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Amount of financing receivable not past due.

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Amount of financing receivable on nonaccrual status.

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Amount of financing receivable past due.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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Loans and Asset Quality Information (Schedule of Analysis of Payment Status of Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Analysis of the payment status of loans
Nonaccrual loans	$ 20,684	$ 22,575	$ 21,849
Total loans	4,303,787	4,249,064	4,113,785
Unamortized net deferred loan fees	1,624	1,299	$ (251)
Commercial, financial, and agricultural [Member]
Analysis of the payment status of loans
Nonaccrual loans	980	919
Real estate construction, land development & other land loans [Member]
Analysis of the payment status of loans
Nonaccrual loans	1,677	2,265
Real estate mortgage residential (1-4 family) first mortgages [Member]
Analysis of the payment status of loans
Nonaccrual loans	9,958	10,115
Real estate mortgage home equity loans / lines of credit [Member]
Analysis of the payment status of loans
Nonaccrual loans	1,632	1,685
Real estate mortgage commercial and other [Member]
Analysis of the payment status of loans
Nonaccrual loans	6,280	7,452
Installment loans to individuals [Member]
Analysis of the payment status of loans
Nonaccrual loans	157	139
All Total Loans [Member]
Analysis of the payment status of loans
Nonaccrual loans	20,684	22,575
Current	4,269,722	4,203,565
Total loans	4,302,163	4,247,765
Unamortized net deferred loan fees	1,624	1,299
Total loans	4,303,787	4,249,064
All Total Loans [Member] \| 30-59 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	9,594	18,324
All Total Loans [Member] \| 60-89 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	1,612	2,718
All Total Loans [Member] \| 90 Days or More Past Due [Member]
Analysis of the payment status of loans
Financing receivable, past due	551	583
All Total Loans [Member] \| Commercial, financial, and agricultural [Member]
Analysis of the payment status of loans
Nonaccrual loans	980	919
Current	466,067	455,692
Total loans	468,183	456,807
All Total Loans [Member] \| Commercial, financial, and agricultural [Member] \| 30-59 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	817	191
All Total Loans [Member] \| Commercial, financial, and agricultural [Member] \| 60-89 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	319	5
All Total Loans [Member] \| Commercial, financial, and agricultural [Member] \| 90 Days or More Past Due [Member]
Analysis of the payment status of loans
Financing receivable, past due
All Total Loans [Member] \| Real estate construction, land development & other land loans [Member]
Analysis of the payment status of loans
Nonaccrual loans	1,677	2,265
Current	551,446	515,472
Total loans	553,585	518,798
All Total Loans [Member] \| Real estate construction, land development & other land loans [Member] \| 30-59 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	369	849
All Total Loans [Member] \| Real estate construction, land development & other land loans [Member] \| 60-89 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	93	212
All Total Loans [Member] \| Real estate construction, land development & other land loans [Member] \| 90 Days or More Past Due [Member]
Analysis of the payment status of loans
Financing receivable, past due
All Total Loans [Member] \| Real estate mortgage residential (1-4 family) first mortgages [Member]
Analysis of the payment status of loans
Nonaccrual loans	9,958	10,115
Current	1,038,072	1,022,261
Total loans	1,054,995	1,047,923
All Total Loans [Member] \| Real estate mortgage residential (1-4 family) first mortgages [Member] \| 30-59 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	6,480	14,178
All Total Loans [Member] \| Real estate mortgage residential (1-4 family) first mortgages [Member] \| 60-89 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	485	1,369
All Total Loans [Member] \| Real estate mortgage residential (1-4 family) first mortgages [Member] \| 90 Days or More Past Due [Member]
Analysis of the payment status of loans
Financing receivable, past due
All Total Loans [Member] \| Real estate mortgage home equity loans / lines of credit [Member]
Analysis of the payment status of loans
Nonaccrual loans	1,632	1,685
Current	352,081	355,831
Total loans	354,337	358,818
All Total Loans [Member] \| Real estate mortgage home equity loans / lines of credit [Member] \| 30-59 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	624	1,048
All Total Loans [Member] \| Real estate mortgage home equity loans / lines of credit [Member] \| 60-89 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due		254
All Total Loans [Member] \| Real estate mortgage home equity loans / lines of credit [Member] \| 90 Days or More Past Due [Member]
Analysis of the payment status of loans
Financing receivable, past due
All Total Loans [Member] \| Real estate mortgage commercial and other [Member]
Analysis of the payment status of loans
Nonaccrual loans	6,280	7,452
Current	1,778,884	1,768,205
Total loans	1,785,877	1,776,886
All Total Loans [Member] \| Real estate mortgage commercial and other [Member] \| 30-59 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	438	709
All Total Loans [Member] \| Real estate mortgage commercial and other [Member] \| 60-89 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	275	520
All Total Loans [Member] \| Real estate mortgage commercial and other [Member] \| 90 Days or More Past Due [Member]
Analysis of the payment status of loans
Financing receivable, past due
All Total Loans [Member] \| Installment loans to individuals [Member]
Analysis of the payment status of loans
Nonaccrual loans	157	139
Current	68,585	70,422
Total loans	69,319	71,140
All Total Loans [Member] \| Installment loans to individuals [Member] \| 30-59 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	526	359
All Total Loans [Member] \| Installment loans to individuals [Member] \| 60-89 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	51	220
All Total Loans [Member] \| Installment loans to individuals [Member] \| 90 Days or More Past Due [Member]
Analysis of the payment status of loans
Financing receivable, past due
All Total Loans [Member] \| Purchased credit impaired [Member]
Analysis of the payment status of loans
Nonaccrual loans
Current	14,587	15,682
Total loans	15,867	17,393
All Total Loans [Member] \| Purchased credit impaired [Member] \| 30-59 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	340	990
All Total Loans [Member] \| Purchased credit impaired [Member] \| 60-89 Days past due [Member]
Analysis of the payment status of loans
Financing receivable, past due	389	138
All Total Loans [Member] \| Purchased credit impaired [Member] \| 90 Days or More Past Due [Member]
Analysis of the payment status of loans
Financing receivable, past due	$ 551	$ 583