Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Deferred Compensation [Member]	Total
Balance at at Oct. 31, 2019	$ 19	$ 1,151,454	$ (1,075,089)	$ (647)	$ (466)	$ 466	$ 75,737
Balance at (in shares) at Oct. 31, 2019	193,608,684
Sale of common stock, net of fees	$ 1	3,501					3,502
Sale of common stock, net of fees (in shares)	7,938,228
Orion warrant exercises	$ 1	25,993					25,994
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	$ 21	1,180,499	(1,115,240)	(696)	(437)	437	64,584
Balance at (in shares) at Jan. 31, 2020	210,965,829
Balance at at Oct. 31, 2019	$ 19	1,151,454	(1,075,089)	(647)	(466)	466	75,737
Balance at (in shares) at Oct. 31, 2019	193,608,684
Effect of foreign currency translation							(91)
Net loss							(54,920)
Balance at at Apr. 30, 2020	$ 21	1,180,042	(1,130,009)	(738)	(437)	437	49,316
Balance at (in shares) at Apr. 30, 2020	211,052,401
Balance at at Jan. 31, 2020	$ 21	1,180,499	(1,115,240)	(696)	(437)	437	64,584
Balance at (in shares) at Jan. 31, 2020	210,965,829
Taxes paid upon vesting of restricted stock awards, net of stock issued under benefit plans		(32)					(32)
Taxes paid upon vesting of restricted stock awards, net of stock issued under benefit plans, (in shares)	86,572
Share based compensation		375					375
Preferred dividends - Series B		(800)					(800)
Effect of foreign currency translation				(42)			(42)
Net loss			(14,769)				(14,769)
Balance at at Apr. 30, 2020	$ 21	1,180,042	(1,130,009)	(738)	(437)	437	49,316
Balance at (in shares) at Apr. 30, 2020	211,052,401
Balance at at Oct. 31, 2020	$ 29	1,359,454	(1,164,196)	(739)	(432)	432	$ 194,548
Balance at (in shares) at Oct. 31, 2020	294,706,758						294,706,758
Sale of common stock, net of fees	$ 3	156,363					$ 156,366
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	$ 32	1,538,311	(1,210,156)	(681)	(462)	462	327,506
Balance at (in shares) at Jan. 31, 2021	322,412,296
Balance at at Oct. 31, 2020	$ 29	1,359,454	(1,164,196)	(739)	(432)	432	$ 194,548
Balance at (in shares) at Oct. 31, 2020	294,706,758						294,706,758
Effect of foreign currency translation							$ (2)
Net loss							(64,877)
Balance at at Apr. 30, 2021	$ 32	1,538,831	(1,229,073)	(741)	(503)	503	$ 309,049
Balance at (in shares) at Apr. 30, 2021	322,492,804						322,492,804
Balance at at Jan. 31, 2021	$ 32	1,538,311	(1,210,156)	(681)	(462)	462	$ 327,506
Balance at (in shares) at Jan. 31, 2021	322,412,296
Sale of common stock, net of fees		5					5
Orion warrant exercises		269					269
Orion warrant exercises (in shares)	14,026
Common stock issued, non-employee compensation		55					55
Common stock issued, non-employee compensation, (in shares)	5,456
Taxes paid upon vesting of restricted stock awards, net of stock issued under benefit plans		(262)					(262)
Taxes paid upon vesting of restricted stock awards, net of stock issued under benefit plans, (in shares)	64,782
Share based compensation		1,253					1,253
Preferred dividends - Series B		(800)					(800)
Effect of foreign currency translation				(60)			(60)
Adjustment for deferred compensation					(41)
Adjustment for deferred compensation (in shares)	(3,756)
Adjustment for deferred compensation						41
Net loss			(18,917)				(18,917)
Balance at at Apr. 30, 2021	$ 32	$ 1,538,831	$ (1,229,073)	$ (741)	$ (503)	$ 503	$ 309,049
Balance at (in shares) at Apr. 30, 2021	322,492,804						322,492,804