Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Total Stockholder's Equity	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Treasury Stock	Deferred Compensation	Noncontrolling Interests	Total
Beginning Balance at Oct. 31, 2023	$ 682,493	$ 2	$ 2,199,704	$ (1,515,541)	$ (1,672)	$ (1,078)	$ 1,078	$ 17,955	$ 700,448
Beginning Balance at (in shares) at Oct. 31, 2023		15,020,872
Common stock issued, non-employee compensation	51		51						51
Common stock issued, non-employee compensation (in shares)		1,480
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards	(926)		(926)						(926)
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards (in shares)		41,173
Share based compensation	2,876		2,876						2,876
Preferred dividends - Series B	(800)		(800)						(800)
Effect of foreign currency translation	33				33				33
Adjustment for deferred compensation						(51)	51
Adjustment for deferred compensation (in shares)		(1,480)
Contributions received for sale of noncontrolling interest								25,122	25,122
Distribution to non-controlling interest								(236)	(236)
Net Loss	(19,793)			(19,793)				(24,606)	(44,399)
Ending Balance at Jan. 31, 2024	663,934	$ 2	2,200,905	(1,535,334)	(1,639)	(1,129)	1,129	18,235	682,169
Ending Balance at (in shares) at Jan. 31, 2024		15,062,045
Beginning Balance at Oct. 31, 2023	682,493	$ 2	2,199,704	(1,515,541)	(1,672)	(1,078)	1,078	17,955	700,448
Beginning Balance at (in shares) at Oct. 31, 2023		15,020,872
Effect of foreign currency translation									96
Net Loss									(117,178)
Ending Balance at Jul. 31, 2024	675,762	$ 2	2,277,470	(1,600,134)	(1,576)	(1,198)	1,198	9,345	685,107
Ending Balance at (in shares) at Jul. 31, 2024		18,461,340
Beginning Balance at Jan. 31, 2024	663,934	$ 2	2,200,905	(1,535,334)	(1,639)	(1,129)	1,129	18,235	682,169
Beginning Balance at (in shares) at Jan. 31, 2024		15,062,045
Sale of common stock, net of fees	5,893		5,893						5,893
Sale of common stock, net of fees (in shares)		215,457
Common stock issued, non-employee compensation	47		47						47
Common stock issued, non-employee compensation (in shares)		1,545
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards	(52)		(52)						(52)
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards (in shares)		2,287
Share based compensation	3,002		3,002						3,002
Preferred dividends - Series B	(800)		(800)						(800)
Effect of foreign currency translation	(78)				(78)				(78)
Adjustment for deferred compensation						(35)	35
Adjustment for deferred compensation (in shares)		(1,132)
Distribution to non-controlling interest								(425)	(425)
Net Loss	(32,140)			(32,140)				(5,516)	(37,656)
Ending Balance at Apr. 30, 2024	639,806	$ 2	2,208,995	(1,567,474)	(1,717)	(1,164)	1,164	12,294	652,100
Ending Balance at (in shares) at Apr. 30, 2024		15,280,202
Sale of common stock, net of fees	65,848		65,848						65,848
Sale of common stock, net of fees (in shares)		3,174,005
Common stock issued, non-employee compensation	47		47						47
Common stock issued, non-employee compensation (in shares)		2,345
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards	30		30						30
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards (in shares)		6,506
Share based compensation	3,350		3,350						3,350
Preferred dividends - Series B	(800)		(800)						(800)
Effect of foreign currency translation	141				141				141
Adjustment for deferred compensation						(34)	34
Adjustment for deferred compensation (in shares)		(1,718)
Distribution to non-controlling interest								(485)	(485)
Net Loss	(32,660)			(32,660)				(2,464)	(35,123)
Ending Balance at Jul. 31, 2024	675,762	$ 2	2,277,470	(1,600,134)	(1,576)	(1,198)	1,198	9,345	685,107
Ending Balance at (in shares) at Jul. 31, 2024		18,461,340
Beginning Balance at Oct. 31, 2024	656,922	$ 2	2,300,031	(1,641,550)	(1,561)	(1,198)	1,198	10,687	$ 667,609
Beginning Balance at (in shares) at Oct. 31, 2024		20,375,932							20,375,932
Sale of common stock, net of fees	5,892		5,892						$ 5,892
Sale of common stock, net of fees (in shares)		690,711
Common stock issued, non-employee compensation	82		82						82
Common stock issued, non-employee compensation (in shares)		8,335
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards	(468)		(468)						(468)
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards (in shares)		75,834
Share based compensation	2,142		2,142						2,142
Preferred dividends - Series B	(800)		(800)						(800)
Effect of foreign currency translation	(232)				(232)				(232)
Adjustment for deferred compensation						(70)	70
Adjustment for deferred compensation (in shares)		(7,040)
Contributions received for sale of noncontrolling interest								4,000	4,000
Distribution to non-controlling interest								(600)	(600)
Net Loss	(28,326)			(28,326)				(4,060)	(32,386)
Ending Balance at Jan. 31, 2025	635,212	$ 2	2,306,879	(1,669,876)	(1,793)	(1,268)	1,268	10,027	645,239
Ending Balance at (in shares) at Jan. 31, 2025		21,143,772
Beginning Balance at Oct. 31, 2024	656,922	$ 2	2,300,031	(1,641,550)	(1,561)	(1,198)	1,198	10,687	$ 667,609
Beginning Balance at (in shares) at Oct. 31, 2024		20,375,932							20,375,932
Effect of foreign currency translation									$ (320)
Net Loss									(162,031)
Ending Balance at Jul. 31, 2025	556,171	$ 3	2,357,630	(1,799,581)	(1,881)	(1,360)	1,360	9,049	$ 565,220
Ending Balance at (in shares) at Jul. 31, 2025		29,645,294							29,645,294
Beginning Balance at Jan. 31, 2025	635,212	$ 2	2,306,879	(1,669,876)	(1,793)	(1,268)	1,268	10,027	$ 645,239
Beginning Balance at (in shares) at Jan. 31, 2025		21,143,772
Sale of common stock, net of fees	7,665		7,665						7,665
Sale of common stock, net of fees (in shares)		1,626,319
Common stock issued, non-employee compensation	46		46						46
Common stock issued, non-employee compensation (in shares)		12,013
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards	(7)		(7)						(7)
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards (in shares)		6,102
Share based compensation	4,824		4,824						4,824
Preferred dividends - Series B	(800)		(800)						(800)
Effect of foreign currency translation	286				286				286
Adjustment for deferred compensation						(46)	46
Adjustment for deferred compensation (in shares)		(12,013)
Distribution to non-controlling interest								(565)	(565)
Net Loss	(38,049)			(38,049)				300	(37,749)
Ending Balance at Apr. 30, 2025	609,177	$ 2	2,318,607	(1,707,925)	(1,507)	(1,314)	1,314	9,762	618,939
Ending Balance at (in shares) at Apr. 30, 2025		22,776,193
Sale of common stock, net of fees	38,069	$ 1	38,068						38,069
Sale of common stock, net of fees (in shares)		6,846,992
Common stock issued, non-employee compensation	46		46						46
Common stock issued, non-employee compensation (in shares)		8,999
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards	18		18						18
Stock issued under benefit plans, net of taxes paid upon vesting of restricted stock awards (in shares)		22,109
Share based compensation	1,691		1,691						1,691
Preferred dividends - Series B	(800)		(800)						(800)
Effect of foreign currency translation	(374)				(374)				(374)
Adjustment for deferred compensation						(46)	46
Adjustment for deferred compensation (in shares)		(8,999)
Distribution to non-controlling interest								(473)	(473)
Net Loss	(91,656)			(91,656)				(240)	(91,896)
Ending Balance at Jul. 31, 2025	$ 556,171	$ 3	$ 2,357,630	$ (1,799,581)	$ (1,881)	$ (1,360)	$ 1,360	$ 9,049	$ 565,220
Ending Balance at (in shares) at Jul. 31, 2025		29,645,294							29,645,294

FUELCELL ENERGY INC 10-Q