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Organization and Business Operations, Extension of Combination Period (Q3) (Details) |  |  |  | 1 Months Ended | 9 Months Ended | 12 Months Ended |  |
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Dec. 11, 2023 USD ($) Extension $ / shares shares | Apr. 25, 2023 USD ($) Extension $ / shares shares | Apr. 05, 2023 USD ($) Extension $ / shares | Nov. 30, 2023 USD ($) | Oct. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) $ / shares shares | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) $ / shares shares | May 09, 2023 USD ($) $ / shares | Dec. 31, 2021 shares
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Period of extension to consummate business combination |  |  |  |  |  | 1 month |  | 1 month |  |
Period of advance notice to consummate initial business combination |  |  |  |  |  | 5 days |  | 5 days |  |
Period of additional charter extension date |  |  |  |  |  | 12 months |  |  |  |
Redemption limitation amendment proposal amount |  | $ 5,000,000 |  |  |  |  |  |  |  |
Number of business days |  |  |  |  |  | 10 days |  |  |  |
Lenders contribution deposited in trust account |  | $ 162,500 |  |  |  |  |  |  |  |
Lenders contribution deposited in trust account (in dollars per share) | $ / shares |  | $ 0.0325 |  |  |  |  |  |  |  |
Trust extension funding |  |  |  |  |  | $ 975,000 | $ 0 |  |  |
Warrants price (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 1 |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Lenders contribution deposited in trust account |  |  | $ 1,462,500 |  |  |  |  |  |  |
Lenders contribution deposited in trust account (in dollars per share) | $ / shares |  |  | $ 0.2925 |  |  |  |  |  |  |
Trust extension funding |  |  |  | $ 1,300,000 | $ 1,137,500 |  |  |  |  |
Additional cash deposited in Trust Account |  |  |  | $ 162,500 | $ 162,500 |  |  |  |  |
Sponsor [Member] |  |  |  |  |  |  |  |  |  |
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  |  | $ 487,500 |
Class A Common Stock [Member] |  |  |  |  |  |  |  |  |  |
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Common stock subject to possible redemption (in shares) | shares |  | 17,297,209 |  |  |  | 5,702,791 |  | 23,000,000 |  | 23,000,000
Common stock subject to possible redemption (in dollars per share) | $ / shares |  | $ 0.0001 |  |  |  |  |  |  |  |
Redemption price (in dollars per share) | $ / shares |  | $ 10.4 |  |  |  | $ 10.79 |  | $ 10.31 |  |
Aggregate redemption amount |  | $ 179,860,588 |  |  |  | $ 179,860,588 |  |  |  |
Trust extension funding |  |  |  |  |  | 975,000 |  | $ 0 |  |
Class A Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Common stock subject to possible redemption (in shares) | shares | 3,985,213 |  |  |  |  |  |  |  |  |
Redemption price (in dollars per share) | $ / shares | $ 10.95 |  |  |  |  |  |  |  |  |
Aggregate redemption amount | $ 43,638,082 |  |  |  |  |  |  |  |  |
Lenders contribution deposited in trust account | $ 120,000 |  |  |  |  |  |  |  |  |
Lenders contribution deposited in trust account (in dollars per share) | $ / shares | $ 0.06 |  |  |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Number of extensions to extend time to consummate a business combination | Extension |  | 9 |  |  |  |  |  |  |  |
Period of additional charter extension date |  |  |  |  |  |  |  | 12 months |  |
Maximum [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Number of extensions to extend time to consummate a business combination | Extension | 7 |  | 9 |  |  |  |  |  |  |
Maximum [Member] | Promissory Note [Member] |  |  |  |  |  |  |  |  |  |
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  | $ 1,500,000 |  |  | $ 1,500,000 |
IPO [Member] |  |  |  |  |  |  |  |  |  |
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Lenders contribution deposited in trust account |  | $ 487,500 |  |  |  |  |  |  |  |
Lenders contribution deposited in trust account (in dollars per share) | $ / shares |  | $ 0.0975 |  |  |  |  |  |  |  |
IPO [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Extension of Combination Period [Abstract] |  |  |  |  |  |  |  |  |  |
Lenders contribution deposited in trust account |  |  | $ 487,500 |  |  |  |  |  |  |
Lenders contribution deposited in trust account (in dollars per share) | $ / shares |  |  | $ 0.0975 |  |  |  |  |  |  |

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