CONSOLIDATED STATEMENTS OF CONDITION (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Available-for-sale securities, at amortized cost	$ 1,688,051	$ 1,831,791
Securities - held-to-maturity	262,444	261,692
Equity securities, at amortized cost	$ 778	$ 777
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, authorized (in shares)	25,000,000	25,000,000
Common stock, issued (in shares)	14,441,413	14,555,741
Treasury stock, shares (in shares)	124,265	128,749

Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Amortized cost excluding accrued interest, before allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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