Income Taxes - Rate reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Federal statutory tax rate	21.00%	21.00%	21.00%
State taxes, net of federal effects	11.60%	4.40%	3.70%
Rate differential on NOL carryback	125.80%	6.20%
Foreign income tax rate differential	16.10%	(2.30%)	0.40%
Mexican tax assessments	(1059.90%)
Stock based compensation	(16.70%)
Provision to return	39.20%	(2.50%)	0.70%
State rate change	9.20%	(0.10%)	(0.20%)
Valuation allowance	(44.10%)	(2.70%)
Other	(15.50%)	(0.30%)	0.40%
Effective Income Tax Rate, Total	(913.30%)	23.70%	26.00%
Domestic operations income (loss) before taxes	$ (5,000)	$ (18,900)	$ 47,900
Foreign operations income (loss) before taxes	3,800	800	1,600
Unrecognized tax benefits	11,303	72	$ 72
Tax Assessment 2013
Unrecognized tax benefits	$ 11,300	$ 100

Effective Income Tax Rate Reconciliation Income Tax Assessment

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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Amount of unrecognized tax benefits.

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