Loans - Loans Acquired (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Loans
Outstanding principal balance	$ 135,562	$ 34,101
Carrying amount
Total acquired loans	122,379	27,127
Real estate - residential mortgage
Carrying amount
Total acquired loans	24,262	7,142
Real estate - construction
Carrying amount
Total acquired loans	3,762
Commercial, financial and agricultural
Carrying amount
Total acquired loans	79,706	11,901
Equity lines
Carrying amount
Total acquired loans	11,844	8,081
Consumer
Carrying amount
Total acquired loans	2,805	3
PCI Loans
Loans
Outstanding principal balance	18,591	6,262
Carrying amount
Total acquired loans	7,831	705
PCI Loans | Real estate - residential mortgage
Carrying amount
Total acquired loans	1,814	107
PCI Loans | Commercial, financial and agricultural
Carrying amount
Total acquired loans	5,452	563
PCI Loans | Equity lines
Carrying amount
Total acquired loans	77	35
PCI Loans | Consumer
Carrying amount
Total acquired loans	488
Purchased Performing Loans
Loans
Outstanding principal balance	116,971	27,839
Carrying amount
Total acquired loans	114,548	26,422
Purchased Performing Loans | Real estate - residential mortgage
Carrying amount
Total acquired loans	22,448	7,035
Purchased Performing Loans | Real estate - construction
Carrying amount
Total acquired loans	3,762
Purchased Performing Loans | Commercial, financial and agricultural
Carrying amount
Total acquired loans	74,254	11,338
Purchased Performing Loans | Equity lines
Carrying amount
Total acquired loans	11,767	8,046
Purchased Performing Loans | Consumer
Carrying amount
Total acquired loans	$ 2,317	$ 3