Fair Value - Carrying amounts and estimated fair value of financial instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Carrying amount and estimated fair value of financial instruments
Cash and due from banks	$ 328,222	$ 682,807
Federal funds sold	8,223	308
Securities available-for-sale	1,331,985	1,364,734
Restricted stock	15,372	16,200
Loans, net	2,591,866	2,682,257
Accrued interest receivable	19,128	16,946
Deposits	(4,389,442)	(4,418,117)
Short-term borrowings	(89,321)	(93,374)
Other Borrowings	(8,827)	(16,483)
Accrued interest payable	(479)	(687)
Level 2
Carrying amount and estimated fair value of financial instruments
Securities available-for-sale	1,324,851	1,357,737
Level 3
Carrying amount and estimated fair value of financial instruments
Securities available-for-sale	7,134	6,997
Carrying Value
Carrying amount and estimated fair value of financial instruments
Cash and due from banks	328,222	682,807
Federal funds sold	8,223	308
Securities available-for-sale	1,331,985	1,364,734
Restricted stock	15,372	16,200
Loans, net	2,930,980	2,767,590
Accrued interest receivable	19,128	16,946
Deposits	(4,407,506)	(4,409,569)
Short-term borrowings	(89,321)	(93,374)
Other Borrowings	(9,593)	(15,937)
Accrued interest payable	(479)	(687)
Fair Value. \| Level 1
Carrying amount and estimated fair value of financial instruments
Cash and due from banks	29,207	24,901
Fair Value. \| Level 2
Carrying amount and estimated fair value of financial instruments
Cash and due from banks	299,015	657,906
Federal funds sold	8,223	308
Securities available-for-sale	1,324,851	1,357,737
Accrued interest receivable	6,785	4,709
Deposits	(4,389,442)	(4,418,117)
Short-term borrowings	(89,321)	(93,374)
Other Borrowings	(8,827)	(16,483)
Accrued interest payable	(479)	(687)
Fair Value. \| Level 3
Carrying amount and estimated fair value of financial instruments
Securities available-for-sale	7,134	6,997
Loans, net	2,591,866	2,682,257
Accrued interest receivable	$ 12,343	$ 12,237

Fair value portion of other borrowings at at the end of the reporting period.

No definition available.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

No definition available.

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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

Fair value portion of federal funds sold and securities borrowed or purchased under agreements to resell.

+ References

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- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(5))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Subparagraph (SX 210.7-03.15(a))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

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- Definition

Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 954
-SubTopic 210
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=120413173&loc=SL6242262-115580

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 954
-SubTopic 210
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120413209&loc=SL6242269-115581

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

+ References

No definition available.

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