Securities - Additional Information (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Available for sale securities transferred to held-to-maturity securities at fair value	$ 366,886,000	$ 0	$ 0
Net unrealized gains before tax	2,748,000
After tax gains in AOCI	2,048,000
Net Proceeds	176,455,000	44,906,000	$ 212,485,000
Gain (loss) recognized for transfer of Available for sale securities	0
Amortized Cost	416,389,000	0
Impairment of the securities	$ 0	0
Amortized cost of rated agencies' percentage	99.90%
Secure government, public and trust deposits
Debt Securities, Available-for-sale [Line Items]
Debt securities, AFS, restricted	$ 607,681,000	582,338,000
Municipal Securities
Debt Securities, Available-for-sale [Line Items]
Available for sale securities transferred to held-to-maturity securities at fair value	366,886,000
Short-term borrowings
Debt Securities, Available-for-sale [Line Items]
Debt securities, AFS, restricted	$ 21,493,000	$ 32,272,000

AOCI, Debt Securities, Available-for-sale with Allowance for Credit Loss, Cumulative Gain (Loss), before Tax

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- Definition

Debt Securities, Available-for-sale, Transfer, Realized Gain (Loss)

+ References

No definition available.

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- Definition

Debt Securities Available for Sale Transferred to Debt Securities, Held to Maturity in Period

+ References

No definition available.

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- Definition

Debt Securities, Held To maturity, In Amortized Cost Of Rated Agencies' Percentage

+ References

No definition available.

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- Definition

Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) with allowance for credit loss.

+ References

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- Definition

Amount of unrealized gain (loss) recognized in earnings from transfer of investment in debt security measured at fair value with change in fair value recognized in other comprehensive (available-for-sale) to investment in debt security measured at fair value with change in fair value recognized in net income (trading). Excludes other-than-temporary impairment (OTTI) previously recognized in other comprehensive income (OCI).

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Amount of restricted 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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- Definition

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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- Definition

Amount of cash inflow from sale 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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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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