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Fair Value Measurements - Schedule of the Changes in the Fair Value of Financial Instruments (Q3) (Details) - USD ($) | 3 Months Ended | 8 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Schedule of the Changes in the Fair Value of Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |
Change in fair value of warrant liabilities | $ 243,659 |  |  | $ (1,074,374) |  |  | $ (597,567) | $ (190,079) | $ (6,246,897) | $ (6,358,235)
Private Placement Warrants [Member] |  |  |  |  |  |  |  |  |  |
Schedule of the Changes in the Fair Value of Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value, Beginning balance | 191,035 | $ 624,538 | $ 377,857 | 883,952 | $ 1,425,942 | $ 3,086,701 |  | 377,857 | 3,086,701 | 3,086,701
Change in fair value of warrant liabilities | 102,865 | (433,503) | 246,681 | (468,803) | (541,990) | (1,660,759) |  |  |  |
Transfer out of Level 3 to Level 1 |  |  |  |  |  |  |  |  |  |
Fair value, Ending balance | 293,900 | 191,035 | 624,538 | 415,149 | 883,952 | 1,425,942 | 3,086,701 | 293,900 | 415,149 | 377,857
Public Warrants [Member] |  |  |  |  |  |  |  |  |  |
Schedule of the Changes in the Fair Value of Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value, Beginning balance |  |  |  |  |  | 3,890,177 |  |  | 3,890,177 | 3,890,177
Change in fair value of warrant liabilities |  |  |  |  |  | (2,088,501) |  |  |  |
Transfer out of Level 3 to Level 1 |  |  |  |  |  | (1,801,676) |  |  |  | (1,801,676)
Fair value, Ending balance |  |  |  |  |  |  | 3,890,177 |  |  |
Representative's Warrants [Member] |  |  |  |  |  |  |  |  |  |
Schedule of the Changes in the Fair Value of Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value, Beginning balance | 14,801 | 48,386 | 29,274 | 68,484 | 110,475 | 239,144 |  | 29,274 | 239,144 | 239,144
Change in fair value of warrant liabilities | 7,969 | (33,585) | 19,112 | (36,321) | (41,991) | (128,669) |  |  |  |
Transfer out of Level 3 to Level 1 |  |  |  |  |  |  |  |  |  |
Fair value, Ending balance | 22,770 | 14,801 | 48,386 | 32,163 | 68,484 | 110,475 | 239,144 | 22,770 | 32,163 | 29,274
Warrant Liability [Member] |  |  |  |  |  |  |  |  |  |
Schedule of the Changes in the Fair Value of Financial Instruments [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value, Beginning balance | 205,836 | 672,924 | 407,131 | 952,436 | 1,536,417 | 7,216,022 |  | 407,131 | 7,216,022 | 7,216,022
Change in fair value of warrant liabilities | 110,834 | (467,088) | 265,793 | (505,124) | (583,981) | (3,877,929) |  |  |  |
Transfer out of Level 3 to Level 1 |  |  |  |  |  | (1,801,676) |  |  |  | (1,801,676)
Fair value, Ending balance | $ 316,670 | $ 205,836 | $ 672,924 | $ 447,312 | $ 952,436 | $ 1,536,417 | $ 7,216,022 | $ 316,670 | $ 447,312 | $ 407,131

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- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 25 -Paragraph 13 -SubTopic 10 -Topic 480 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481766/480-10-25-13 + Details
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