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LOANS (Tables) | 3 Months Ended
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Mar. 31, 2018
Receivables [Abstract] |
Schedule of Loans | The following is a summary of total loans:
|  | March 31, 2018 |  | December 31, 2017
(in thousands) |  | Business Activities Loans |  | Acquired Loans |  | Total |  | Business Activities Loans |  | Acquired Loans |  | Total
Commercial Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | 31,073 |  |  | $ | 14,800 |  |  | $ | 45,873 |  |  | $ | 28,892 |  |  | $ | 16,781 |  |  | $ | 45,673 |
Other commercial real estate |  | 512,093 |  |  | 266,755 |  |  | 778,848 |  |  | 505,119 |  |  | 275,954 |  |  | 781,073 |
Total Commercial Real Estate |  | 543,166 |  |  | 281,555 |  |  | 824,721 |  |  | 534,011 |  |  | 292,735 |  |  | 826,746 |
Commercial and Industrial: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Commercial |  | 210,304 |  |  | 65,198 |  |  | 275,502 |  |  | 198,051 |  |  | 68,069 |  |  | 266,120 |
Agricultural |  | 26,309 |  |  | — |  |  | 26,309 |  |  | 27,588 |  |  | — |  |  | 27,588 |
Tax exempt |  | 43,092 |  |  | 42,302 |  |  | 85,394 |  |  | 42,365 |  |  | 43,350 |  |  | 85,715 |
Total Commercial and Industrial |  | 279,705 |  |  | 107,500 |  |  | 387,205 |  |  | 268,004 |  |  | 111,419 |  |  | 379,423 |
Total Commercial Loans |  | 822,871 |  |  | 389,055 |  |  | 1,211,926 |  |  | 802,015 |  |  | 404,154 |  |  | 1,206,169 |
Residential Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgages |  | 588,465 |  |  | 544,512 |  |  | 1,132,977 |  |  | 591,411 |  |  | 564,271 |  |  | 1,155,682 |
Total Residential Real Estate |  | 588,465 |  |  | 544,512 |  |  | 1,132,977 |  |  | 591,411 |  |  | 564,271 |  |  | 1,155,682 |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Home equity |  | 52,100 |  |  | 57,766 |  |  | 109,866 |  |  | 51,376 |  |  | 62,217 |  |  | 113,593 |
Other consumer |  | 7,580 |  |  | 2,070 |  |  | 9,650 |  |  | 7,828 |  |  | 2,341 |  |  | 10,169 |
Total Consumer |  | 59,680 |  |  | 59,836 |  |  | 119,516 |  |  | 59,204 |  |  | 64,558 |  |  | 123,762 |
Total Loans |  | $ | 1,471,016 |  |  | $ | 993,403 |  |  | $ | 2,464,419 |  |  | $ | 1,452,630 |  |  | $ | 1,032,983 |  |  | $ | 2,485,613 |
Schedule of Activity in the Accretable Yield for the Acquired Loan Portfolio that Falls Under the Review of ASC 310-30, Accounting for Certain Loans or Debt Securities Acquired in a Transfer | The following table summarizes activity in the accretable yield for the acquired loan portfolio that falls under the purview of ASC 310-30, Accounting for Certain Loans or Debt Securities Acquired in a Transfer:
|  | Three Months Ended March 31,
(in thousands) |  | 2018 |  | 2017
Balance at beginning of period |  | $ | 3,509 |  |  | $ | — |
Acquisitions |  | — |  |  | 3,398 |
Reclassification from nonaccretable difference for loans with improved cash flows |  | 199 |  |  | — |
Changes in expected cash flows that do not affect the nonaccretable difference |  | — |  |  | — |
Reclassification to troubled debt restructurings |  | — |  |  | — |
Accretion |  | (361 | ) |  | (204 | )
Balance at end of period |  | $ | 3,347 |  |  | $ | 3,194 |
Summary of Past Due Loans | The following is a summary of past due loans at March 31, 2018 and December 31, 2017: Business Activities Loans
(in thousands) |  | 30-59 Days Past Due |  | 60-89 Days Past Due |  | 90 Days or Greater Past Due |  | Total Past Due |  | Current |  | Total Loans |  | Past Due > 90 days and Accruing
March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | 2 |  |  | $ | 566 |  |  | $ | 568 |  |  | $ | 30,505 |  |  | $ | 31,073 |  |  | $ | — |
Other commercial real estate |  | 1,008 |  |  | 158 |  |  | 6,656 |  |  | 7,822 |  |  | 504,271 |  |  | 512,093 |  |  | — |
Total Commercial Real Estate |  | 1,008 |  |  | 160 |  |  | 7,222 |  |  | 8,390 |  |  | 534,776 |  |  | 543,166 |  |  | — |
Commercial and Industrial: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Commercial |  | 829 |  |  | 12 |  |  | 506 |  |  | 1,347 |  |  | 208,957 |  |  | 210,304 |  |  | — |
Agricultural |  | 39 |  |  | 88 |  |  | 101 |  |  | 228 |  |  | 26,081 |  |  | 26,309 |  |  | 2 |
Tax exempt |  | — |  |  | — |  |  | — |  |  | — |  |  | 43,092 |  |  | 43,092 |  |  | — |
Total Commercial and Industrial |  | 868 |  |  | 100 |  |  | 607 |  |  | 1,575 |  |  | 278,130 |  |  | 279,705 |  |  | 2 |
Total Commercial Loans |  | 1,876 |  |  | 260 |  |  | 7,829 |  |  | 9,965 |  |  | 812,906 |  |  | 822,871 |  |  | 2 |
Residential Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgages |  | 624 |  |  | 810 |  |  | 3,772 |  |  | 5,206 |  |  | 583,259 |  |  | 588,465 |  |  | — |
Total Residential Real Estate |  | 624 |  |  | 810 |  |  | 3,772 |  |  | 5,206 |  |  | 583,259 |  |  | 588,465 |  |  | — |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Home equity |  | 174 |  |  | 28 |  |  | 349 |  |  | 551 |  |  | 51,549 |  |  | 52,100 |  |  | — |
Other consumer |  | 132 |  |  | 2 |  |  | — |  |  | 134 |  |  | 7,446 |  |  | 7,580 |  |  | — |
Total Consumer |  | 306 |  |  | 30 |  |  | 349 |  |  | 685 |  |  | 58,995 |  |  | 59,680 |  |  | — |
Total Loans |  | $ | 2,806 |  |  | $ | 1,100 |  |  | $ | 11,950 |  |  | $ | 15,856 |  |  | $ | 1,455,160 |  |  | $ | 1,471,016 |  |  | $ | 2 |
Business Activities Loans
(in thousands) |  | 30-59 Days Past Due |  | 60-89 Days Past Due |  | 90 Days or Greater Past Due |  | Total Past Due |  | Current |  | Total Loans |  | Past Due > 90 days and Accruing
December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | 637 |  |  | $ | 637 |  |  | $ | 28,255 |  |  | $ | 28,892 |  |  | $ | — |
Other commercial real estate |  | 965 |  |  | 1,659 |  |  | 5,065 |  |  | 7,689 |  |  | 497,430 |  |  | 505,119 |  |  | 119 |
Total Commercial Real Estate |  | 965 |  |  | 1,659 |  |  | 5,702 |  |  | 8,326 |  |  | 525,685 |  |  | 534,011 |  |  | 119 |
Commercial and Industrial: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Commercial |  | 186 |  |  | 329 |  |  | 702 |  |  | 1,217 |  |  | 196,834 |  |  | 198,051 |  |  | 21 |
Agricultural |  | 42 |  |  | 159 |  |  | 198 |  |  | 399 |  |  | 27,189 |  |  | 27,588 |  |  | 155 |
Tax exempt |  | — |  |  | — |  |  | — |  |  | — |  |  | 42,365 |  |  | 42,365 |  |  | — |
Total Commercial and Industrial |  | 228 |  |  | 488 |  |  | 900 |  |  | 1,616 |  |  | 266,388 |  |  | 268,004 |  |  | 176 |
Total Commercial Loans |  | 1,193 |  |  | 2,147 |  |  | 6,602 |  |  | 9,942 |  |  | 792,073 |  |  | 802,015 |  |  | 295 |
Residential Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgages |  | 3,096 |  |  | 711 |  |  | 975 |  |  | 4,782 |  |  | 586,629 |  |  | 591,411 |  |  | — |
Total Residential Real Estate |  | 3,096 |  |  | 711 |  |  | 975 |  |  | 4,782 |  |  | 586,629 |  |  | 591,411 |  |  | — |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Home equity |  | 515 |  |  | — |  |  | 199 |  |  | 714 |  |  | 50,662 |  |  | 51,376 |  |  | 199 |
Other consumer |  | 36 |  |  | 24 |  |  | — |  |  | 60 |  |  | 7,768 |  |  | 7,828 |  |  | — |
Total Consumer |  | 551 |  |  | 24 |  |  | 199 |  |  | 774 |  |  | 58,430 |  |  | 59,204 |  |  | 199 |
Total Loans |  | $ | 4,840 |  |  | $ | 2,882 |  |  | $ | 7,776 |  |  | $ | 15,498 |  |  | $ | 1,437,132 |  |  | $ | 1,452,630 |  |  | $ | 494 |
Acquired Loans
(in thousands) |  | 30-59 Days Past Due |  | 60-89 Days Past Due |  | 90 Days or Greater Past Due |  | Total Past Due |  | Acquired Credit Impaired |  | Total Loans |  | Past Due > 90 days and Accruing
March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 260 |  |  | $ | 14,800 |  |  | $ | — |
Other commercial real estate |  | 411 |  |  | — |  |  | 305 |  |  | 716 |  |  | 8,350 |  |  | 266,755 |  |  | — |
Total Commercial Real Estate |  | 411 |  |  | — |  |  | 305 |  |  | 716 |  |  | 8,610 |  |  | 281,555 |  |  | — |
Commercial and Industrial: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Commercial |  | 208 |  |  | 97 |  |  | 148 |  |  | 453 |  |  | 459 |  |  | 65,198 |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Tax exempt |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 42,302 |  |  | — |
Total Commercial and Industrial |  | 208 |  |  | 97 |  |  | 148 |  |  | 453 |  |  | 459 |  |  | 107,500 |  |  | — |
Total Commercial Loans |  | 619 |  |  | 97 |  |  | 453 |  |  | 1,169 |  |  | 9,069 |  |  | 389,055 |  |  | — |
Residential Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgages |  | 1,376 |  |  | 204 |  |  | 771 |  |  | 2,351 |  |  | 3,168 |  |  | 544,512 |  |  | — |
Total Residential Real Estate |  | 1,376 |  |  | 204 |  |  | 771 |  |  | 2,351 |  |  | 3,168 |  |  | 544,512 |  |  | — |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Home equity |  | 292 |  |  | 46 |  |  | 80 |  |  | 418 |  |  | 25 |  |  | 57,766 |  |  | — |
Other consumer |  | 3 |  |  | — |  |  | — |  |  | 3 |  |  | 3 |  |  | 2,070 |  |  | — |
Total Consumer |  | 295 |  |  | 46 |  |  | 80 |  |  | 421 |  |  | 28 |  |  | 59,836 |  |  | — |
Total Loans |  | $ | 2,290 |  |  | $ | 347 |  |  | $ | 1,304 |  |  | $ | 3,941 |  |  | $ | 12,265 |  |  | $ | 993,403 |  |  | $ | — |
Acquired Loans
(in thousands) |  | 30-59 Days Past Due |  | 60-89 Days Past Due |  | 90 Days or Greater Past Due |  | Total Past Due |  | Acquired Credit Impaired |  | Total Loans |  | Past Due > 90 days and Accruing
December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | 124 |  |  | $ | 9 |  |  | $ | — |  |  | $ | 133 |  |  | $ | 258 |  |  | $ | 16,781 |  |  | $ | — |
Other commercial real estate |  | 278 |  |  | — |  |  | 411 |  |  | 689 |  |  | 8,397 |  |  | 275,954 |  |  | — |
Total Commercial Real Estate |  | 402 |  |  | 9 |  |  | 411 |  |  | 822 |  |  | 8,655 |  |  | 292,735 |  |  | — |
Commercial and Industrial: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Commercial |  | 125 |  |  | 14 |  |  | 49 |  |  | 188 |  |  | 632 |  |  | 68,069 |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Tax exempt |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 43,350 |  |  | — |
Total Commercial and Industrial |  | 125 |  |  | 14 |  |  | 49 |  |  | 188 |  |  | 632 |  |  | 111,419 |  |  | — |
Total Commercial Loans |  | 527 |  |  | 23 |  |  | 460 |  |  | 1,010 |  |  | 9,287 |  |  | 404,154 |  |  | — |
Residential Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgages |  | 752 |  |  | 388 |  |  | 614 |  |  | 1,754 |  |  | 3,259 |  |  | 564,271 |  |  | — |
Total Residential Real Estate |  | 752 |  |  | 388 |  |  | 614 |  |  | 1,754 |  |  | 3,259 |  |  | 564,271 |  |  | — |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Home equity |  | 125 |  |  | 117 |  |  | 80 |  |  | 322 |  |  | 38 |  |  | 62,217 |  |  | 16 |
Other consumer |  | 2 |  |  | — |  |  | — |  |  | 2 |  |  | 3 |  |  | 2,341 |  |  | — |
Total Consumer |  | 127 |  |  | 117 |  |  | 80 |  |  | 324 |  |  | 41 |  |  | 64,558 |  |  | 16 |
Total Loans |  | $ | 1,406 |  |  | $ | 528 |  |  | $ | 1,154 |  |  | $ | 3,088 |  |  | $ | 12,587 |  |  | $ | 1,032,983 |  |  | $ | 16 |
Summary of Information Pertaining to Non-Accrual Loans | The following is summary information pertaining to non-accrual loans at March 31, 2018 and December 31, 2017:
|  | March 31, 2018 |  | December 31, 2017
(in thousands) |  | Business Activities Loans |  | Acquired Loans |  | Total |  | Business Activities Loans |  | Acquired Loans |  | Total
Commercial Real Estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | 566 |  |  | $ | — |  |  | $ | 566 |  |  | $ | 637 |  |  | $ | — |  |  | $ | 637 |
Other commercial real estate |  | 7,401 |  |  | 455 |  |  | 7,856 |  |  | 7,146 |  |  | 560 |  |  | 7,706 |
Total Commercial Real Estate |  | 7,967 |  |  | 455 |  |  | 8,422 |  |  | 7,783 |  |  | 560 |  |  | 8,343 |
Commercial and Industrial: |  |  |  |  |  |  |  |  |  |  |  |
Other Commercial |  | 1,532 |  |  | 528 |  |  | 2,060 |  |  | 703 |  |  | 463 |  |  | 1,166 |
Agricultural |  | 244 |  |  | — |  |  | 244 |  |  | 43 |  |  | — |  |  | 43 |
Tax exempt |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total Commercial and Industrial |  | 1,776 |  |  | 528 |  |  | 2,304 |  |  | 746 |  |  | 463 |  |  | 1,209 |
Total Commercial Loans |  | 9,743 |  |  | 983 |  |  | 10,726 |  |  | 8,529 |  |  | 1,023 |  |  | 9,552 |
Residential Real Estate: |  |  |  |  |  |  |  |  |  |  |  |
Residential mortgages |  | 6,527 |  |  | 2,021 |  |  | 8,548 |  |  | 3,408 |  |  | 858 |  |  | 4,266 |
Total Residential Real Estate |  | 6,527 |  |  | 2,021 |  |  | 8,548 |  |  | 3,408 |  |  | 858 |  |  | 4,266 |
Consumer: |  |  |  |  |  |  |  |  |  |  |  |
Home equity |  | 624 |  |  | 277 |  |  | 901 |  |  | 130 |  |  | 217 |  |  | 347 |
Other consumer |  | 109 |  |  | 55 |  |  | 164 |  |  | 95 |  |  | 58 |  |  | 153 |
Total Consumer |  | 733 |  |  | 332 |  |  | 1,065 |  |  | 225 |  |  | 275 |  |  | 500 |
Total Loans |  | $ | 17,003 |  |  | $ | 3,336 |  |  | $ | 20,339 |  |  | $ | 12,162 |  |  | $ | 2,156 |  |  | $ | 14,318 |
Schedule of Loans Evaluated for Impairment | Loans evaluated for impairment as of March 31, 2018 and December 31, 2017 were as follows: Business Activities Loans
(in thousands) |  | Commercial real estate |  | Commercial and industrial |  | Residential real estate |  | Consumer |  | Total
March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at end of period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 7,641 |  |  | $ | 1,504 |  |  | $ | 4,386 |  |  | $ | 362 |  |  | $ | 13,893 |
Collectively evaluated |  | 535,525 |  |  | 278,201 |  |  | 584,079 |  |  | 59,318 |  |  | 1,457,123 |
Total |  | $ | 543,166 |  |  | $ | 279,705 |  |  | $ | 588,465 |  |  | $ | 59,680 |  |  | $ | 1,471,016 |
Business Activities Loans
(in thousands) |  | Commercial real estate |  | Commercial and industrial |  | Residential real estate |  | Consumer |  | Total
December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at end of period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 7,604 |  |  | $ | 626 |  |  | $ | 1,404 |  |  | $ | 13 |  |  | $ | 9,647 |
Collectively evaluated |  | 526,407 |  |  | 267,378 |  |  | 590,007 |  |  | 59,191 |  |  | 1,442,983 |
Total |  | $ | 534,011 |  |  | $ | 268,004 |  |  | $ | 591,411 |  |  | $ | 59,204 |  |  | $ | 1,452,630 |
Acquired Loans
(in thousands) |  | Commercial real estate |  | Commercial and industrial |  | Residential real estate |  | Consumer |  | Total
March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at end of period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 133 |  |  | $ | 598 |  |  | $ | 503 |  |  | $ | — |  |  | $ | 1,234 |
Purchased Credit Impaired |  | 8,610 |  |  | 459 |  |  | 3,168 |  |  | 28 |  |  | 12,265 |
Collectively evaluated |  | 272,812 |  |  | 106,443 |  |  | 540,841 |  |  | 59,808 |  |  | 979,904 |
Total |  | $ | 281,555 |  |  | $ | 107,500 |  |  | $ | 544,512 |  |  | $ | 59,836 |  |  | $ | 993,403 |
Acquired Loans
(in thousands) |  | Commercial real estate |  | Commercial and industrial |  | Residential real estate |  | Consumer |  | Total
December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans receivable: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at end of period |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 241 |  |  | $ | 571 |  |  | $ | 271 |  |  | $ | 63 |  |  | $ | 1,146 |
Purchased Credit Impaired |  | 8,655 |  |  | 632 |  |  | 3,259 |  |  | 41 |  |  | 12,587 |
Collectively evaluated |  | 283,839 |  |  | 110,216 |  |  | 560,741 |  |  | 64,454 |  |  | 1,019,250 |
Total |  | $ | 292,735 |  |  | $ | 111,419 |  |  | $ | 564,271 |  |  | $ | 64,558 |  |  | $ | 1,032,983 |
Summary of Impaired Loans | The following is a summary of impaired loans at March 31, 2018 and December 31, 2017: Business Activities Loans
|  | March 31, 2018
(in thousands) |  | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance
With no related allowance: |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | 566 |  |  | $ | 2,491 |  |  | $ | — |
Commercial real estate other |  | 5,933 |  |  | 5,944 |  |  | — |
Commercial other |  | 962 |  |  | 966 |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |
Tax exempt loans |  | — |  |  | — |  |  | — |
Residential real estate |  | 3,586 |  |  | 3,603 |  |  | — |
Home equity |  | 362 |  |  | 463 |  |  | — |
Consumer other |  | — |  |  | — |  |  | — |
With an allowance recorded: |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial real estate other |  | 1,142 |  |  | 1,204 |  |  | 433 |
Commercial other |  | 542 |  |  | 544 |  |  | 132 |
Agricultural |  | — |  |  | — |  |  | — |
Tax exempt loans |  | — |  |  | — |  |  | — |
Residential real estate |  | 800 |  |  | 801 |  |  | 84 |
Home equity |  | — |  |  | — |  |  | — |
Consumer other |  | — |  |  | — |  |  | — |
Total |  |  |  |  |  |
Commercial real estate |  | $ | 7,641 |  |  | $ | 9,639 |  |  | $ | 433 |
Commercial and industrial |  | 1,504 |  |  | 1,510 |  |  | 132 |
Residential real estate |  | 4,386 |  |  | 4,404 |  |  | 84 |
Consumer |  | 362 |  |  | 463 |  |  | — |
Total impaired loans |  | $ | 13,893 |  |  | $ | 16,016 |  |  | $ | 649 |
Acquired Loans
|  | March 31, 2018
(in thousands) |  | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance
With no related allowance: |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial real estate other |  | 133 |  |  | 245 |  |  | — |
Commercial other |  | 176 |  |  | 175 |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |
Tax exempt loans |  | — |  |  | — |  |  | — |
Residential real estate |  | 503 |  |  | 507 |  |  | — |
Home equity |  | — |  |  | — |  |  | — |
Consumer other |  | — |  |  | — |  |  | — |
With an allowance recorded: |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial real estate other |  | — |  |  | — |  |  | — |
Commercial other |  | 422 |  |  | 436 |  |  | 121 |
Agricultural |  | — |  |  | — |  |  | — |
Tax exempt loans |  | — |  |  | — |  |  | — |
Residential real estate |  | — |  |  | — |  |  | — |
Home equity |  | — |  |  | — |  |  | — |
Consumer other |  | — |  |  | — |  |  | — |
Total |  |  |  |  |  |
Commercial real estate |  | $ | 133 |  |  | $ | 245 |  |  | $ | — |
Commercial and industrial |  | 598 |  |  | 611 |  |  | 121 |
Residential real estate |  | 503 |  |  | 507 |  |  | — |
Consumer |  | — |  |  | — |  |  | — |
Total impaired loans |  | $ | 1,234 |  |  | $ | 1,363 |  |  | $ | 121 |
Business Activities Loans
|  | December 31, 2017
(in thousands) |  | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance
With no related allowance: |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial real estate other |  | 5,896 |  |  | 5,903 |  |  | — |
Commercial other |  | 218 |  |  | 217 |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |
Tax exempt loans |  | — |  |  | — |  |  | — |
Residential real estate |  | 1,247 |  |  | 1,260 |  |  | — |
Home equity |  | 13 |  |  | 13 |  |  | — |
Consumer other |  | — |  |  | — |  |  | — |
With an allowance recorded: |  |  |  |  |  |
Construction and land development |  | $ | 637 |  |  | $ | 2,563 |  |  | $ | 59 |
Commercial real estate other |  | 1,071 |  |  | 1,132 |  |  | 388 |
Commercial other |  | 408 |  |  | 408 |  |  | 3 |
Agricultural |  | — |  |  | — |  |  | — |
Tax exempt loans |  | — |  |  | — |  |  | — |
Residential real estate |  | 157 |  |  | 157 |  |  | 9 |
Home equity |  | — |  |  | — |  |  | — |
Consumer other |  | — |  |  | — |  |  | — |
Total |  |  |  |  |  |
Commercial real estate |  | $ | 7,604 |  |  | $ | 9,598 |  |  | $ | 447 |
Commercial and industrial |  | 626 |  |  | 625 |  |  | 3 |
Residential real estate |  | 1,404 |  |  | 1,417 |  |  | 9 |
Consumer |  | 13 |  |  | 13 |  |  | — |
Total impaired loans |  | $ | 9,647 |  |  | $ | 11,653 |  |  | $ | 459 |
Acquired Loans
|  | December 31, 2017
(in thousands) |  | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance
With no related allowance: |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |
Other commercial real estate |  | 241 |  |  | 352 |  |  | — |
Other commercial |  | 571 |  |  | 584 |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |
Tax exempt |  | — |  |  | — |  |  | — |
Residential mortgages |  | 271 |  |  | 278 |  |  | — |
Home equity |  | 63 |  |  | 156 |  |  | — |
Other consumer |  | — |  |  | — |  |  | — |
With an allowance recorded: |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |
Other commercial real estate |  | — |  |  | — |  |  | — |
Other commercial |  | — |  |  | — |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |
Tax exempt |  | — |  |  | — |  |  | — |
Residential mortgages |  | — |  |  | — |  |  | — |
Home equity |  | — |  |  | — |  |  | — |
Other consumer |  | — |  |  | — |  |  | — |
Total |  |  |  |  |  |
Commercial real estate |  | $ | 241 |  |  | $ | 352 |  |  | $ | — |
Commercial and industrial |  | 571 |  |  | 584 |  |  | — |
Residential real estate |  | 271 |  |  | 278 |  |  | — |
Consumer |  | 63 |  |  | 156 |  |  | — |
Total impaired loans |  | $ | 1,146 |  |  | $ | 1,370 |  |  | $ | — |
Summary of the Average Recorded Investment and Interest Income Recognized on Impaired Loans | The following is a summary of the average recorded investment and interest income recognized on impaired loans as of March 31, 2018 and 2017: Business Activities Loans
|  | Three Months Ended March 31, 2018 |  | Three Months Ended March 31, 2017
(in thousands) |  | Average Recorded Investment |  | Cash Basis Interest Income Recognized |  | Average Recorded Investment |  | Cash Basis Interest Income Recognized
With no related allowance: |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | 589 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial real estate other |  | 5,937 |  |  | — |  |  | 2,592 |  |  | 34 |
Commercial other |  | 1,334 |  |  | — |  |  | 226 |  |  | 3 |
Agricultural |  | — |  |  | — |  |  | 192 |  |  | 2 |
Tax exempt loans |  | — |  |  | — |  |  | — |  |  | — |
Residential real estate |  | 3,591 |  |  | — |  |  | 1,500 |  |  | 22 |
Home equity |  | 444 |  |  | — |  |  | 590 |  |  | — |
Consumer other |  | — |  |  | — |  |  | 44 |  |  | 1 |
With an allowance recorded: |  |  |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial real estate other |  | 1,144 |  |  | — |  |  | 1,723 |  |  | — |
Commercial other |  | 187 |  |  | — |  |  | 216 |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |  |  | — |
Tax exempt loans |  | — |  |  | — |  |  | — |  |  | — |
Residential real estate |  | 802 |  |  | — |  |  | 321 |  |  | — |
Home equity |  | — |  |  | — |  |  | — |  |  | — |
Consumer other |  | — |  |  | — |  |  | 9 |  |  | — |
Total |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 7,670 |  |  | $ | — |  |  | $ | 4,315 |  |  | $ | 34 |
Commercial and industrial |  | 1,521 |  |  | — |  |  | 634 |  |  | 5 |
Residential real estate |  | 4,393 |  |  | — |  |  | 1,821 |  |  | 22 |
Consumer |  | 444 |  |  | — |  |  | 643 |  |  | 1 |
Total impaired loans |  | $ | 14,028 |  |  | $ | — |  |  | $ | 7,413 |  |  | $ | 62 |
Acquired Loans
|  | Three Months Ended March 31, 2018 |  | Three Months Ended March 31, 2017
(in thousands) |  | Average Recorded Investment |  | Cash Basis Interest Income Recognized |  | Average Recorded Investment |  | Cash Basis Interest Income Recognized
With no related allowance: |  |  |  |  |  |  |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial real estate other |  | 133 |  |  | — |  |  | — |  |  | — |
Commercial other |  | 161 |  |  | 1 |  |  | — |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |  |  | — |
Tax exempt loans |  | — |  |  | — |  |  | — |  |  | — |
Residential real estate |  | 508 |  |  | — |  |  | — |  |  | — |
Home equity |  | — |  |  | — |  |  | — |  |  | — |
Consumer other |  | — |  |  | — |  |  | — |  |  | — |
With an allowance recorded: |  |  |  |  |  |  |  |
Construction and land development |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial real estate other |  | — |  |  | — |  |  | — |  |  | — |
Commercial other |  | 434 |  |  | — |  |  | — |  |  | — |
Agricultural |  | — |  |  | — |  |  | — |  |  | — |
Tax exempt loans |  | — |  |  | — |  |  | — |  |  | — |
Residential real estate |  | — |  |  | — |  |  | — |  |  | — |
Home equity |  | — |  |  | — |  |  | — |  |  | — |
Consumer other |  | — |  |  | — |  |  | — |  |  | — |
Total |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 133 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Commercial and industrial |  | 595 |  |  | 1 |  |  | — |  |  | — |
Residential real estate |  | 508 |  |  | — |  |  | — |  |  | — |
Consumer |  | — |  |  | — |  |  | — |  |  | — |
Total impaired loans |  | $ | 1,236 |  |  | $ | 1 |  |  | $ | — |  |  | $ | — |
Schedule of Recorded Investment and Number of Modifications for TDRs Identified During the Period | The following tables include the recorded investment and number of modifications identified during the three months ended March 31, 2018 and for the three months ended March 31, 2017, respectively. The table includes the recorded investment in the loans prior to a modification and also the recorded investment in the loans after the loans were restructured. The modifications for the three months ended March 31, 2018 were attributable to interest rate concessions, maturity date extensions, reamortization or a combination of two concessions. The modifications for the three months ending March 31, 2017 were attributable to interest rate concessions, maturity date extensions, or a combination of both.
|  | Three Months Ended March 31, 2018
(Dollars in thousands) |  | Number of Modifications |  | Pre-Modification Outstanding Recorded Investment |  | Post-Modification Outstanding Recorded Investment
Troubled Debt Restructurings |  |  |  |  |  |  |  |  |
Commercial installment |  | 2 |  |  | $ | 452 |  |  | $ | 448 |
Agricultural |  | 1 |  |  | 2 |  |  | 2 |
Commercial real estate |  | 1 |  |  | 167 |  |  | — |
Residential real estate |  | 5 |  |  | 1,105 |  |  | 1,099 |
Consumer other |  | 1 |  |  | 1 |  |  | 1 |
Total |  | 10 |  |  | $ | 1,727 |  |  | $ | 1,550 |
|  | Three Months Ended March 31, 2017
(Dollars in thousands) |  | Number of Modifications |  | Pre-Modification Outstanding Recorded Investment |  | Post-Modification Outstanding Recorded Investment
Troubled Debt Restructurings |  |  |  |  |  |  |
Commercial installment |  | 1 |  |  | $ | 80 |  |  | $ | 80 |
Residential real estate |  | 2 |  |  | 575 |  |  | 574 |
Consumer other |  | 1 |  |  | 38 |  |  | 37 |
Total |  | 4 |  |  | $ | 693 |  |  | $ | 691 |

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