Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Deferred Compensation [Member]
Balance at at Oct. 31, 2019	$ 75,737	$ 19	$ 1,151,454	$ (1,075,089)	$ (647)	$ (466)	$ 466
Balance at (in shares) at Oct. 31, 2019		193,608,684
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Sale of common stock, net of fees	3,502	$ 1	3,501
Sale of common stock, net of fees (in shares)		7,938,228
Orion warrant exercises	25,994	$ 1	25,993
Orion warrant exercises (in shares)		9,396,320
Taxes paid upon vesting of restricted stock awards, net of stock issued under benefit plans	(6)		(6)
Taxes paid upon vesting of restricted stock awards, net of stock issued under benefit plans, (in shares)		2,585
Share based compensation	488		488
Preferred dividends — Series B	(931)		(931)
Effect of foreign currency translation	(49)				(49)
Adjustment for deferred compensation						29
Adjustment for deferred compensation (in shares)		20,012
Adjustment for deferred compensation							(29)
Net loss	(40,151)			(40,151)
Balance at at Jan. 31, 2020	64,584	$ 21	1,180,499	(1,115,240)	(696)	(437)	437
Balance at (in shares) at Jan. 31, 2020		210,965,829
Balance at at Oct. 31, 2020	$ 194,548	$ 29	1,359,454	(1,164,196)	(739)	(432)	432
Balance at (in shares) at Oct. 31, 2020	294,706,758	294,706,758
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Sale of common stock, net of fees	$ 156,366	$ 3	156,363
Sale of common stock, net of fees (in shares)		25,000,000
Orion warrant exercises	21,824		21,824
Orion warrant exercises (in shares)		2,700,000
Common stock issued, non-employee compensation	45		45
Common stock issued, non-employee compensation, (in shares)		2,734
Taxes paid upon vesting of restricted stock awards, net of stock issued under benefit plans	8		8
Taxes paid upon vesting of restricted stock awards, net of stock issued under benefit plans, (in shares)		4,521
Share based compensation	1,417		1,417
Preferred dividends — Series B	(800)		(800)
Effect of foreign currency translation	58				58
Adjustment for deferred compensation						(30)
Adjustment for deferred compensation (in shares)		(1,669)
Adjustment for deferred compensation							30
Release of a share reserve		(48)
Net loss	(45,960)			(45,960)
Balance at at Jan. 31, 2021	$ 327,506	$ 32	$ 1,538,311	$ (1,210,156)	$ (681)	$ (462)	$ 462
Balance at (in shares) at Jan. 31, 2021	322,412,296	322,412,296