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Fair Value Measurements (Q3) (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022
Fair Value Measurements [Abstract] |  |
Schedule of Company's Liabilities that are Measured at Fair Value | The following tables present information about the Company’s assets and liabilities that are measured at fair value on September 30, 2023 and December 31, 2022, and indicates the fair value hierarchy of the valuation inputs the Company utilized to determine such fair value:
| ​ | ​ | September 30, 2023 | ​ | ​ | Quoted Prices In Active Markets (Level 1) | ​ | ​ | Significant Other Observable Inputs (Level 2) | ​ | ​ | Significant Other Unobservable Inputs (Level 3)
Assets: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Cash and marketable securities held in trust | ​ | ​ | $10,651,566 | ​ | ​ | $10,651,566 | ​ | ​ | — | ​ | ​ | —
| ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Liabilities: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Warrant liabilities – Public Warrants | ​ | ​ | $351,038 | ​ | ​ | $351,038 | ​ | ​ | $— | ​ | ​ | $—
Warrant liabilities – Private Placement Warrants | ​ | ​ | 293,900 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 293,900
Warrant liabilities – Representative’s Warrants | ​ | ​ | 22,770 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 22,770
Convertible promissory note | ​ | ​ | 601,239 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 601,239
Total | ​ | ​ | $1,268,947 | ​ | ​ | $351,038 | ​ | ​ | $— | ​ | ​ | $917,909
| ​ | ​ | December 31, 2022 | ​ | ​ | Quoted Prices In Active Markets (Level 1) | ​ | ​ | Significant Other Observable Inputs (Level 2) | ​ | ​ | Significant Other Unobservable Inputs (Level 3)
Liabilities: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Warrant liabilities – Public Warrants | ​ | ​ | $450,656 | ​ | ​ | $450,656 | ​ | ​ | $— | ​ | ​ | $—
Warrant liabilities – Private Placement Warrants | ​ | ​ | 377,857 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 377,857
Warrant liabilities – Representative’s Warrants | ​ | ​ | 29,274 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 29,274
Total | ​ | ​ | $857,787 | ​ | ​ | $450,656 | ​ | ​ | $— | ​ | ​ | $407,131
| ​ | ​ | December 31, 2022 | ​ | ​ | Quoted Prices In Active Markets (Level 1) | ​ | ​ | Significant Other Observable Inputs (Level 2) | ​ | ​ | Significant Other Unobservable Inputs (Level 3)
Liabilities: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Warrant liabilities – Public Warrants | ​ | ​ | $450,656 | ​ | ​ | $450,656 | ​ | ​ | $— | ​ | ​ | $—
Warrant liabilities – Private Placement Warrants | ​ | ​ | 377,857 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 377,857
Warrant liabilities – Representative’s Warrants | ​ | ​ | 29,274 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 29,274
Total | ​ | ​ | $857,787 | ​ | ​ | $450,656 | ​ | ​ | $— | ​ | ​ | $407,131
| ​ | ​ | December 31, 2021 | ​ | ​ | Quoted Prices In Active Markets (Level 1) | ​ | ​ | Significant Other Observable I Inputs (Level 2) | ​ | ​ | Significant Other Unobservable Inputs (Level 3)
Liabilities: | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |
Warrant liabilities – Public Warrants | ​ | ​ | $3,890,177 | ​ | ​ | $— | ​ | ​ | $— | ​ | ​ | $3,890,177
Warrant liabilities – Private Placement Warrants | ​ | ​ | 3,086,701 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 3,086,701
Warrant liabilities – Representative’s Warrants | ​ | ​ | 239,144 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 239,144
Total | ​ | ​ | $7,216,022 | ​ | ​ | $— | ​ | ​ | $— | ​ | ​ | $7,216,022
Schedule of Inputs into the Monte Carlo Simulation | The key inputs into the Monte Carlo simulation model for the warrant liabilities and convertible promissory note were as follows at September 30, 2023 and December 31, 2022:
| ​ | ​ | September 30, 2023 | ​ | ​ | December 31, 2022
Input | ​ | ​ |  | ​ | ​ |
Risk-free interest rate | ​ | ​ | 5.50% | ​ | ​ | 4.74%
Expected term (years) | ​ | ​ | 0.75 | ​ | ​ | 0.90
Expected volatility | ​ | ​ | 3.3% | ​ | ​ | 7.7%
Exercise price | ​ | ​ | $11.50 | ​ | ​ | $11.50
Fair value of Common stock | ​ | ​ | $10.79 | ​ | ​ | $10.13
| ​ | ​ | December 31, 2022 | ​ | ​ | December 31, 2021
Input | ​ | ​ |  | ​ | ​ |
Risk-free interest rate | ​ | ​ | 4.74% | ​ | ​ | 1.37%
Expected term (years) | ​ | ​ | .90 | ​ | ​ | 6.25
Expected volatility | ​ | ​ | 7.7% | ​ | ​ | 10.8%
Exercise price | ​ | ​ | $11.50 | ​ | ​ | $11.50
Fair value of Common stock | ​ | ​ | $10.13 | ​ | ​ | $9.07
Schedule of the Changes in the Fair Value of Financial Instruments | The following table provides a summary of the changes in the fair value of the Company’s Level 3 financial instruments that are measured at fair value on a recurring basis for the three and nine months ended September 30, 2023 and 2022:
| ​ | ​ | Private Placement Warrants | ​ | ​ | Public Warrants | ​ | ​ | Representative’s Warrants | ​ | ​ | Warrant Liability
Fair value at December 31, 2022 | ​ | ​ | $377,857 | ​ | ​ | $— | ​ | ​ | $29,274 | ​ | ​ | $407,131
Change in fair value of warrant liabilities | ​ | ​ | 246,681 | ​ | ​ | — | ​ | ​ | 19,112 | ​ | ​ | 265,793
Fair value at March 31, 2023 | ​ | ​ | 624,538 | ​ | ​ | — | ​ | ​ | 48,386 | ​ | ​ | 672,924
Change in fair value of warrant liabilities | ​ | ​ | (433,503) | ​ | ​ | — | ​ | ​ | (33,585) | ​ | ​ | (467,088)
Fair value at June 30, 2023 | ​ | ​ | 191,035 | ​ | ​ | — | ​ | ​ | 14,801 | ​ | ​ | 205,836
Change in fair value of warrant liabilities | ​ | ​ | 102,865 | ​ | ​ | — | ​ | ​ | 7,969 | ​ | ​ | 110,834
Fair value at September 30, 2023 | ​ | ​ | $293,900 | ​ | ​ | $— | ​ | ​ | $22,770 | ​ | ​ | $316,670
| ​ | ​ | Private Placement Warrants | ​ | ​ | Public Warrants | ​ | ​ | Representative’s Warrants | ​ | ​ | Warrant Liability
Fair value at December 31, 2021 | ​ | ​ | $3,086,701 | ​ | ​ | $3,890,177 | ​ | ​ | $239,144 | ​ | ​ | $7,216,022
Change in fair value of warrant liabilities | ​ | ​ | (1,660,759) | ​ | ​ | (2,088,501) | ​ | ​ | (128,669) | ​ | ​ | (3,877,929)
Transfer out of Level 3 to Level 1 | ​ | ​ | — | ​ | ​ | (1,801,676) | ​ | ​ | — | ​ | ​ | (1,801,676)
Fair value at March 31, 2022 | ​ | ​ | 1,425,942 | ​ | ​ | — | ​ | ​ | 110,475 | ​ | ​ | 1,536,417
Change in fair value of warrant liabilities | ​ | ​ | (541,990) | ​ | ​ | — | ​ | ​ | (41,991) | ​ | ​ | (583,981)
Fair value at June 30, 2022 | ​ | ​ | 883,952 | ​ | ​ | — | ​ | ​ | 68,484 | ​ | ​ | 952,436
Change in fair value of warrant liabilities | ​ | ​ | (468,803) | ​ | ​ | — | ​ | ​ | (36,321) | ​ | ​ | (505,124)
Fair value at September 30, 2022 | ​ | ​ | $415,149 | ​ | ​ | $— | ​ | ​ | $32,163 | ​ | ​ | $447,312
| ​ | ​ | Private Placement Warrants | ​ | ​ | Public Warrants | ​ | ​ | Representative’s Warrants | ​ | ​ | Warrant Liability
Fair value at December 31, 2021 | ​ | ​ | $3,086,701 | ​ | ​ | $3,890,177 | ​ | ​ | $239,144 | ​ | ​ | $7,216,022
Change in fair value of warrant liabilities | ​ | ​ | (2,708,844) | ​ | ​ | (2,088,501) | ​ | ​ | (209,870) | ​ | ​ | (5,007,215)
Transfer out of Level 3 to Level 1 | ​ | ​ | — | ​ | ​ | (1,801,676) | ​ | ​ | — | ​ | ​ | (1,801,676)
Fair value at December 31, 2022 | ​ | ​ | $377,857 | ​ | ​ | $— | ​ | ​ | $29,274 | ​ | ​ | $407,131
Schedule of Convertible Promissory Note |
| ​ | ​ | Convertible Promissory Note
Fair value at December 31, 2022 | ​ | ​ | $—
Principal borrowing | ​ | ​ | 713,015
Change in fair value of convertible promissory note | ​ | ​ | (111,776)
Fair value at September 30, 2023 | ​ | ​ | $601,239

X
- Definition Tabular disclosure of all significant concentrations of risk, including credit risk and market risk, arising from all financial instruments (as defined), whether from an individual counterparty or groups of counterparties. The disclosure concerning concentrations of risk may consist of the following information: (1) for concentrations of credit risk disclosure may include: (a) information about the (shared) activity, region, or economic characteristic that identifies the concentration, (b) the maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity, (c) the policy of requiring collateral or other security to support financial instruments subject to credit risk, information about the entity's access to that collateral or other security, and the nature and a brief description of the collateral or other security supporting those financial instruments, and (d) the policy of entering into master netting arrangements to mitigate the credit risk of financial instruments, information about the arrangements for which the entity is a party, and a brief description of the terms of those arrangements, including the extent to which they would reduce the entity's maximum amount of loss due to credit risk and (2) for disclosure of quantitative information about the market risks of financial instruments that is consistent with the way the company manages or adjusts those risks, disclosure may include: (a) more details about current positions and perhaps activity during the period, (b) the hypothetical effects on comprehensive income (or net assets), or annual income, of several possible changes in market prices, (c) a gap analysis of interest rate re-pricing or maturity dates, (d) the duration of the financial instruments, (e) the entity's value at risk from derivatives and from other positions at the end of the reporting period and the average value at risk during the year, or (f) other ways of reporting quantitative information as internally developed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-21 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-23 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-20 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-22 + Details
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- Definition Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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- Definition Tabular disclosure of the reconciliation of beginning and ending balances of the fair value of plan assets of pension plans and/or other employee benefit plans showing separately, if applicable, the effects during the period attributable to each of the following: actual return on plan assets, foreign currency exchange rate changes, contributions by the employer, contributions by plan participants, benefits paid, business combinations, divestitures, and settlements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (b) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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