Fair value adjustment of long term borrowings.

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Financing receivable loans acquired.

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Merger completion date.

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Number of facility leases.

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Number of locations.

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Percentage of common shares outstanding post merger.

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Percentage of loan acquired from partner.

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Number of shares of equity interests issued or issuable to acquire entity.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the best estimate at the acquisition date of the contractual cash flows not expected to be collected, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

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Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

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For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of increase in allowance for credit loss on financing receivable purchased with credit deterioration.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Merger and Acquisition - Additional Information (Detail) $ / shares in Units, shares in Millions		3 Months Ended	9 Months Ended
	Nov. 30, 2023 USD ($) Facility Location $ / shares shares	Jun. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Business Acquisition [Line Items]
Allowance for Credit Losses on Acquired Loans			$ 2,300,000
Goodwill			58,806,000	$ 56,968,000
Allowance for credit losses		$ 26,289,000	$ 26,542,000	$ 23,767,000	$ 9,964,000	$ 10,228,000	$ 4,666,000
Partners Bancorp [Member]
Business Acquisition [Line Items]
Merger completion date	Nov. 30, 2023
Business acquisition,share price \| $ / shares	$ 1.15
Number of shares of common stock issued \| shares	20.7
Percentage of outstanding common shares post-merger	55.40%
Total fair value consideration	$ 135,779,000
Allowance for Credit Losses on Acquired Loans		2,300,000
Goodwill	22,964,000	$ 1,838,000
Fair value of discount amortized over estimated life of investments	921,000
Loans acquired from Partners	1,300,000,000
Fair value of acquistion loan	$ 5,900,000
Number of facility leases \| Facility	11
Number of locations \| Location	13
Fair value adjustment of long term borrowings	$ 0
Partners Bancorp [Member] \| PCD Loan [Member]
Business Acquisition [Line Items]
Goodwill	$ 2,300,000
Acquired percentage of loans	34.00%
Loans acquired from Partners	$ 435,700,000
Contractual amounts receivable gross	435,700,000
Estimated contractual amounts uncollectible	2,458,000
Fair value of acquistion loan	406,400,000
Partners Bancorp [Member] \| Non PCD Loans [Member]
Business Acquisition [Line Items]
Allowance for credit losses	9,700,000
Partners Bancorp [Member] \| Common Stock [Member]
Business Acquisition [Line Items]
Fair value of common stock issued	133,800,000
Partners Bancorp [Member] \| Restricted Stock [Member]
Business Acquisition [Line Items]
Fair value of common stock issued	$ 2,000,000