Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	3 Months Ended
	Nov. 30, 2023	Sep. 30, 2022	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Sep. 17, 2018
Accounting Policies [Line Items]
Date of incorporation			Apr. 06, 2018
Net proceeds from issuance of common stock			$ 45	$ 54
Common stock, par value			$ 0.01		$ 0.01
Retained earnings			$ 32,507		$ 19,947
Accrued interest receivable on held-to-maturity debt securities			168
Accrued interest receivable on available for sale debt securities			884
Allowance on held-to-maturity securities			421		459
Loans receivable			$ 2,247,322		$ 2,229,314
IPO [Member]
Accounting Policies [Line Items]
Sale of common stock		5,101,205
Offering price per share		$ 7.5
Net proceeds from issuance of common stock		$ 34,659
Underwriting discounts and commissions		2,487
Other offering expenses		$ 1,114
Private Placement [Member]
Accounting Policies [Line Items]
Net proceeds from issuance of common stock	$ 10,000
ASU 2023-07 [Member]
Accounting Policies [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adoption Date			Jan. 31, 2024
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]			true
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]			true
Stonebridge Bank [Member]
Accounting Policies [Line Items]
Business acquistion percentage of voting interests acquired						100.00%
AHFCU [Member]
Accounting Policies [Line Items]
Purchase and assumption agreement date			Mar. 31, 2025
Loans acquired			$ 105,000
Business combination, fixed assets			2,100
Deposits Assumed			87,100
Deposit premium paid			6,200
Core deposit intangibles			1,300
Unamortized loan discounts			6,700
Transaction costs, net			$ 8,700
Percentage of deposits assumed at closing			7.00%