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Basis of Presentation (Policies) | 9 Months Ended
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Sep. 30, 2023
Accounting Policies [Abstract] |
Principles of Consolidation | Principles of Consolidation The condensed unaudited consolidated financial statements include the accounts of the Company and its wholly-owned subsidiary, SCI. All intercompany balances and transactions are eliminated in consolidation.
Reverse Stock Split | Reverse Stock Split On October 11, 2023, the Company filed a Certificate of Change (the “Certificate of Change”) effecting a reverse stock split as of 5:00 p.m. Eastern Standard Time on October 13, 2023 with a ratio of 1-for-25 (the “Reverse Split”). The Company’s common stock began trading on a post-split basis under the Company’s existing trading symbol, “SLNH,” when the market opened on October 16, 2023. The reverse stock split was approved by the Board of Directors and by shareholders at the annual meeting of the stockholders on June 29, 2023. At the effective time, every 25 issued and outstanding shares of the Company common stock was converted automatically into one share of the Company’s common stock without any change in the par value per share. The Reverse Split did not change the number of shares of common stock authorized for issuance. No fractional shares were outstanding following the Reverse Split. Any holder who would have received a fractional share of common stock was automatically entitled to receive an additional fraction of a share of common stock to round up to the next whole share. The primary goal of the Reverse Stock Split was to increase the per share price of the Common Stock in order to meet the minimum per share price requirement of $1.00 for continued listing on the Nasdaq. On October 30, 2023, the Company received a notice of compliance from NASDAQ. In addition, effective as of the same time as the Reverse Split, proportionate adjustments were made to all then-outstanding equity awards, warrants and convertible securities with respect to the number of shares of common stock subject to such award or security and the exercise or conversion price thereof. Furthermore, the number of shares of common stock available for issuance under the Company’s equity incentive plans has been proportionately adjusted for the Reverse Split ratio, such that fewer shares will be subject to such plans. Furthermore, proportionate adjustments were made to the conversion factor at which the Company’s Series B Preferred Stock, par value $0.0001 per share (the “Series B Preferred Stock”), may be converted to Common Stock. The total number of shares of Series B Preferred Stock of the Company authorized for issuance remained at 187,500. The effects of the Reverse Stock Split have been reflected in these condensed unaudited consolidated financial statements and the accompanying footnotes for all periods presented, which includes adjusting the description of any activity that may have been transacted on a pre-Reverse Stock Split basis.
Cash and Cash Equivalents and Restricted Cash | Cash and Cash Equivalents and Restricted Cash Cash and cash equivalents consist of cash and highly liquid short-term investments with original maturities of less than three months. As of September 30, 2023 and December 31, 2022, the Company had approximately $5.6 million and $1.1 million within cash and cash equivalents. In addition, for cash flow purposes, the Company had approximately $1.1 million as of September 30, 2022 within cash and cash equivalents. Restricted cash relates to cash that is legally restricted as to withdrawal and usage or is being held for a specific purpose and thus not available to the Company for immediate or general business use. As of September 30, 2023, the Company had restricted cash of approximately $4.4 million, in which $3.4 million was classified as current and $1.0 million was classified as non-current. On December 31, 2022, the Company had restricted cash of approximately $685 thousand, in which the entire balance was classified as current. The Company notes that there was no restricted cash balance as of September 30, 2022 for cash flow purposes. The balance in restricted cash relates to funds held in escrow accounts due to sales of equipment that were executed, in which the Company can release to the convertible noteholders only if they request their share of funds. If no funds are distributed to the convertible noteholders from the escrow account by December 31, 2023, the funds may be used for general purposes for the Company. In addition, there was a restricted deposit held with a customer that was for less than 12 months. The Company has a long term restricted cash balance in relation to a collateralized deposit.
Deposits and credits on equipment | Deposits and credits on equipment As of September 30, 2023 and December 31, 2022, the Company had approximately $975 thousand and $1.2 million in deposits and credits on equipment, that had not yet been received by the Company as of the year end. Once the Company receives such equipment in the subsequent period, the Company will reclassify such balance into Property, Plant, and Equipment. The credit on equipment is restricted to be used on future purchases by March 1, 2024 (“expiration date”). The Company notes that if an order is not executed by the expiration date, the credit would be forfeited. The Company intends to utilize the full credit balance for future orders prior to the expiration date.
Reclassification | Reclassification Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations or net assets.

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- Definition Deposits and Credits Equipments [Policy Text Block] + References No definition available. + Details
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- Definition :Reverse Stock Split [PolicyTextBlock] + References No definition available. + Details
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- Definition Entity's cash and cash equivalents accounting policy with respect to restricted balances. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(1)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-1 + Details
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- Definition Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483426/235-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481203/810-10-50-1 + Details
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- Definition Disclosure of accounting policy for reclassification affecting comparability of financial statement. Excludes amendment to accounting standards, other change in accounting principle, and correction of error. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 205 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483504/205-10-50-1 + Details
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