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Note 15 - Stock-based Compensation (Details Textual) $ / shares in Units, $ in Thousands			1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 06, 2020 shares	Oct. 29, 2020 USD ($) $ / shares shares	Dec. 05, 2018 USD ($)	Oct. 31, 2019 USD ($) $ / shares shares	Oct. 31, 2020 USD ($) $ / shares	Oct. 31, 2019 $ / shares
Equivalent Vested Options Rolled Forward from Predecessor to Successor (in shares) \| shares				2,783,479
Share-based Payment Arrangement, Plan Modification, Incremental Cost \| $		$ 5,900		$ 0
Share-based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)				$ 0.87
Share-based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)				6.09
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance (in dollars per share)				1.33	$ 1.54	$ 1.33
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value \| $					$ 100
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total \| $					15,765
Share-based Payment Arrangement, Exercise of Option, Tax Benefit \| $					0
Share-based Payment Arrangement, Accelerated Cost \| $			$ 600
General and Administrative Expense [Member]
Share-based Payment Arrangement, Expense \| $			$ 100
Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Price Target (in dollars per share)				13		13
Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Price Target (in dollars per share)				16		16
Share-based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Price Target (in dollars per share)				19		$ 19
Time Based Only [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						5 years
The $13 Market/Time- Based [Member] \| Closing Price of $13.00 for 30 Consecutive Days [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage						33.30%
The $16 Market/Time- Based [Member] \| Closing Price of $16.00 for 30 Consecutive Days [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage						33.30%
The $19 Market/Time- Based [Member] \| Closing Price of $19.00 for 30 Consecutive Days [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage						33.30%
The 113 Awards Modified [Member]
Share-based Payment Arrangement, Plan Modification, Number of Grantees Affected		113
Share-based Compensation Arrangement by Share-based Payment Award, Exchange Ratio (in shares) \| shares		2
Share-based Compensation Arrangement by Share-based Payment Award, Exchanged (in shares) \| shares		3,816,450
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued upon Exchange (in shares) \| shares		1,908,165
The 113 Awards Modified [Member] \| Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Price Target (in dollars per share)		$ 6.00
The 113 Awards Modified [Member] \| Share-based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Price Target (in dollars per share)		8.00
The 113 Awards Modified [Member] \| Share-based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Price Target (in dollars per share)		$ 10.00
The 18 Awards Modified [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
Share-based Payment Arrangement, Plan Modification, Number of Grantees Affected		18
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Modified (in shares) \| shares		1,381,426
The 18 Awards Modified [Member] \| Share-based Payment Arrangement, Tranche One [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	46.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Vested (in shares) \| shares	635,455
The 18 Awards Modified [Member] \| Vest Ratably 1/3 Each Year on December 6, 2021, 2022 and 2023 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		15.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Modified (in shares) \| shares		207,215
The 18 Awards Modified [Member] \| Vest Based on Reduced Price Vesting Targets of $6.00 per Share, $8.00 per Share or $10.00 per Share [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		39.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Modified (in shares) \| shares		538,756
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total \| $					1,900
Restricted Stock [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total \| $					13,500
UNITED KINGDOM \| Time Based Only [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total \| $					$ 637
The 2018 Omnibus Incentive Plan [Member] \| UNITED KINGDOM
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance (in dollars per share)				$ 0.01		$ 0.01