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Income Taxes - Rate reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Oct. 31, 2020
Federal statutory tax rate 21.00% 21.00% 21.00%
State taxes, net of federal effects (1.30%) 11.60% 4.40%
Rate differential on NOL carryback   125.80% 6.20%
Foreign income taxes greater than U.S. 5.20% 16.10% (2.30%)
Uncertain tax positions 5.10% (1059.90%)  
Stock based compensation (6.10%) (16.70%)  
Provision to return (59.90%) 39.20% (2.50%)
State rate change (2.50%) 9.20% (0.10%)
Valuation allowance (24.20%) (44.10%) (2.70%)
Other permanent differences (33.80%)    
Other (0.50%) (15.50%) (0.30%)
Effective Income Tax Rate, Total (97.00%) (913.30%) 23.70%
Domestic operations income (loss) before taxes $ (1,400) $ (5,000) $ (18,900)
Income tax refunds 6,700    
Foreign operations income (loss) before taxes (1,900) 3,800 800
Unrecognized tax benefits 11,131 11,303 $ 72
Tax Assessment 2013      
Unrecognized tax benefits $ 11,100 $ 11,300