Loans - Past Due Status (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Loans on nonaccrual status
Total Past Due	$ 8,258,000	$ 16,299,000
Current	1,312,901,000	1,098,187,000
Total Loans	1,328,990,000	1,115,191,000
90+ days past due and accruing	291,000	109,000
Additional disclosure for nonaccrual loans
Current, nonaccrual status	649,000	547,000
Nonaccrual loans, 30-59 days past due		197,000
Nonaccrual loans, 60-89 days past due	19,000	10,000
Nonaccrual loans, 90+ days past due	1,040,000.00	1,740,000
Nonaccrual loans, PCI	427,000
PCI
Loans on nonaccrual status
PCI	7,831,000	705,000
30-59 Days Past Due
Loans on nonaccrual status
Total Past Due	5,912,000	12,784,000
60-89 Days Past Due
Loans on nonaccrual status
Total Past Due	1,047,000	1,665,000
90+ Days Past Due
Loans on nonaccrual status
Total Past Due	1,299,000	1,850,000
Real estate - residential mortgage
Loans on nonaccrual status
Total Past Due	1,702,000	2,605,000
Current	201,495,000	178,583,000
Total Loans	205,011,000	181,295,000
90+ days past due and accruing	291,000
Real estate - residential mortgage | PCI
Loans on nonaccrual status
PCI	1,814,000	107,000
Real estate - residential mortgage | 30-59 Days Past Due
Loans on nonaccrual status
Total Past Due	537,000	1,428,000
Real estate - residential mortgage | 60-89 Days Past Due
Loans on nonaccrual status
Total Past Due	285,000	161,000
Real estate - residential mortgage | 90+ Days Past Due
Loans on nonaccrual status
Total Past Due	880,000	1,016,000
Equity lines
Loans on nonaccrual status
Total Past Due	97,000	508,000
Current	52,524,000	51,540,000
Total Loans	52,697,000	52,083,000
90+ days past due and accruing		109,000
Equity lines | PCI
Loans on nonaccrual status
PCI	76,000	35,000
Equity lines | 30-59 Days Past Due
Loans on nonaccrual status
Total Past Due	47,000	229,000
Equity lines | 60-89 Days Past Due
Loans on nonaccrual status
Total Past Due		56,000
Equity lines | 90+ Days Past Due
Loans on nonaccrual status
Total Past Due	50,000	223,000
Consumer
Loans on nonaccrual status
Total Past Due	57,000	30,000
Current	15,176,000	13,726,000
Total Loans	15,722,000	13,756,000
Consumer | PCI
Loans on nonaccrual status
PCI	489,000
Consumer | 30-59 Days Past Due
Loans on nonaccrual status
Total Past Due		20,000
Consumer | 60-89 Days Past Due
Loans on nonaccrual status
Total Past Due	57,000	10,000
Consumer finance
Loans on nonaccrual status
Total Past Due	6,170,000	13,065,000
Current	294,479,000	299,934,000
Total Loans	300,649,000	312,999,000
Consumer finance | 30-59 Days Past Due
Loans on nonaccrual status
Total Past Due	5,096,000	11,034,000
Consumer finance | 60-89 Days Past Due
Loans on nonaccrual status
Total Past Due	705,000	1,420,000
Consumer finance | 90+ Days Past Due
Loans on nonaccrual status
Total Past Due	369,000	611,000
Construction lending | Real estate - construction
Loans on nonaccrual status
Current	56,382,000	40,943,000
Total Loans	56,382,000	40,943,000
Consumer lot lending | Real estate - construction
Loans on nonaccrual status
Current	15,712,000	13,303,000
Total Loans	15,712,000	13,303,000
Commercial real estate lending | Commercial, financial and agricultural
Loans on nonaccrual status
Total Past Due	232,000
Current	415,999,000	325,991,000
Total Loans	421,683,000	326,554,000
Commercial real estate lending | Commercial, financial and agricultural | PCI
Loans on nonaccrual status
PCI	5,452,000	563,000
Commercial real estate lending | Commercial, financial and agricultural | 30-59 Days Past Due
Loans on nonaccrual status
Total Past Due	232,000
Land acquisition and development lending | Commercial, financial and agricultural
Loans on nonaccrual status
Current	38,121,000	42,891,000
Total Loans	38,121,000	42,891,000
Builder line lending | Commercial, financial and agricultural
Loans on nonaccrual status
Current	22,172,000	26,373,000
Total Loans	22,172,000	26,373,000
Commercial business lending | Commercial, financial and agricultural
Loans on nonaccrual status
Total Past Due		91,000
Current	200,841,000	104,903,000
Total Loans	$ 200,841,000	104,994,000
Commercial business lending | Commercial, financial and agricultural | 30-59 Days Past Due
Loans on nonaccrual status
Total Past Due		73,000
Commercial business lending | Commercial, financial and agricultural | 60-89 Days Past Due
Loans on nonaccrual status
Total Past Due		$ 18,000