Non Purchased Loans - Aging of Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 10,608,904	$ 10,024,981
Unearned income	(5,160)	(4,067)
Loans, net of unearned income	10,603,744	10,020,914	$ 10,149,242
Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,497,272	1,423,270
Loans, net of unearned income	1,497,272		1,634,633
Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	106,510	80,192
Loans, net of unearned income	101,350		74,003
Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,126,363	1,104,896
Loans, net of unearned income	1,126,363		1,051,359
Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,030,083	2,724,246
Loans, net of unearned income	3,030,083		2,702,091
Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,717,513	4,549,037
Loans, net of unearned income	4,717,513		4,530,169
Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	131,163	143,340
Loans, net of unearned income	131,163		$ 156,987
Residential | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	320,541	302,275
Commercial | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	805,822	802,621
Primary | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,085,078	1,816,120
Home equity | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	488,048	474,604
Rental/investment | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	297,536	288,474
Owner-occupied | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,533,192	1,563,351
Non-owner occupied | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,057,526	2,856,947
Non purchased loans and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	9,697,276	9,015,078
Unearned income	(5,160)	(4,067)
Loans, net of unearned income	9,692,116	9,011,011
Non purchased loans and leases | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,405,642	1,332,962
Non purchased loans and leases | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	106,510	80,192
Non purchased loans and leases | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,121,117	1,099,902
Non purchased loans and leases | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,849,675	2,508,473
Non purchased loans and leases | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,110,671	3,885,984
Non purchased loans and leases | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	103,661	107,565
Non purchased loans and leases | Accruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income	(5,160)	(4,067)
Loans, net of unearned income	9,659,832	8,980,260
Non purchased loans and leases | Accruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,403,682	1,327,202
Non purchased loans and leases | Accruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	106,510	80,181
Non purchased loans and leases | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,121,117	1,099,902
Non purchased loans and leases | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,829,504	2,492,289
Non purchased loans and leases | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,100,756	3,877,445
Non purchased loans and leases | Accruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	103,423	107,308
Non purchased loans and leases | Nonaccruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income		0
Loans, net of unearned income	32,284	30,751
Non purchased loans and leases | Nonaccruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,960	5,760
Non purchased loans and leases | Nonaccruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	11
Non purchased loans and leases | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	20,171	16,184
Non purchased loans and leases | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	9,915	8,539
Non purchased loans and leases | Nonaccruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	238	257
Non purchased loans and leases | 30-89 Days Past Due | Accruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	13,549	23,921
Non purchased loans and leases | 30-89 Days Past Due | Accruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	879	3,325
Non purchased loans and leases | 30-89 Days Past Due | Accruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | 30-89 Days Past Due | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	152	1,077
Non purchased loans and leases | 30-89 Days Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	7,715	17,085
Non purchased loans and leases | 30-89 Days Past Due | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,146	1,456
Non purchased loans and leases | 30-89 Days Past Due | Accruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	657	978
Non purchased loans and leases | 30-89 Days Past Due | Nonaccruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	2,996	3,964
Non purchased loans and leases | 30-89 Days Past Due | Nonaccruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	1,669
Non purchased loans and leases | 30-89 Days Past Due | Nonaccruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | 30-89 Days Past Due | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | 30-89 Days Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,971	2,102
Non purchased loans and leases | 30-89 Days Past Due | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	163
Non purchased loans and leases | 30-89 Days Past Due | Nonaccruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	25	30
Non purchased loans and leases | 90 Days or More Past Due | Accruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	479	1,074
Non purchased loans and leases | 90 Days or More Past Due | Accruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	165	103
Non purchased loans and leases | 90 Days or More Past Due | Accruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | 90 Days or More Past Due | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | 90 Days or More Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	314	834
Non purchased loans and leases | 90 Days or More Past Due | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	125
Non purchased loans and leases | 90 Days or More Past Due | Accruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	12
Non purchased loans and leases | 90 Days or More Past Due | Nonaccruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	16,591	13,462
Non purchased loans and leases | 90 Days or More Past Due | Nonaccruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,863	2,665
Non purchased loans and leases | 90 Days or More Past Due | Nonaccruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	11
Non purchased loans and leases | 90 Days or More Past Due | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | 90 Days or More Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	10,762	9,577
Non purchased loans and leases | 90 Days or More Past Due | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,937	1,114
Non purchased loans and leases | 90 Days or More Past Due | Nonaccruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	29	95
Non purchased loans and leases | Current Loans | Accruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income	(5,160)	(4,067)
Loans, net of unearned income	9,645,804	8,955,265
Non purchased loans and leases | Current Loans | Accruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,402,638	1,323,774
Non purchased loans and leases | Current Loans | Accruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	106,510	80,181
Non purchased loans and leases | Current Loans | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,120,965	1,098,825
Non purchased loans and leases | Current Loans | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,821,475	2,474,370
Non purchased loans and leases | Current Loans | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,096,610	3,875,864
Non purchased loans and leases | Current Loans | Accruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	102,766	106,318
Non purchased loans and leases | Current Loans | Nonaccruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	12,697	13,325
Non purchased loans and leases | Current Loans | Nonaccruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	97	1,426
Non purchased loans and leases | Current Loans | Nonaccruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Current Loans | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Current Loans | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	6,438	4,505
Non purchased loans and leases | Current Loans | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	5,978	7,262
Non purchased loans and leases | Current Loans | Nonaccruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	184	132
Non purchased loans and leases | Residential | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	319,287	300,988
Non purchased loans and leases | Residential | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	319,287	300,988
Non purchased loans and leases | Residential | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Residential | 30-89 Days Past Due | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	152	1,077
Non purchased loans and leases | Residential | 30-89 Days Past Due | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Residential | 90 Days or More Past Due | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Residential | 90 Days or More Past Due | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Residential | Current Loans | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	319,135	299,911
Non purchased loans and leases | Residential | Current Loans | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Commercial | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	801,830	798,914
Non purchased loans and leases | Commercial | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	801,830	798,914
Non purchased loans and leases | Commercial | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Commercial | 30-89 Days Past Due | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Commercial | 30-89 Days Past Due | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Commercial | 90 Days or More Past Due | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Commercial | 90 Days or More Past Due | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Commercial | Current Loans | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	801,830	798,914
Non purchased loans and leases | Commercial | Current Loans | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Primary | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,976,535	1,682,050
Non purchased loans and leases | Primary | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,958,999	1,668,114
Non purchased loans and leases | Primary | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	17,536	13,936
Non purchased loans and leases | Primary | 30-89 Days Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,095	14,785
Non purchased loans and leases | Primary | 30-89 Days Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,743	1,920
Non purchased loans and leases | Primary | 90 Days or More Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	389
Non purchased loans and leases | Primary | 90 Days or More Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	9,263	8,195
Non purchased loans and leases | Primary | Current Loans | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,954,904	1,652,940
Non purchased loans and leases | Primary | Current Loans | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	5,530	3,821
Non purchased loans and leases | Home equity | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	443,045	423,108
Non purchased loans and leases | Home equity | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	441,674	422,163
Non purchased loans and leases | Home equity | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,371	945
Non purchased loans and leases | Home equity | 30-89 Days Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,166	1,468
Non purchased loans and leases | Home equity | 30-89 Days Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	99	182
Non purchased loans and leases | Home equity | 90 Days or More Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Home equity | 90 Days or More Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	674	546
Non purchased loans and leases | Home equity | Current Loans | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	440,508	420,695
Non purchased loans and leases | Home equity | Current Loans | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	598	217
Non purchased loans and leases | Rental/investment | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	279,621	268,245
Non purchased loans and leases | Rental/investment | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	278,955	267,199
Non purchased loans and leases | Rental/investment | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	666	1,046
Non purchased loans and leases | Rental/investment | 30-89 Days Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,264	401
Non purchased loans and leases | Rental/investment | 30-89 Days Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	129	0
Non purchased loans and leases | Rental/investment | 90 Days or More Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	314	445
Non purchased loans and leases | Rental/investment | 90 Days or More Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	409	771
Non purchased loans and leases | Rental/investment | Current Loans | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	277,377	266,353
Non purchased loans and leases | Rental/investment | Current Loans | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	128	275
Non purchased loans and leases | Land development | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	150,474	135,070
Non purchased loans and leases | Land development | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	112,887	110,395
Non purchased loans and leases | Land development | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	149,876	134,813
Non purchased loans and leases | Land development | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	112,808	110,051
Non purchased loans and leases | Land development | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	598	257
Non purchased loans and leases | Land development | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	79	344
Non purchased loans and leases | Land development | 30-89 Days Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,190	431
Non purchased loans and leases | Land development | 30-89 Days Past Due | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	397	476
Non purchased loans and leases | Land development | 30-89 Days Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Land development | 30-89 Days Past Due | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Land development | 90 Days or More Past Due | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Land development | 90 Days or More Past Due | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Land development | 90 Days or More Past Due | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	416	65
Non purchased loans and leases | Land development | 90 Days or More Past Due | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	43	292
Non purchased loans and leases | Land development | Current Loans | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	148,686	134,382
Non purchased loans and leases | Land development | Current Loans | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	112,411	109,575
Non purchased loans and leases | Land development | Current Loans | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	182	192
Non purchased loans and leases | Land development | Current Loans | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	36	52
Non purchased loans and leases | Owner-occupied | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,323,106	1,329,219
Non purchased loans and leases | Owner-occupied | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,318,835	1,326,532
Non purchased loans and leases | Owner-occupied | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,271	2,687
Non purchased loans and leases | Owner-occupied | 30-89 Days Past Due | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,444	720
Non purchased loans and leases | Owner-occupied | 30-89 Days Past Due | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	163
Non purchased loans and leases | Owner-occupied | 90 Days or More Past Due | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	36
Non purchased loans and leases | Owner-occupied | 90 Days or More Past Due | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,894	822
Non purchased loans and leases | Owner-occupied | Current Loans | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,317,391	1,325,776
Non purchased loans and leases | Owner-occupied | Current Loans | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	377	1,702
Non purchased loans and leases | Non-owner occupied | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,674,678	2,446,370
Non purchased loans and leases | Non-owner occupied | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,669,113	2,440,862
Non purchased loans and leases | Non-owner occupied | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	5,565	5,508
Non purchased loans and leases | Non-owner occupied | 30-89 Days Past Due | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,305	260
Non purchased loans and leases | Non-owner occupied | 30-89 Days Past Due | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Non-owner occupied | 90 Days or More Past Due | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	89
Non purchased loans and leases | Non-owner occupied | 90 Days or More Past Due | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	0
Non purchased loans and leases | Non-owner occupied | Current Loans | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,666,808	2,440,513
Non purchased loans and leases | Non-owner occupied | Current Loans | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 5,565	$ 5,508