Basis of Presentation Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2017	Jul. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales	$ 227,992	$ 224,922	$ 691,945	$ 718,071
Gross profit	28,855	23,910	85,871	66,080
Selling, general and administrative expenses	21,251	17,546	63,134	51,882
Asset impairment, net	0	0	41	273
Operating income	7,039	5,798	21,002	12,230
Other expense	(798)	(487)	(1,293)	(518)
Income before income taxes	2,457	666	6,915	(1,799)
Provision for income taxes	(4,439)	(1,344)	(6,686)	203
Net loss	$ (1,982)	$ (678)	$ 229	$ (1,596)
Basic loss per share	$ (0.11)	$ (0.04)	$ 0.01	$ (0.09)
Diluted loss per share	$ (0.11)	$ (0.04)	$ 0.01	$ (0.09)
Timing And Recognition Of Certain Transactions [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 224,922
Gross profit		23,910
Operating income		5,798
Other expense		487
Income before income taxes		666
Provision for income taxes		(1,344)
Net loss		$ (678)		$ (1,596)
Basic loss per share		$ (0.04)
Diluted loss per share		$ (0.04)
Timing And Recognition Of Certain Transactions [Member] | Scenario, Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 224,575		719,135
Gross profit		24,257		65,016
Selling, general and administrative expenses				52,122
Asset impairment, net				0
Operating income		6,145		11,199
Other expense		486
Income before income taxes		1,014		(2,830)
Provision for income taxes		(1,363)		479
Net loss		$ (349)		$ (2,351)
Basic loss per share		$ (0.02)		$ (0.13)
Diluted loss per share		$ (0.02)		$ (0.13)
Timing And Recognition Of Certain Transactions [Member] | Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of sales		$ 347		$ (1,064)
Gross profit		(347)		1,064
Selling, general and administrative expenses				(240)
Asset impairment, net				273
Operating income		(347)		1,031
Other expense		1
Income before income taxes		(348)		1,031
Provision for income taxes		19		(276)
Net loss		$ (329)		$ 755
Basic loss per share		$ (0.02)		$ 0.04
Diluted loss per share		$ (0.02)		$ 0.04