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 5 Months Ended 6 Months Ended
Apr. 30, 2020
Dec. 05, 2018
Apr. 30, 2020
Apr. 30, 2019
Mar. 31, 2020
Apr. 30, 2019
Apr. 30, 2020
Oct. 31, 2019
Income Tax Expense (Benefit), Total   $ (4,192) $ (2,221) $ 1,572   $ (1,193) $ (3,368)  
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total   $ (26,767) $ (61,189) (8,073)   $ (14,468) $ (65,082)  
Effective Income Tax Rate Reconciliation, Percent, Total   15.70% 3.60%     8.30% 5.20%  
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount, Total   $ 1,400            
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount   0       $ 800 $ 100  
Goodwill and Intangible Asset Impairment, Total   $ 57,944   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  
Deferred Tax Assets, Net, Total $ 65,300   65,300       65,300 $ 69,000
Unrecognized Tax Benefits, Ending Balance 1,700   1,700       1,700 1,700
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%