Federal Home Loan Bank Advances - Summary of Federal Home Loan Bank Advances (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Federal Home Loan Bank, Advances [Line Items]
FHLB Advances, total	$ 74,520	$ 71,007
Open line of credit [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate		5.72%
FHLB Advances, total		$ 8,000
Fixed rate, fixed term advance, maturing July 2027 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	2.90%	2.90%
FHLB Advances, total	$ 5,000	$ 5,000
Putable advance, maturing January 2028, first option date January 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate		3.44%
FHLB Advances, total		$ 5,000
Putable advance, maturing February 2028, first option date February 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate		3.63%
FHLB Advances, total		$ 5,000
Putable advance, maturing March 2028, first option date March 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate		3.47%
FHLB Advances, total		$ 5,000
Putable advance, maturing May 2026, first option date May 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate		3.92%
FHLB Advances, total		$ 2,500
Putable advance, maturing May 2028, first option date May 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate		3.51%
FHLB Advances, total		$ 2,500
3.32% Putable advance, maturing January 2029, first option date July 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	3.32%
FHLB Advances, total	$ 5,000
3.67% Putable advance, maturing January 2029, first option date July 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	3.67%
FHLB Advances, total	$ 5,000
3.79% Putable advance, maturing March 2029, first option date September 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	3.79%
FHLB Advances, total	$ 2,500
3.52% Putable advance, maturing March 2029, first option date September 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	3.52%
FHLB Advances, total	$ 5,000
3.70% Putable advance, maturing January 2029, first option date January 2025 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	3.70%
FHLB Advances, total	$ 5,000
3.78% Putable advance, maturing February 2029, first option date February 2025 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	3.78%
FHLB Advances, total	$ 5,000
3.85% Putable advance, maturing February 2029, first option date February 2026 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	3.85%
FHLB Advances, total	$ 5,000
0.89% Putable advance, maturing March 2030, first put option date March 2025 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	0.89%	0.89%
FHLB Advances, total	$ 10,000	$ 10,000
1.74% Putable advance, maturing March 2032, first put option date March 2027 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	1.74%	1.74%
FHLB Advances, total	$ 10,000	$ 10,000
Advance structured note, payments due monthly, maturing April 2030 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	1.05%	1.05%
FHLB Advances, total	$ 5,960	$ 6,454
Advance structured note, payments due monthly, maturing May 2030 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	1.19%	1.19%
FHLB Advances, total	$ 6,060	$ 6,553
SOFR Floater advance, maturing October 2024 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, interest rate	5.63%	5.68%
FHLB Advances, total	$ 5,000	$ 5,000