Variable Interest Entities - Narrative (Details) $ in Thousands							3 Months Ended
	Jul. 22, 2024 USD ($)	May 16, 2024 USD ($)	Jun. 02, 2023 USD ($) shares	May 09, 2023 USD ($) shares	Mar. 10, 2023 USD ($) shares	May 03, 2022 USD ($)	Mar. 31, 2026 USD ($)	May 14, 2026	Apr. 15, 2026	Dec. 31, 2025 USD ($)	Jul. 22, 2025 MW phase	Apr. 04, 2025	Feb. 28, 2025	Dec. 31, 2023	Jan. 01, 2023	Aug. 05, 2022 USD ($)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Discount rate							20.00%
Investment initial investors period							180 days
Total							$ 25,951			$ 26,757
Debt instrument, basis spread on variable rate							92.50%
Compute Co
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Adjustments to additional paid in capital	$ 4,600
Subsidiary ownership percentage	49.00%
Investment period							30 days
Investor Class B Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Debt instrument, interest rate							50.00%
Debt instrument, basis spread on variable rate							50.00%
Common Class B
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							18.00%
Debt instrument, basis spread on variable rate							16.00%
Common Class A
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Debt instrument, basis spread on variable rate							7.50%
Purchase and Sale Agreement | Parent Company
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Share issued (in shares) | shares					6,790,537
Equipment/ Land loan
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate													15.00%
Additions		$ 1,000
Total		720
Membership Interest Purchase Agreement | Subsequent event | Dorothy Project 1A Company
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Voting interests acquired (as a percentage)									100.00%
Spring Lane | Purchase and Sale Agreement
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Purchase price					$ 7,500
Share issued (in shares) | shares					39,791,988
Payment of related party					$ 5,800
Spring Lane
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage							67.80%
Spring Lane | Common Class A
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage							50.00%
Spring Lane | Purchase and Sale Agreement
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage					85.40%		85.40%
Investment interest rate					16.00%
Soluna DVSL ComputeCo, LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage							32.20%
Soluna DV Devco, LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage							100.00%
Parent | Purchase and Sale Agreement
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage					14.60%
Dorothy Phase 1A Facility | Purchase and Sale Agreement
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage					67.80%
DVSL HoldCo, LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage					50.00%
Interest rate							100.00%
DVSL ComputeCo, LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage							14.60%							67.80%	14.60%
Interest rate							14.60%
DVSL ComputeCo, LLC | Subsequent event
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage								85.40%
Navitas
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage			49.00%	26.50%			49.00%
Strategic partnership and financing			$ 7,600	$ 4,500
Membership interest, receipt (in shares) | shares			7,597	4,500
Receipt of membership interest, net (in shares) | shares			12,097
Soluna DV Compute Co LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage			51.00%				51.00%
Strategic partnership and financing			$ 1,340
Membership interest, receipt (in shares) | shares			1,340
Receipt of membership interest, net (in shares) | shares			12,590
Soluna DVSL ComputeCo, LLC | Common Class B
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							92.50%
Soluna DVSL ComputeCo, LLC | Common Class A
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							7.50%
Soluna DVSL ComputeCo, LLC | Class A Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							50.00%
Soluna DVSL ComputeCo, LLC | Class B Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							50.00%
Soluna Digital Inc
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage							0.00%
Soluna Digital Inc | Investor Class B Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage												0.00%
Soluna Digital Inc | Investor Class A Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage							100.00%					100.00%
KKSL JVCo | Investor Class B Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							13.00%
Maximum
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Capital contribution																$ 26,300
Maximum | DVSL ComputeCo, LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							58.00%
Minimum | Spring Lane | Purchase and Sale Agreement
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Payment of related party					$ 7,500
Minimum | DVSL ComputeCo, LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							42.00%
Spring Lane
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Proceeds from other debt						$ 45,000
Capital contribution																8,100
Spring Lane | Maximum
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Capital contribution																$ 12,500
DVSL II JVCo
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of mega watts | MW											48
Soluna2 SLC Fund II Project Holdco LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Adjustments to additional paid in capital	$ 29,980
Soluna2 SLC Fund II Project Holdco LLC | Investor Class B Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Line of credit facility, maximum borrowing capacity		$ 2,160
Soluna Digital Inc
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of mega watts | MW											83
Adjustments to additional paid in capital							$ 48,980
Soluna Digital Inc | Texas
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Number of mega watts | MW											166
Number of phases | phase											2
Soluna Digital Inc | KKSL JVCo | Investor Class B Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage							87.00%
Interest rate							100.00%
Soluna Digital Inc | KKSL JVCo | Class B Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							13.00%
Soluna Digital Inc | KKSL JVCo | Class A Membership Units
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							100.00%
Spring Lane Capital | Soluna2 Kati Project Holdco LLC | Investor Class B Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Equity interest ownership percentage							49.00%
Spring Lane Capital | Soluna2 Kati Project Holdco LLC | Class B Membership Interests
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							100.00%
Spring Lane Capital | Soluna2 Kati Project Holdco LLC | Class A Membership Units
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Interest rate							100.00%