Investment Securities - Summary of Fair Value of Available For Sale Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Debt Securities Available For Sale Unrealized Loss Position Fair Value [Line Items]
Less than 12 Months Fair Value	$ 87,462	$ 24,488
Less than 12 Months Unrealized Losses	(460)	(55)
More than 12 Months Fair Value	58,461	66,250
More than 12 Months Unrealized Losses	(8,259)	(8,010)
Fair Value	145,923	90,738
Unrealized Losses	(8,719)	(8,065)
Mortgage-backed securities - U.S. Government Sponsored Enterprises (GSEs) [Member]
Debt Securities Available For Sale Unrealized Loss Position Fair Value [Line Items]
Less than 12 Months Fair Value	72,023	22,206
Less than 12 Months Unrealized Losses	(358)	(52)
More than 12 Months Fair Value	27,828	29,492
More than 12 Months Unrealized Losses	(5,150)	(5,029)
Fair Value	99,851	51,698
Unrealized Losses	(5,508)	(5,081)
U.S. government agency securities [Member]
Debt Securities Available For Sale Unrealized Loss Position Fair Value [Line Items]
Less than 12 Months Fair Value	4,956	0
Less than 12 Months Unrealized Losses	(44)	0
More than 12 Months Fair Value	5,472	5,510
More than 12 Months Unrealized Losses	(788)	(750)
Fair Value	10,428	5,510
Unrealized Losses	(832)	(750)
Obligations of state and political subdivisions [Member]
Debt Securities Available For Sale Unrealized Loss Position Fair Value [Line Items]
Less than 12 Months Fair Value	8,322	1,901
Less than 12 Months Unrealized Losses	(56)	(3)
More than 12 Months Fair Value	25,062	31,025
More than 12 Months Unrealized Losses	(2,320)	(2,230)
Fair Value	33,384	32,926
Unrealized Losses	(2,376)	(2,233)
Small business association (SBA) securities [Member]
Debt Securities Available For Sale Unrealized Loss Position Fair Value [Line Items]
Less than 12 Months Fair Value	187	381
Less than 12 Months Unrealized Losses	(1)	0
More than 12 Months Fair Value	99	223
More than 12 Months Unrealized Losses	(1)	(1)
Fair Value	286	604
Unrealized Losses	(2)	$ (1)
U.S. Treasuries [Member]
Debt Securities Available For Sale Unrealized Loss Position Fair Value [Line Items]
Less than 12 Months Fair Value	1,974
Less than 12 Months Unrealized Losses	(1)
More than 12 Months Fair Value	0
More than 12 Months Unrealized Losses	0
Fair Value	1,974
Unrealized Losses	$ (1)

Debt securities available for sale unrealized loss position fair value.

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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