Non Purchased Loans - Impact of Modifications Classified as Restructured Loans (Details) - Non purchased loans and leases $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021 USD ($) loan	Sep. 30, 2020 USD ($) loan	Sep. 30, 2021 USD ($) loan	Sep. 30, 2020 USD ($) loan
Restructured loans
Number of Loans \| loan	12	8	31	34
Pre- Modification Outstanding Recorded Investment	$ 1,548	$ 832	$ 9,416	$ 7,802
Post- Modification Outstanding Recorded Investment	$ 1,568	$ 830	$ 9,418	$ 7,754
Commercial, financial, agricultural
Restructured loans
Number of Loans \| loan	1	1	7	7
Pre- Modification Outstanding Recorded Investment	$ 30	$ 31	$ 5,258	$ 1,862
Post- Modification Outstanding Recorded Investment	$ 30	$ 31	$ 5,258	$ 1,859
Real estate – 1-4 family mortgage:
Restructured loans
Number of Loans \| loan		3		19
Pre- Modification Outstanding Recorded Investment		$ 234		$ 2,498
Post- Modification Outstanding Recorded Investment		$ 232		$ 2,505
Real estate – 1-4 family mortgage: \| Primary
Restructured loans
Number of Loans \| loan	11	2	23	17
Pre- Modification Outstanding Recorded Investment	$ 1,518	$ 201	$ 3,321	$ 2,356
Post- Modification Outstanding Recorded Investment	$ 1,538	$ 200	$ 3,350	$ 2,363
Real estate – 1-4 family mortgage: \| Rental/investment
Restructured loans
Number of Loans \| loan		1		2
Pre- Modification Outstanding Recorded Investment		$ 33		$ 142
Post- Modification Outstanding Recorded Investment		$ 32		$ 142
Real estate – commercial mortgage:
Restructured loans
Number of Loans \| loan		4		6
Pre- Modification Outstanding Recorded Investment		$ 567		$ 3,418
Post- Modification Outstanding Recorded Investment		$ 567		$ 3,369
Real estate – commercial mortgage: \| Owner-occupied
Restructured loans
Number of Loans \| loan		2		3
Pre- Modification Outstanding Recorded Investment		$ 357		$ 3,019
Post- Modification Outstanding Recorded Investment		$ 357		$ 2,970
Real estate – commercial mortgage: \| Non-owner occupied
Restructured loans
Number of Loans \| loan		2	1	2
Pre- Modification Outstanding Recorded Investment		$ 210	$ 837	$ 210
Post- Modification Outstanding Recorded Investment		$ 210	$ 810	$ 210
Real estate – commercial mortgage: \| Land development
Restructured loans
Number of Loans \| loan				1
Pre- Modification Outstanding Recorded Investment				$ 189
Post- Modification Outstanding Recorded Investment				$ 189
Installment loans to individuals
Restructured loans
Number of Loans \| loan				2
Pre- Modification Outstanding Recorded Investment				$ 24
Post- Modification Outstanding Recorded Investment				$ 21

Troubled Debt Restructuring Financing Receivable Modifications [Abstract]

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

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Amount, before troubled debt restructuring, of financing receivable to be modified.

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