Accounting Policies - Narrative (Details)						12 Months Ended
	Dec. 04, 2025 $ / shares shares	Jul. 17, 2025 USD ($)	Jul. 15, 2025 USD ($) shares	Oct. 01, 2024 USD ($) $ / shares shares	Jul. 12, 2024 USD ($)	Dec. 31, 2025 USD ($) segment $ / shares shares	Dec. 31, 2024 USD ($) shares	Nov. 07, 2025 shares	Sep. 28, 2025 shares	Jun. 20, 2024 USD ($)	Feb. 28, 2024 $ / shares shares	Dec. 31, 2023 USD ($)	Dec. 31, 2022 shares
Common stock, shares authorized (in shares) | shares						375,000,000	375,000,000
Placement agent warrants | shares						30,599,040					850,000
Proceeds from common stock warrant exercises						$ 10,272,000	$ 2,332,000
Fair value on placement agent warrant financing cost						$ 0	0
Class of warrant or right, exercise price of warrants or rights (in dollars per share) | $ / shares											$ 0.01
Class of warrant or right exercise period					3 years
Share price (in dollars per share) | $ / shares						$ 1.17
Deemed dividend				$ 1,700,000
Customer deposits-current						$ 19,348,000	20,015,000
Customer deposits- long-term						2,533,000	0
Provision for credit losses						0	760,000
Accounts receivable, allowance for credit loss						244,000	244,000					$ 0
Other receivables						15,000	178,000
Deposits and credits on equipment						1,377,000	5,145,000
Deposits							975,000
Credit on equipment usage value							195,000
Credit on equipment future purchases						780,000
Loss on credit deposit						780,000
Impairment on fixed assets						12,000	130,000
Restricted cash						12,400,000	2,600,000
Restricted cash						4,500,000	1,150,000
Restricted cash, noncurrent						7,920,000	1,460,000
Derivative liability						$ 0
Number of reportable segments | segment						3
Number of operating segments | segment						3
Cash						$ 88,100,000
Other Comprehensive Income (Loss), Tax						0	0
Fair value on placement agent warrant financing cost						$ 146,000	0
Cryptocurrency data hosting
Term of contract						2 years
Contract with customer, liability						$ 1,000,000.0
Customer deposits-current						518,000
Customer deposits- long-term						495,000
Accredited investor | Promissory Note Agreement
Convertible note										$ 12,500,000
New accredited investors | Secured Promissory Notes
Convertible note					$ 1,250,000
Property, plant and equipment
Impairment on fixed assets						12,000	130,000
Prepaid expenses and other current assets
Other receivables						15,000	82,000
Other noncurrent assets
Other receivables						0	$ 96,000
Warrants
Placement agent warrants | shares				140,000
Stock issued, new issues (in shares) | shares				60,000
July 2025 Offering
Sale of stock, number of shares issued in transaction (in shares) | shares			8,794,544
Series B preferred stock
Preferred stock, convertible, conversion price (in dollars per share) | $ / shares				$ 5
Share price (in dollars per share) | $ / shares				$ 135.25
Series B preferred stock | Warrants
Class of warrant or right, number of securities called by warrants or rights (in shares) | shares				140,000									60,000
Series B preferred stock | Additional warrants
Class of warrant or right, number of securities called by warrants or rights (in shares) | shares				140,000
Generate common warrant
Common stock, shares authorized (in shares) | shares								375,000,000
Placement agent warrants | shares									2,000,000.0
Generate common warrant						(3,800,000)
Pre funded warrants | December 2025 Purchase Agreement
Class of warrant or right, number of securities called by warrants or rights (in shares) | shares	12,149,200
Pre funded warrants | July 2025 Offering
Class of warrant or right, number of securities called by warrants or rights (in shares) | shares			296,365
Series A warrants | July 2025 Offering
Class of warrant or right, number of securities called by warrants or rights (in shares) | shares			9,090,909
Warrants and rights outstanding			$ 8,600,000
Proceeds from common stock warrant exercises						10,000,000.0
Series B warrants | July 2025 Offering
Class of warrant or right, number of securities called by warrants or rights (in shares) | shares			9,090,909
Proceeds from common stock warrant exercises						$ 10,000,000.0
Warrants | July 2025 Offering
Fair value on placement agent warrant financing cost		$ 12,800,000
Common Stock | December 2025 Purchase Agreement
Stock issued, new issues (in shares) | shares	5,929,944
Shares issued, price per share (in dollars per share) | $ / shares	$ 1.77
Series C warrants | December 2025 Purchase Agreement
Class of warrant or right, number of securities called by warrants or rights (in shares) | shares	18,079,144
Class of warrant or right, exercise price of warrants or rights (in dollars per share) | $ / shares	$ 1.65
Class of warrant or right exercise period	5 years
Placement agent warrants | December 2025 Purchase Agreement
Class of warrant or right, number of securities called by warrants or rights (in shares) | shares	903,957
Harmattan Energy Limited
Equity interest ownership percentage						1.79%	1.79%
Equity method investments						$ 0	$ 0
MEOH Power, Inc.
Equity interest ownership percentage						47.50%
Equity method investments						$ 0	$ 0
Investment owned, balance, shares | shares						75,049,937
Common stock, shares authorized (in shares) | shares						240,000,000
Minimum | Restricted stock
Service period						1 year
Maximum | Restricted stock
Service period						3 years
Strategic pipeline contract
Acquired finite-lived intangible assets, weighted average useful life						5 years
Assembled workforce
Acquired finite-lived intangible assets, weighted average useful life						5 years
Patents | Minimum
Acquired finite-lived intangible assets, weighted average useful life						15 years
Patents | Maximum
Acquired finite-lived intangible assets, weighted average useful life						25 years