Note 12 - Income Taxes  | 
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Jul. 31, 2019  | ||||||||||||||||||||||||||||||||||
| Notes to Financial Statements | ||||||||||||||||||||||||||||||||||
| Income Tax Disclosure [Text Block] | 
 Note  12.  Income TaxesIn    December 2017,  the Tax Cuts and Jobs Act (the “2017  Tax Act”) was enacted. The 2017  Tax Act significantly revised the U.S. corporate income tax regime by, among other things, the following items:
 For the   third  quarter ended  July 31, 2019,  we recorded an income tax benefit of $1.9  million on pretax income of $0.8  million, resulting in an effective tax rate that is not  meaningful. The primary items impacting the change in our effective tax rate from the prior quarter include (1 ) a change in our estimated full year effective tax rate due to a change in our estimated full year income before tax and (2 ) a change in our estimated full year foreign income inclusion. The change in estimated full year effective tax rate resulted in a true-up to income tax expense in the current quarter. For the same Predecessor quarter in the prior year, we recorded income tax expense of $1.7  million on pretax income of $6.5  million, resulting in an effective tax rate of 26.1%. 
For the Successor period from    December 6, 2018  to  July 31, 2019,  the Company recorded an income tax benefit of $3.1  million on a pretax loss of $13.6  million, resulting in an effective tax rate of 22.9%.  The effective tax rate for this period was heavily affected by the income tax expense activity discussed above for the successor quarter ended  July 31, 2019. 
For the Predecessor period from    November 1, 2018  to  December 5, 2018,  the Company recorded an income tax benefit of $4.2  million on a pretax loss of $26.8  million, resulting in an effective tax rate of 15.7%.  For the Predecessor period for the nine  months ended  July 31, 2018,  the Company recorded an income tax benefit of $10.6  million on pretax income of $16.4  million, resulting in an effective tax rate that was not  meaningful.The factors impacting comparability between our effective tax rates for the periods discussed above are as follows:  
 At    July 31, 2019  and  October 31, 2018,  we had deferred tax liabilities, net of deferred tax assets, of $71.2 $39.0  million, respectively. The increase in our net deferred tax liability is primarily due to deferred tax liabilities recorded in purchase accounting related to the fair value adjustments to fixed assets and other identifiable intangible assets.  The Company has a valuation allowance of $0.1  million as of both  July 31, 2019  and  October 31, 2018  related to foreign tax credit carryforwards where realization is more uncertain at this time due to the limited carryforward periods that exist.The Company had  
no  liability for uncertain tax positions at  July 31, 2019  and  October 31, 2018. 
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