Non Purchased Loans - Impact of Modifications Classified as Restructured Loans (Details) - Non-Purchased $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan	Dec. 31, 2018 USD ($) loan
Restructured loans
Number of Loans \| loan	38	7	11
Pre-Modification Outstanding Recorded Investment	$ 9,040	$ 647	$ 1,858
Post-Modification Outstanding Recorded Investment	$ 9,115	$ 644	$ 1,852
Commercial, financial, agricultural
Restructured loans
Number of Loans \| loan	7	2
Pre-Modification Outstanding Recorded Investment	$ 1,862	$ 187
Post-Modification Outstanding Recorded Investment	$ 1,859	$ 185
Real estate – 1-4 family mortgage
Restructured loans
Number of Loans \| loan	23	5	9
Pre-Modification Outstanding Recorded Investment	$ 3,736	$ 460	$ 1,764
Post-Modification Outstanding Recorded Investment	$ 3,866	$ 459	$ 1,763
Real estate – 1-4 family mortgage \| Primary
Restructured loans
Number of Loans \| loan	20
Pre-Modification Outstanding Recorded Investment	$ 3,594
Post-Modification Outstanding Recorded Investment	$ 3,659
Real estate – 1-4 family mortgage \| Rental / Investment
Restructured loans
Number of Loans \| loan	3
Pre-Modification Outstanding Recorded Investment	$ 142
Post-Modification Outstanding Recorded Investment	$ 207
Real estate - commercial mortgage
Restructured loans
Number of Loans \| loan	6		2
Pre-Modification Outstanding Recorded Investment	$ 3,418		$ 94
Post-Modification Outstanding Recorded Investment	$ 3,369		$ 89
Real estate - commercial mortgage \| Owner Occupied
Restructured loans
Number of Loans \| loan	3
Pre-Modification Outstanding Recorded Investment	$ 3,019
Post-Modification Outstanding Recorded Investment	$ 2,970
Real estate - commercial mortgage \| Non-owner Occupied
Restructured loans
Number of Loans \| loan	2
Pre-Modification Outstanding Recorded Investment	$ 210
Post-Modification Outstanding Recorded Investment	$ 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=121611835&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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