Related Party Transactions (Details Narrative) - USD ($) $ in Thousands				12 Months Ended
	Oct. 29, 2021	Mar. 23, 2020	Jan. 13, 2020	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021
Related Party Transaction [Line Items]
Company paid	$ 725,000			$ 245	$ 77
Professional fees				19	95
Cost of investments				237
Investment percentage						20.00%
Aggregate purchase price				$ 500
Chief Executive Officer [Member] | Michael Toporek [Member]
Related Party Transaction [Line Items]
Description of director owns				(i) 90% of the equity of Soluna Technologies Investment I, LLC, which owns 57.9% of HEL and (ii) 100% of the equity of MJT Park Investors, Inc., which owns 3.1% of HEL, in each case on a fully-diluted basis. Mr. Toporek does not own directly, or indirectly, any equity interest in Tera Joule, LLC, which owns 9.2% of HEL; however, as a result of his 100% ownership of Brookstone IAC, Inc., which is the manager of Tera Joule, LLC, he has dispositive power over the equity interests that Tera Joule owns in HEL.
Chief Executive Officer [Member] | Matthew E Lipman [Member]
Related Party Transaction [Line Items]
Description of director owns				which owns 9.2% of HEL; however, as a result of his position as a director and officer of Brookstone IAC, Inc., which is the manager of Tera Joule, LLC, he has dispositive power over the equity interests that Tera Joule owns in HEL. As a result, the approximate dollar value of the amount of Mr. Toporek’s and Mr. Lipman’s interest in the Company’s transactions with HEL through December 31, 2021, were $19.9 million and $0, respectively.
Chief Executive Officer [Member] | Mr Belizaire [Member]
Related Party Transaction [Line Items]
Description of director owns				owner of 1,317,567 shares of common stock of HEL and 102,380 Class Seed Preferred shares, which are convertible into 86,763 shares of common stock of HEL. These interests give Mr. Belizaire an ownership of 10.54% in HEL. Mr. Belizaire also owns an interest in HEL indirectly through his 5.0139% interest of Tera Joule, LLC’s 965,945 Class Seed Preferred shares, which are convertible into 818,596 shares of common stock of HEL. Mr. Bottomley is the beneficial owner of 96,189, or approximately 0.72%, of the outstanding shares of common stock of HEL.
Soluna [Member]
Related Party Transaction [Line Items]
Company paid				$ 65,000	350,000
Acquire additional assets				112
Description of agreement			Technologies Investment I, LLC, a Delaware limited liability company that owns, on a fully diluted basis, 57.9%
Soluna [Member] | Class A Preferred Shares [Member]
Related Party Transaction [Line Items]
Cost of investments		$ 250
Investment shares purchased		79,365	158,730
Soluna [Member] | Operating And Management Agreement 3 [Member]
Related Party Transaction [Line Items]
Company paid				380
Soluna [Member] | Operating And Management Agreement 2 [Member]
Related Party Transaction [Line Items]
Company paid				221	150
Soluna [Member] | Operating And Management Agreement 4 [Member]
Related Party Transaction [Line Items]
Company paid					38,000
Soluna [Member] | Operating And Management Agreement 5 [Member]
Related Party Transaction [Line Items]
Company paid				544
Me O H Power [Member]
Related Party Transaction [Line Items]
Promissory Note available to convert				329	$ 321
H E L [Member]
Related Party Transaction [Line Items]
Cost of investments				$ 750
Investment percentage				1.79%