Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Income Taxes (Details Textual)

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Note 12 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 4 Months Ended 5 Months Ended 8 Months Ended 9 Months Ended 24 Months Ended
Dec. 05, 2018
Jul. 31, 2020
Apr. 30, 2020
Jul. 31, 2019
Jul. 31, 2020
Mar. 31, 2020
Jul. 31, 2019
Jul. 31, 2020
Oct. 31, 2017
Oct. 31, 2019
Income Tax Expense (Benefit), Total $ (4,192) $ (462)   $ (1,922)     $ (3,115) $ (3,829)    
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total $ (26,767) 2,519   840     (13,628) (62,562)    
Effective Income Tax Rate Reconciliation, Percent, Total 0.00%                  
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount, Total $ 1,400                  
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount 0           200 300    
Goodwill and Intangible Asset Impairment, Total $ 0 0 $ 57,900 $ 0     0 57,944    
Goodwill and Intangible Asset Impairment, Deductible for Tax Purposes     11,900              
Effective Income Tax Rate Reconciliation, Goodwill and Intangible Impairment Loss, Amount     $ 2,900              
Effective Income Tax Rate Reconciliation, Net Operating Loss Carryforwards, Amount               1,400    
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Settlement Costs, Amount               400    
Deferred Tax Assets, Net, Total   69,300     $ 69,300     69,300   $ 69,000
Unrecognized Tax Benefits, Ending Balance   1,600     1,600     1,600   1,700
Income Taxes Paid, Net, Total             $ 1,860 343 $ 4,300  
Net Estimated Financial Impact of Net Operating Losses Write-up               600    
General and Administrative Expense [Member]                    
Settlement of Tax Refunds from Net Operating Loss Carryforwards               2,000    
Foreign Tax Authority [Member]                    
Deferred Tax Assets, Valuation Allowance, Total   $ 100     100     100   $ 100
Her Majesty's Revenue and Customs (HMRC) [Member]                    
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount         $ 900     $ 900    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent         19.00% 17.00%