Note 16 - Earnings Per Share - Calculation of Basic and Diluted EPS (Details) - USD ($)	1 Months Ended	11 Months Ended		12 Months Ended
	Dec. 05, 2018	Oct. 31, 2019	Oct. 31, 2019	Oct. 31, 2018
Net income (loss)	$ (22,575,000)	$ (9,912,000)	$ (9,912,000)	$ 28,382,000
Less: Undistributed earnings allocated to participating securities				(6,365,000)
Less: Preferred stock - cumulative dividends	(126,000)	(1,623,000)		(1,428,000)
Net income (loss) attributable to common stockholders (numerator for basic earnings per share)	(22,701,000)	(11,535,000)		20,589,000
Add back: Undistributed earnings allocated to participating securities				$ 6,365,000
Less: Undistributed earnings reallocated to participating securities
Numerator for diluted earnings per share		$ (11,535,000)
Weighted average shares - basic (in shares)	7,576,289	41,445,508		7,576,289
Weighted average shares - diluted (in shares)	7,576,289	41,445,508		8,325,890
Basic loss per share (in dollars per share)	$ (3)	$ (0.28)		$ 2.72
Diluted loss per share (in dollars per share)	$ (3)	$ (0.28)		$ 2.47
Less: Preferred stock - cumulative dividends	$ (126,000)	$ (1,623,000)		$ (1,428,000)
Less: Undistributed earnings allocated to preferred shares				(6,365,000)
Net (loss) income available to common shareholders	$ (22,701,000)	$ (11,535,000)		$ 20,589,000
Dilutive effect of stock options (in shares)				749,601
Antidilutive stock options (in shares)	932,746