Organization and Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Thousands, shares in Millions			12 Months Ended
	Dec. 21, 2023 USD ($) $ / shares shares	May 15, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Organization And Basis Of Presentation [Line Items]
Proceeds from sale of mortgage loans held for sale			$ 251,797	$ 522,252	$ 1,228,021
Loss on sale of LSMG			$ 2,098	4,451	21,432
Leverage ratio			0.10
Capital ratio			0.13
Net (loss) income			$ (51,773)	$ 17,334	$ 52,480
Goodwill, Impairment Loss, Net of Tax			26,600
Estimated Litigation Liability			$ 4,800
Securities Purchase Agreement [Member]
Organization And Basis Of Presentation [Line Items]
Shares issued during period | shares	60.0
Purchase price | $ / shares	$ 2.5
Warrants purchase | shares	29.4
Common stock at exercise price | $ / shares	$ 2.5
Proceeds from issuance of private placement	$ 150,000
Private Placement [Member]
Organization And Basis Of Presentation [Line Items]
Purchaser remittance by waving private placement	130,000
Employee stock ownership plan (ESOP), plan description			(i) receipt by Mr. Lehman and Castle Creek of any required bank regulatory approvals, waivers, or non-objections; (ii) the shares and warrant shares having been authorized for listing on the NYSE American market; (iii) the Purchasers having remitted an aggregate of at least $130 million (including at least $3.1 million by directors and executive officers of the Company); and (iv) the Bank complying with certain minimum capital requirements.
Private Placement [Member] | Directors and Executive Officers [Member]
Organization And Basis Of Presentation [Line Items]
Purchaser remittance by waving private placement	3,100
Private Placement [Member] | Maximum [Member]
Organization And Basis Of Presentation [Line Items]
Proceeds from issuance of private placement	$ 150,000
Lender Select Mortgage Group [Member]
Organization And Basis Of Presentation [Line Items]
Proceeds from sale of mortgage loans held for sale		$ 250
Lender Select Mortgage Group [Member] | Other Noninterest Income [Member]
Organization And Basis Of Presentation [Line Items]
Loss on sale of LSMG			$ 553