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Allowance for Loan Losses - Roll Forward Of the Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Allowance for loan losses: |  |  |  |
Beginning balance | $ 46,401 | $ 42,923 | $ 46,211 | $ 42,737
Charge-offs | (1,581) | (1,414) | (3,646) | (3,012)
Recoveries | 725 | 890 | 1,230 | 1,174
Net (charge-offs) recoveries | (856) | (524) | (2,416) | (1,838)
Provision for loan losses charged to operations | 1,810 | 1,750 | 3,560 | 3,250
Ending balance | 47,355 | 44,149 | 47,355 | 44,149
Individually evaluated for impairment | 1,515 | 3,208 | 1,515 | 3,208
Collectively evaluated for impairment | 43,584 | 38,781 | 43,584 | 38,781
Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Allowance for loan losses: |  |  |  |
Ending balance | 2,256 | 2,160 | 2,256 | 2,160
Commercial, financial, agricultural |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning balance | 7,071 | 5,112 | 5,542 | 5,486
Charge-offs | (457) | (304) | (1,116) | (1,136)
Recoveries | 114 | 64 | 349 | 121
Net (charge-offs) recoveries | (343) | (240) | (767) | (1,015)
Provision for loan losses charged to operations | 418 | 220 | 2,371 | 621
Ending balance | 7,146 | 5,092 | 7,146 | 5,092
Individually evaluated for impairment | 417 | 166 | 417 | 166
Collectively evaluated for impairment | 6,404 | 4,587 | 6,404 | 4,587
Commercial, financial, agricultural | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Allowance for loan losses: |  |  |  |
Ending balance | 325 | 339 | 325 | 339
Real estate – construction |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning balance | 4,198 | 2,119 | 3,428 | 2,380
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 3 | 3 | 7 | 34
Net (charge-offs) recoveries | 3 | 3 | 7 | 34
Provision for loan losses charged to operations | 501 | 458 | 1,267 | 166
Ending balance | 4,702 | 2,580 | 4,702 | 2,580
Individually evaluated for impairment | 0 | 2 | 0 | 2
Collectively evaluated for impairment | 4,702 | 2,578 | 4,702 | 2,578
Real estate – construction | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Allowance for loan losses: |  |  |  |
Ending balance | 0 | 0 | 0 | 0
Real estate – 1-4 family mortgage |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning balance | 11,404 | 12,162 | 12,009 | 14,294
Charge-offs | (979) | (551) | (1,650) | (826)
Recoveries | 83 | 64 | 216 | 146
Net (charge-offs) recoveries | (896) | (487) | (1,434) | (680)
Provision for loan losses charged to operations | 1,149 | 429 | 1,082 | (1,510)
Ending balance | 11,657 | 12,104 | 11,657 | 12,104
Individually evaluated for impairment | 76 | 878 | 76 | 878
Collectively evaluated for impairment | 11,053 | 10,534 | 11,053 | 10,534
Real estate – 1-4 family mortgage | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Allowance for loan losses: |  |  |  |
Ending balance | 528 | 692 | 528 | 692
Real estate – commercial mortgage |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning balance | 21,914 | 22,073 | 23,384 | 19,059
Charge-offs | (46) | (434) | (659) | (661)
Recoveries | 496 | 717 | 604 | 812
Net (charge-offs) recoveries | 450 | 283 | (55) | 151
Provision for loan losses charged to operations | 86 | 244 | (879) | 3,390
Ending balance | 22,450 | 22,600 | 22,450 | 22,600
Individually evaluated for impairment | 1,014 | 2,159 | 1,014 | 2,159
Collectively evaluated for impairment | 20,036 | 19,313 | 20,036 | 19,313
Real estate – commercial mortgage | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Allowance for loan losses: |  |  |  |
Ending balance | 1,400 | 1,128 | 1,400 | 1,128
Installment loans to individuals |  |  |  |
Allowance for loan losses: |  |  |  |
Beginning balance | 1,814 | 1,457 | 1,848 | 1,518
Charge-offs | (99) | (125) | (221) | (389)
Recoveries | 29 | 42 | 54 | 61
Net (charge-offs) recoveries | (70) | (83) | (167) | (328)
Provision for loan losses charged to operations | (344) | 399 | (281) | 583
Ending balance | 1,400 | 1,773 | 1,400 | 1,773
Individually evaluated for impairment | 8 | 3 | 8 | 3
Collectively evaluated for impairment | 1,389 | 1,769 | 1,389 | 1,769
Installment loans to individuals | Receivables Acquired with Deteriorated Credit Quality |  |  |  |
Allowance for loan losses: |  |  |  |
Ending balance | $ 3 | $ 1 | $ 3 | $ 1

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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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