Non Purchased Loans - Impact of Modifications Classified as Restructured Loans (Details) - Non purchased loans and leases $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021 USD ($) loan	Jun. 30, 2020 USD ($) loan	Jun. 30, 2021 USD ($) loan	Jun. 30, 2020 USD ($) loan
Restructured loans
Number of Loans \| loan	15	21	19	26
Pre- Modification Outstanding Recorded Investment	$ 6,599	$ 5,627	$ 7,868	$ 6,971
Post- Modification Outstanding Recorded Investment	$ 6,605	$ 5,577	$ 7,850	$ 6,924
Commercial, financial, agricultural
Restructured loans
Number of Loans \| loan	6	4	6	6
Pre- Modification Outstanding Recorded Investment	$ 5,228	$ 933	$ 5,228	$ 1,831
Post- Modification Outstanding Recorded Investment	$ 5,228	$ 930	$ 5,228	$ 1,828
Real estate – 1-4 family mortgage:
Restructured loans
Number of Loans \| loan		13		16
Pre- Modification Outstanding Recorded Investment		$ 1,818		$ 2,264
Post- Modification Outstanding Recorded Investment		$ 1,824		$ 2,273
Real estate – 1-4 family mortgage: \| Primary
Restructured loans
Number of Loans \| loan	9	12	12	15
Pre- Modification Outstanding Recorded Investment	$ 1,371	$ 1,709	$ 1,803	$ 2,155
Post- Modification Outstanding Recorded Investment	$ 1,377	$ 1,714	$ 1,812	$ 2,163
Real estate – 1-4 family mortgage: \| Rental/investment
Restructured loans
Number of Loans \| loan		1		1
Pre- Modification Outstanding Recorded Investment		$ 109		$ 109
Post- Modification Outstanding Recorded Investment		$ 110		$ 110
Real estate – commercial mortgage:
Restructured loans
Number of Loans \| loan		2		2
Pre- Modification Outstanding Recorded Investment		$ 2,852		$ 2,852
Post- Modification Outstanding Recorded Investment		$ 2,802		$ 2,802
Real estate – commercial mortgage: \| Owner-occupied
Restructured loans
Number of Loans \| loan		1		1
Pre- Modification Outstanding Recorded Investment		$ 2,663		$ 2,663
Post- Modification Outstanding Recorded Investment		$ 2,613		$ 2,613
Real estate – commercial mortgage: \| Non-owner occupied
Restructured loans
Number of Loans \| loan		1	1	1
Pre- Modification Outstanding Recorded Investment		$ 189	$ 837	$ 189
Post- Modification Outstanding Recorded Investment		$ 189	$ 810	$ 189
Installment loans to individuals
Restructured loans
Number of Loans \| loan		2		2
Pre- Modification Outstanding Recorded Investment		$ 24		$ 24
Post- Modification Outstanding Recorded Investment		$ 21		$ 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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- Definition

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

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