Investment Securities - Summary of Available-For-Sale Securities and Held to Maturity Securities, Continuous Unrealized Loss Position, Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Investments Debt And Equity Securities [Line Items]
Less than 12 months fair value	$ 39,685	$ 32,528
Less than 12 months unrealized / unrecognized losses	(1,580)	(620)
12 months or longer fair value	4,347	4,732
12 months or longer unrealized / unrecognizedlosses	(360)	(268)
Fair value	44,032	37,260
Unrealized losses	(1,940)	(888)
Less than 12 months fair value of held to maturity	46,878	28,216
Less than 12 months unrealized losses of held to maturity	(6,387)	(170)
12 months or longer fair value of held to maturity	46,781
12 months or longer unrealized losses of held to maturity	(5,626)
Fair value of held to maturity	93,659	28,216
Unrealized losses of held to maturity	(12,013)	(170)
Mortgage backed securities [Member]
Investments Debt And Equity Securities [Line Items]
Less than 12 months fair value	10,920	14,302
Less than 12 months unrealized / unrecognized losses	(537)	(320)
12 months or longer fair value	4,347
12 months or longer unrealized / unrecognizedlosses	(360)
Fair value	15,267	14,302
Unrealized losses	(897,000)	(320)
Less than 12 months fair value of held to maturity	32,271	22,632
Less than 12 months unrealized losses of held to maturity	(5,244)	(140)
12 months or longer fair value of held to maturity	21,445
12 months or longer unrealized losses of held to maturity	(2,403)
Fair value of held to maturity	53,716	22,632
Unrealized losses of held to maturity	(7,647)	(140)
Government agencies [Member]
Investments Debt And Equity Securities [Line Items]
Less than 12 months fair value	28,765	2,993
Less than 12 months unrealized / unrecognized losses	(1,043)	(100)
Fair value	28,765	2,993
Unrealized losses	(1,043)	(100)
Less than 12 months fair value of held to maturity	0
Less than 12 months unrealized losses of held to maturity	0
12 months or longer fair value of held to maturity	2,456
12 months or longer unrealized losses of held to maturity	(627)
Fair value of held to maturity	2,456
Unrealized losses of held to maturity	(627)
Corporate bonds [Member]
Investments Debt And Equity Securities [Line Items]
Less than 12 months fair value		15,233
Less than 12 months unrealized / unrecognized losses		(200)
12 months or longer fair value		4,732
12 months or longer unrealized / unrecognizedlosses		(268)
Fair value		19,965
Unrealized losses		(468)
Less than 12 months fair value of held to maturity	14,607	5,584
Less than 12 months unrealized losses of held to maturity	(1,143)	(30)
12 months or longer fair value of held to maturity	22,880
12 months or longer unrealized losses of held to maturity	(2,596)
Fair value of held to maturity	37,487	5,584
Unrealized losses of held to maturity	$ (3,739)	$ (30)

Investments debt and equity securities.

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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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