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Allowance for Loan Losses - Roll Forward Of the Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Rollforward of the allowance for loan losses |  |  |  |  |  |
Beginning balance | $ 44,149 | $ 44,098 | $ 42,737 | $ 42,437 |  |
Charge-offs | (2,216) | (1,303) | (5,228) | (4,070) |  |
Recoveries | 448 | 479 | 1,622 | 1,677 |  |
Net (charge-offs) recoveries | (1,768) | (824) | (3,606) | (2,393) |  |
Provision for loan losses |  | 2,676 |  | 5,619 |  |
Benefit attributable to FDIC loss-share agreements |  | (149) |  | (265) |  |
Recoveries payable to FDIC |  | 123 |  | 526 |  |
Provision for loan losses charged to operations | 2,150 | 2,650 | 5,400 | 5,880 |  |
Ending balance | 44,531 | 45,924 | 44,531 | 45,924 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | $ 2,928 | $ 8,899
Collectively evaluated for impairment |  |  |  |  | 39,678 | 33,607
Purchased with deteriorated credit quality | 44,149 | 44,098 | 42,737 | 42,437 | 44,531 | 45,924
Receivables Acquired with Deteriorated Credit Quality |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Ending balance | 1,925 | 3,418 | 1,925 | 3,418 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Purchased with deteriorated credit quality | 1,925 | 3,418 | 1,925 | 3,418 | 1,925 | 3,418
Commercial, financial, agricultural |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Beginning balance | 5,092 | 4,512 | 5,486 | 4,186 |  |
Charge-offs | (974) | (394) | (2,110) | (1,099) |  |
Recoveries | 137 | 85 | 258 | 243 |  |
Net (charge-offs) recoveries | (837) | (309) | (1,852) | (856) |  |
Provision for loan losses |  | 1,308 |  | 2,174 |  |
Benefit attributable to FDIC loss-share agreements |  | (61) |  | (61) |  |
Recoveries payable to FDIC |  | 4 |  | 11 |  |
Provision for loan losses charged to operations | 938 | 1,251 | 1,559 | 2,124 |  |
Ending balance | 5,193 | 5,454 | 5,193 | 5,454 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 96 | 1,004
Collectively evaluated for impairment |  |  |  |  | 4,772 | 4,002
Purchased with deteriorated credit quality | 5,092 | 4,512 | 5,486 | 4,186 | 5,193 | 5,454
Commercial, financial, agricultural | Receivables Acquired with Deteriorated Credit Quality |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Ending balance | 325 | 448 | 325 | 448 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Purchased with deteriorated credit quality | 325 | 448 | 325 | 448 | 325 | 448
Real estate – construction |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Beginning balance | 2,580 | 2,269 | 2,380 | 1,852 |  |
Charge-offs |  | 0 | 0 | 0 |  |
Recoveries | 67 | 4 | 101 | 15 |  |
Net (charge-offs) recoveries | 67 | 4 | 101 | 15 |  |
Provision for loan losses |  | (52) |  | 348 |  |
Benefit attributable to FDIC loss-share agreements |  | 0 |  | 0 |  |
Recoveries payable to FDIC |  | 2 |  | 8 |  |
Provision for loan losses charged to operations | 161 | (50) | 327 | 356 |  |
Ending balance | 2,808 | 2,223 | 2,808 | 2,223 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 9 | 2
Collectively evaluated for impairment |  |  |  |  | 2,799 | 2,221
Purchased with deteriorated credit quality | 2,580 | 2,269 | 2,380 | 1,852 | 2,808 | 2,223
Real estate – construction | Receivables Acquired with Deteriorated Credit Quality |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Ending balance | 0 | 0 | 0 | 0 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Purchased with deteriorated credit quality | 0 | 0 | 0 | 0 | 0 | 0
Real estate – 1-4 family mortgage |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Beginning balance | 12,104 | 14,219 | 14,294 | 13,908 |  |
Charge-offs | (575) | (242) | (1,401) | (745) |  |
Recoveries | 145 | 188 | 291 | 753 |  |
Net (charge-offs) recoveries | (430) | (54) | (1,110) | 8 |  |
Provision for loan losses |  | 1,154 |  | 1,333 |  |
Benefit attributable to FDIC loss-share agreements |  | 0 |  | (115) |  |
Recoveries payable to FDIC |  | 93 |  | 278 |  |
Provision for loan losses charged to operations | 439 | 1,247 | (1,071) | 1,496 |  |
Ending balance | 12,113 | 15,412 | 12,113 | 15,412 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 855 | 5,144
Collectively evaluated for impairment |  |  |  |  | 10,644 | 9,542
Purchased with deteriorated credit quality | 12,104 | 14,219 | 14,294 | 13,908 | 12,113 | 15,412
Real estate – 1-4 family mortgage | Receivables Acquired with Deteriorated Credit Quality |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Ending balance | 614 | 726 | 614 | 726 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Purchased with deteriorated credit quality | 614 | 726 | 614 | 726 | 614 | 726
Real estate – commercial mortgage |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Beginning balance | 22,600 | 21,683 | 19,059 | 21,111 |  |
Charge-offs | (543) | (466) | (1,204) | (1,653) |  |
Recoveries | 72 | 181 | 884 | 582 |  |
Net (charge-offs) recoveries | (471) | (285) | (320) | (1,071) |  |
Provision for loan losses |  | (87) |  | 1,067 |  |
Benefit attributable to FDIC loss-share agreements |  | (47) |  | (48) |  |
Recoveries payable to FDIC |  | 24 |  | 229 |  |
Provision for loan losses charged to operations | 481 | (110) | 3,871 | 1,248 |  |
Ending balance | 22,610 | 21,288 | 22,610 | 21,288 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 1,963 | 2,635
Collectively evaluated for impairment |  |  |  |  | 19,662 | 16,410
Purchased with deteriorated credit quality | 22,600 | 21,683 | 19,059 | 21,111 | 22,610 | 21,288
Real estate – commercial mortgage | Receivables Acquired with Deteriorated Credit Quality |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Ending balance | 985 | 2,243 | 985 | 2,243 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Purchased with deteriorated credit quality | 985 | 2,243 | 985 | 2,243 | 985 | 2,243
Installment loans to individuals |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Beginning balance | 1,773 | 1,415 | 1,518 | 1,380 |  |
Charge-offs | (124) | (201) | (513) | (573) |  |
Recoveries | 27 | 21 | 88 | 84 |  |
Net (charge-offs) recoveries | (97) | (180) | (425) | (489) |  |
Provision for loan losses |  | 353 |  | 697 |  |
Benefit attributable to FDIC loss-share agreements |  | (41) |  | (41) |  |
Recoveries payable to FDIC |  | 0 |  | 0 |  |
Provision for loan losses charged to operations | 131 | 312 | 714 | 656 |  |
Ending balance | 1,807 | 1,547 | 1,807 | 1,547 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 5 | 114
Collectively evaluated for impairment |  |  |  |  | 1,801 | 1,432
Purchased with deteriorated credit quality | 1,773 | 1,415 | 1,518 | 1,380 | 1,807 | 1,547
Installment loans to individuals | Receivables Acquired with Deteriorated Credit Quality |  |  |  |  |  |
Rollforward of the allowance for loan losses |  |  |  |  |  |
Ending balance | 1 | 1 | 1 | 1 |  |
Period-End Amount Allocated to: |  |  |  |  |  |
Purchased with deteriorated credit quality | $ 1 | $ 1 | $ 1 | $ 1 | $ 1 | $ 1

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- Definition Allowance for loan losses recoveries payable to federal deposit insurance corporation. + References No definition available. + Details
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- Definition Benefit attributable to federal deposit insurance corporation loss share agreements. + References No definition available. + Details
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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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