Inventories										631	939
Prepaids and other assets										(888)	1,272
Payables and other										471	246
Accrued income taxes										195	(604)
Net cash provided by operating activities										(128)	(565)
Capital expenditures										(128)	565
Net cash used in investing activities										$ 128	$ 565