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v3.23.3

Recurring Fair Value Measurements, Changes in Fair Value of Warrant Liabilities (FY) (Details) - Level 3 [Member] - USD ($) | 3 Months Ended | 10 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2021 | Dec. 31, 2022
Changes in Fair Value of Warrant Liabilities [Roll Forward] |  |  |  |  |  |
Fair value, beginning of period |  | $ 784,000 | $ 560,000 | $ 560,000 | $ 0 | $ 5,824,000
Initial fair value of the warrants |  |  |  |  | 16,571,000 |
Public Warrants reclassified to level 1 | [1] |  |  |  | (5,980,000) |
Change in fair value |  | 112,000 | 224,000 | 0 | $ (4,767,000) | $ (5,264,000)
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  | Change in fair value of warrant liabilities | Change in fair value of warrant liabilities
Fair value, end of period |  | $ 896,000 | $ 784,000 | $ 560,000 | $ 5,824,000 | $ 560,000
[1] | Assumes the Public Warrants were reclassified on December 31, 2021.

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- Definition Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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