Derivatives - Narrative (Details)	3 Months Ended		7 Months Ended	9 Months Ended
	Mar. 31, 2024 USD ($) swap	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($) swap	Sep. 15, 2023	Dec. 31, 2023 USD ($)
Derivatives, Fair Value [Line Items]
Collateral requirement threshold	$ 250,000
Collateral posted	564,000		$ 564,000		$ 566,000
Derivative notional amount	$ 216,400,000		$ 216,400,000		218,000,000
Number of derivatives | swap	20		20
Interest and fee income, commercial loans	$ 63,000	$ 0
Residential Mortgage Holding Company
Derivatives, Fair Value [Line Items]
Commitments to originate mortgage loans held for sale	56,200,000		$ 56,200,000		22,900,000
Secured Overnight Financing Rate (SOFR)
Derivatives, Fair Value [Line Items]
Tenor spread adjustment			0.0026
Subordinated debt
Derivatives, Fair Value [Line Items]
Junior subordinated debenture	$ 10,000,000		$ 10,000,000
Junior subordinated debenture, effective interest rate (percent)	3.72%		3.72%
Debt instrument, interest rate during period (percent)	6.96%
Subordinated debt | LIBOR
Derivatives, Fair Value [Line Items]
Debt instrument, basis spread on variable rate (percent)				1.37%
Subordinated debt | Secured Overnight Financing Rate (SOFR)
Derivatives, Fair Value [Line Items]
Debt instrument, basis spread on variable rate (percent)			1.37%
Variable to Fixed
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 108,200,000		$ 108,200,000
Number of derivatives | swap	20		20
Fixed to Variable
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 108,200,000		$ 108,200,000
Number of derivatives | swap	20		20
Interest rate swaps | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Cash pledged to collateralize fair value exposure on interest rate swap	$ 130,000		$ 130,000		130,000
Unrealized gain (loss) on interest rate swap	$ 1,200,000		$ 1,200,000		$ 1,000,000