Equity and Regulatory Matters - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2022	Aug. 26, 2022	Jul. 29, 2022
Text Block [Abstract]
Consolidated assets	$ 3,000,000	$ 3,000,000	$ 3,000,000
Percentage of repurchase of outstanding shares				5.00%	5.00%
Shares authorized to repurchase				319,766
Shares repurchased	184,270	184,270	184,270
Purchase price of repurchased shares	$ 2,000	$ (1,995)	$ (1,995)

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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