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Subsequent Events (Q3) (Details)								1 Months Ended					9 Months Ended		10 Months Ended	12 Months Ended
	Dec. 11, 2023 USD ($) Extension $ / shares shares	Nov. 30, 2023 USD ($)	Nov. 01, 2023 USD ($)	Oct. 16, 2023 Shareholder	Oct. 01, 2023 USD ($)	Apr. 25, 2023 USD ($) Extension $ / shares shares	Apr. 05, 2023 USD ($) Extension $ / shares	Jan. 25, 2024 USD ($)	Dec. 31, 2023 USD ($)	Nov. 30, 2023 USD ($)	Oct. 31, 2023 USD ($)	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($) shares	Dec. 31, 2022 USD ($) $ / shares shares
Subsequent Events [Abstract]
Period of extension to consummate business combination													1 month			1 month
Trust extension funding													$ 975,000	$ 0
Lenders contribution deposited in trust account						$ 162,500
Lenders contribution deposited in trust account (dollar per share) | $ / shares						$ 0.0325
Cash deposited in Trust Account															$ 234,600,000	$ 0
Amount drawn													1,025,000	$ 0
Outstanding amount												$ 1,025,000	1,025,000			0
Promissory Note [Member]
Subsequent Events [Abstract]
Outstanding amount												$ 1,025,000	$ 1,025,000			$ 0
Class A Common Stock [Member]
Subsequent Events [Abstract]
Common stock subject to possible redemption (in shares) | shares						17,297,209						5,702,791	5,702,791		23,000,000	23,000,000
Redemption price (in dollars per share) | $ / shares						$ 10.4						$ 10.79	$ 10.79			$ 10.31
Aggregate redemption amount						$ 179,860,588						$ 179,860,588	$ 179,860,588
Trust extension funding													$ 975,000			$ 0
Maximum [Member]
Subsequent Events [Abstract]
Number of extensions to extend time to consummate a business combination | Extension						9
Subsequent Event [Member]
Subsequent Events [Abstract]
Minimum number of public holders required for continued listing | Shareholder				400
Notice period for minimum public holders rule				45 days
Additional cash deposited in Trust Account										$ 162,500	$ 162,500
Trust extension funding										1,300,000	1,137,500
Lenders contribution deposited in trust account							$ 1,462,500
Lenders contribution deposited in trust account (dollar per share) | $ / shares							$ 0.2925
Cash deposited in Trust Account	$ 103,055
Subsequent Event [Member] | Promissory Note [Member]
Subsequent Events [Abstract]
Amount drawn			$ 162,500		$ 162,500				$ 25,000	$ 187,500	$ 100,000	$ 50,000
Outstanding amount								$ 1,500,000
Subsequent Event [Member] | Second Promissory Note [Member]
Subsequent Events [Abstract]
Amount drawn		$ 162,500						170,000	$ 205,000
Outstanding amount								$ 375,000
Subsequent Event [Member] | Class A Common Stock [Member]
Subsequent Events [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 (dollar per share) | $ / shares	$ 0.06
Subsequent Event [Member] | Maximum [Member]
Subsequent Events [Abstract]
Number of extensions to extend time to consummate a business combination | Extension	7						9

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- Definition

Additional amount of cash outflow for purchase of marketable security.

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The per share amount of lenders contribution as loan not redeemed in connection with the Extension Meeting, to be deposited into the Trust Account.

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The minimum number of public holders required for continued listing on the Nasdaq Global Market.

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Period from the date of the Notice to submit a plan to regain compliance with the Minimum Public Holders Rule, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of times permitted to extend period of time to consummate a business combination.

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The period of time for each extension to consummate a Business Combination after charter extension date, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of cash outflow for trust extension funding.

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- Definition

Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

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Amount of cash outflow for purchase of marketable security.

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The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

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Aggregate amount of redemption requirements for each class or type of redeemable stock classified as temporary equity for each of the five years following the latest balance sheet date. The redemption requirement does not constitute an unconditional obligation that will be settled in a variable number of shares constituting a monetary value predominantly indexed to (a) a fixed monetary amount known at inception, (b) an amount inversely correlated with the residual value of the entity, or (c) an amount determined by reference to something other than the fair value of issuer's stock. Does not include mandatorily redeemable stock. The exception is if redemption is required upon liquidation or termination of the reporting entity.

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Amount to be paid per share that is classified as temporary equity by entity upon redemption. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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