Non Purchased Loans - Aging of Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 10,153,267	$ 10,937,807
Unearned income	(4,025)	(4,160)
Loans, net of unearned income	10,149,242	10,933,647	$ 10,997,304
Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,634,633	2,536,984
Loans, net of unearned income	1,634,633		2,641,598
Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	78,028	80,022
Loans, net of unearned income	74,003		80,779
Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,051,359	858,104
Loans, net of unearned income	1,051,359		791,108
Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,702,091	2,698,308
Loans, net of unearned income	2,702,091		2,788,513
Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,530,169	4,554,852
Loans, net of unearned income	4,530,169		4,410,753
Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	156,987	209,537
Loans, net of unearned income	156,987		$ 284,553
Residential | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	277,163	246,673
Commercial | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	774,196	611,431
Primary | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,790,522	1,750,951
Home equity | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	489,933	513,160
Rental/investment | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	297,341	296,364
Owner-occupied | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,663,191	1,657,806
Non-owner occupied | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,742,029	2,747,467
Non purchased loans and leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	8,896,569	9,423,700
Unearned income	(4,025)	(4,160)
Loans, net of unearned income	8,892,544	9,419,540
Non purchased loans and leases | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,509,908	2,360,471
Non purchased loans and leases | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	78,028	80,022
Non purchased loans and leases | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,038,613	827,152
Non purchased loans and leases | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,435,574	2,356,564
Non purchased loans and leases | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,723,309	3,649,629
Non purchased loans and leases | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	111,137	149,862
Non purchased loans and leases | Accruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income	(4,025)	(4,160)
Loans, net of unearned income	8,865,443	9,399,171
Non purchased loans and leases | Accruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,504,992	2,356,071
Non purchased loans and leases | Accruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	78,028	79,974
Non purchased loans and leases | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,038,613	826,655
Non purchased loans and leases | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,423,997	2,346,658
Non purchased loans and leases | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,713,030	3,644,266
Non purchased loans and leases | Accruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	110,808	149,707
Non purchased loans and leases | Nonaccruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income		0
Loans, net of unearned income	27,101	20,369
Non purchased loans and leases | Nonaccruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	4,916	4,400
Non purchased loans and leases | Nonaccruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	48
Non purchased loans and leases | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	497
Non purchased loans and leases | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	11,577	9,906
Non purchased loans and leases | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	10,279	5,363
Non purchased loans and leases | Nonaccruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	329	155
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	11,293	17,635
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	2,909	1,124
Non purchased loans and leases | 30-89 Days Past Due | Accruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	20	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	0	0
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	5,082	13,801
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	2,513	1,814
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	769	896
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	1,941	2,204
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	10	164
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	1,444	1,992
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	477	44
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	10	4
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	800	3,783
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	113	231
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	643	2,324
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	44	1,037
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	191
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	8,745	10,339
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	1,512	1,804
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	48
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	497
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	4,198	3,049
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	2,867	4,824
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	168	117
Non purchased loans and leases | Current Loans | Accruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unearned income	(4,025)	(4,160)
Loans, net of unearned income	8,853,350	9,377,753
Non purchased loans and leases | Current Loans | Accruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,501,970	2,354,716
Non purchased loans and leases | Current Loans | Accruing Loans | Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	78,008	79,974
Non purchased loans and leases | Current Loans | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,038,613	826,655
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	2,418,272	2,330,533
Non purchased loans and leases | Current Loans | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,710,473	3,641,415
Non purchased loans and leases | Current Loans | Accruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	110,039	148,620
Non purchased loans and leases | Current Loans | Nonaccruing Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	16,415	7,826
Non purchased loans and leases | Current Loans | Nonaccruing Loans | Commercial, financial, agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,394	2,432
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	5,935	4,865
Non purchased loans and leases | Current Loans | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	6,935	495
Non purchased loans and leases | Current Loans | Nonaccruing Loans | Installment loans to individuals
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	151	34
Non purchased loans and leases | Residential | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	274,599	243,814
Non purchased loans and leases | Residential | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	274,599	243,317
Non purchased loans and leases | Residential | Nonaccruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	0	497
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	0	0
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	497
Non purchased loans and leases | Residential | Current Loans | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	274,599	243,317
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	764,014	583,338
Non purchased loans and leases | Commercial | Accruing Loans | Real estate – construction:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	764,014	583,338
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	764,014	583,338
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	1,623,987	1,536,181
Non purchased loans and leases | Primary | Accruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,613,850	1,527,359
Non purchased loans and leases | Primary | Nonaccruing Loans | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	10,137	8,822
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	3,345	11,889
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	1,414	1,865
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	505	1,754
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	3,545	2,744
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	1,610,000	1,513,716
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	5,178	4,213
Non purchased loans and leases | Home equity | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	426,845	432,768
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	426,200	432,214
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	645	554
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	975	1,152
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	30	66
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	360
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	446	111
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	425,225	430,702
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	169	377
Non purchased loans and leases | Rental/investment | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	271,397	264,436
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	270,791	263,937
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	606	499
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	723	663
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	0	61
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	138	210
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	103	194
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	269,930	263,064
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	503	244
Non purchased loans and leases | Land development | Real estate – 1-4 family mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	113,345	123,179
Non purchased loans and leases | Land development | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	101,047	120,125
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	113,156	123,148
Non purchased loans and leases | Land development | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	100,848	120,048
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	189	31
Non purchased loans and leases | Land development | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	199	77
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	39	97
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	89	113
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	44
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	42	115
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	104	0
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	159	29
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	113,117	123,051
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	100,717	119,820
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	85	31
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	40	4
Non purchased loans and leases | Owner-occupied | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,373,150	1,334,765
Non purchased loans and leases | Owner-occupied | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,370,695	1,331,729
Non purchased loans and leases | Owner-occupied | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,455	3,036
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	2,342	779
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	477	0
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	795
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	706	2,598
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	1,368,353	1,330,155
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	1,272	438
Non purchased loans and leases | Non-owner occupied | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,249,112	2,194,739
Non purchased loans and leases | Non-owner occupied | Accruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,241,487	2,192,489
Non purchased loans and leases | Non-owner occupied | Nonaccruing Loans | Real estate – commercial mortgage:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	7,625	2,250
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	82	922
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	2	127
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	2,002	2,197
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	2,241,403	2,191,440
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	$ 5,623	$ 53