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Loans and the Allowance for Loan Losses (Tables) | 6 Months Ended
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Jun. 30, 2019
Receivables [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] | Loans receivable - The following table sets forth the composition of the Company’s loan portfolio, including net deferred loan fees, at June 30, 2019 and December 31, 2018:
|  | June 30, |  | December 31,
|  | 2019 |  | 2018
|  | (dollars in thousands)
Commercial |  | $ | 1,052,559 |  |  | $ | 988,758 |
Commercial real estate |  |  | 3,111,274 |  |  |  | 2,778,167 |
Commercial construction |  |  | 602,213 |  |  |  | 465,389 |
Residential real estate |  |  | 326,661 |  |  |  | 309,991 |
Consumer |  |  | 2,041 |  |  |  | 2,594 |
Gross loans |  |  | 5,094,748 |  |  |  | 4,544,899 |
Net deferred loan fees |  |  | (4,256 | ) |  |  | (3,807 | )
Total loans receivable |  | $ | 5,090,492 |  |  | $ | 4,541,092 |
Loans and Leases Receivable Purchase Credit Impaired Loans [Table Text Block] | Purchased Credit-Impaired Loans - The Company holds purchased loans for which there was, at their acquisition date, evidence of deterioration of credit quality since their origination and it was probable, at acquisition, that all contractually required payments would not be collected. The recorded investment in those loans is as follows at June 30, 2019 and December 31, 2018.
|  | June 30, |  | December 31,
|  | 2019 |  | 2018
|  | (dollars in thousands)
Commercial |  | $ | 5,399 |  | $ | 2,509
Commercial real estate |  |  | 1,305 |  |  | -
|  | $ | 6,704 |  | $ | 2,509
Loans and Leases Receivable Purchased Loans [Table Text Block] | The following table presents the accretable yield, or income expected to be collected, on the purchased credit-impaired loans for three and six months ended June 30, 2019 and June 30, 2018:
|  | Three Months |  | Three Months
|  | Ended |  | Ended
|  | June 30, 2019 |  | June 30, 2018
|  | (dollars in thousands)
Balance at April 1 |  | $ | 2,213 |  |  | $ | 1,322 |
Accretion of income |  |  | (575 | ) |  |  | (63 | )
Balance at June 30 |  | $ | 1,638 |  |  | $ | 1,259 |
|  | Six Months |  | Six Months
|  | Ended |  | Ended
|  | June 30, 2019 |  | June 30, 2018
|  | (dollars in thousands)
Balance at January 1 |  | $ | 1,134 |  |  | $ | 1,387 |
New loans purchased |  |  | 1,286 |  |  |  |  |
Accretion of income |  |  | (782 | ) |  |  | (128 | )
Balance at June 30 |  | $ | 1,638 |  |  | $ | 1,259 |
Schedule of Financing Receivables, Non Accrual Status [Table Text Block] | Loans Receivable on Nonaccrual Status - The following tables present nonaccrual loans included in loans receivable by loan class as of June 30, 2019 and December 31, 2018:
|  | June 30, |  | December 31,
|  | 2019 |  | 2018
|  | (dollars in thousands)
Commercial |  | $ | 28,433 |  | $ | 29,340
Commercial real estate |  |  | 12,686 |  |  | 15,135
Commercial construction |  |  | 3,579 |  |  | 2,934
Residential real estate |  |  | 5,219 |  |  | 4,446
Total nonaccrual loans |  | $ | 49,917 |  | $ | 51,855
Financing Receivable Credit Quality Indicators [Table Text Block] |
|  | June 30, 2019
|  |  |  |  | Special |  |  |  |  |  |  |  |  |
|  | Pass |  | Mention |  | Substandard |  | Doubtful |  | Total
|  | (dollars in thousands)
Commercial |  | $ | 997,503 |  | $ | 19,269 |  | $ | 35,787 |  | $ | - |  | $ | 1,052,559
Commercial real estate |  |  | 3,084,014 |  |  | 7,622 |  |  | 19,638 |  |  | - |  |  | 3,111,274
Commercial construction |  |  | 589,165 |  |  | 4,106 |  |  | 8,942 |  |  | - |  |  | 602,213
Residential real estate |  |  | 321,316 |  |  | - |  |  | 5,345 |  |  | - |  |  | 326,661
Consumer |  |  | 2,034 |  |  | - |  |  | 7 |  |  | - |  |  | 2,041
Gross loans |  | $ | 4,994,032 |  | $ | 30,997 |  | $ | 69,719 |  | $ | - |  | $ | 5,094,748
|  | December 31, 2018
|  |  |  |  | Special |  |  |  |  |  |  |  |  |
|  | Pass |  | Mention |  | Substandard |  | Doubtful |  | Total
|  | (dollars in thousands)
Commercial |  | $ | 951,610 |  | $ | 3,371 |  | $ | 33,777 |  | $ | - |  | $ | 988,758
Commercial real estate |  |  | 2,742,989 |  |  | 12,574 |  |  | 22,604 |  |  | - |  |  | 2,778,167
Commercial construction |  |  | 453,598 |  |  | 5,515 |  |  | 6,276 |  |  | - |  |  | 465,389
Residential real estate |  |  | 305,414 |  |  | - |  |  | 4,577 |  |  | - |  |  | 309,991
Consumer |  |  | 2,576 |  |  | - |  |  | 18 |  |  | - |  |  | 2,594
Gross loans |  | $ | 4,456,187 |  | $ | 21,460 |  | $ | 67,252 |  | $ | - |  | $ | 4,544,899
Impaired Financing Receivables [Table Text Block] | The following table provides an analysis of the impaired loans by segment as of June 30, 2019 and December 31, 2018:
|  | June 30, 2019
|  | Unpaid
|  | Recorded |  | Principal |  | Related
|  | Investment |  | Balance |  | Allowance
No related allowance recorded |  | (dollars in thousands)
Commercial |  | $ | 32,559 |  | $ | 79,328 |  |  |
Commercial real estate |  |  | 17,162 |  |  | 17,317 |  |  |
Commercial construction |  |  | 6,047 |  |  | 6,047 |  |  |
Residential real estate |  |  | 3,175 |  |  | 3,519 |  |  |
Total (no related allowance) |  | $ | 58,943 |  | $ | 106,211 |  |  |
With an allowance recorded |  |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 393 |  | $ | 393 |  | $ | 29
Commercial construction |  |  | 2,894 |  |  | 2,895 |  |  | 162
Residential real estate |  |  | 253 |  |  | 265 |  |  | 22
Total (with allowance) |  | $ | 3,540 |  | $ | 3,553 |  | $ | 213
Total |  |  |  |  |  |  |  |  |
Commercial |  | $ | 32,559 |  | $ | 79,328 |  | $ | -
Commercial real estate |  |  | 17,555 |  |  | 17,710 |  |  | 29
Commercial construction |  |  | 8,941 |  |  | 8,942 |  |  | 162
Residential real estate |  |  | 3,428 |  |  | 3,784 |  |  | 22
Total |  | $ | 62,483 |  | $ | 109,764 |  | $ | 213
|  | December 31, 2018
|  |  |  |  | Unpaid |  |  |
|  | Recorded |  | Principal |  | Related
|  | Investment |  | Balance |  | Allowance
No related allowance recorded |  | (dollars in thousands)
Commercial |  | $ | 29,896 |  | $ | 83,596 |  |  |
Commercial real estate |  |  | 16,839 |  |  | 17,935 |  |  |
Commercial construction |  |  | 9,240 |  |  | 9,240 |  |  |
Residential real estate |  |  | 2,209 |  |  | 2,521 |  |  |
Total (no related allowance) |  | $ | 58,184 |  | $ | 113,292 |  |  |
With an allowance recorded |  |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 1,488 |  | $ | 1,488 |  | $ | 7
Residential real estate |  |  | 260 |  |  | 266 |  |  | 29
|  | $ | 1,748 |  | $ | 1,754 |  | $ | 36
Total |  |  |  |  |  |  |  |  |
Commercial |  | $ | 29,896 |  | $ | 83,596 |  | $ | -
Commercial real estate |  |  | 18,327 |  |  | 19,423 |  |  | 7
Commercial construction |  |  | 9,240 |  |  | 9,240 |  |  | -
Residential real estate |  |  | 2,469 |  |  | 2,787 |  |  | 29
Total |  | $ | 59,932 |  | $ | 115,046 |  | $ | 36
Schedule of Average Balance and Interest Income Recognized on Impaired Loans [Table Text Block] | The following table provides an analysis related to the average recorded investment and interest income recognized on impaired loans by segment as of and for the three and six months ended June 30, 2019 and 2018:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
|  | Average |  | Interest |  | Average |  | Interest |  | Average |  | Interest |  | Average |  | Interest
|  | Recorded |  | Income |  | Recorded |  | Income |  | Recorded |  | Income |  | Recorded |  | Income
|  | Investment |  | Recognized |  | Investment |  | Recognized |  | Investment |  | Recognized |  | Investment |  | Recognized
|  | (dollars in thousands)
Impaired loans (no allowance) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 33,663 |  | $ | 82 |  | $ | 38,770 |  | $ | 35 |  | $ | 33,066 |  | $ | 164 |  | $ | 42,056 |  | $ | 66
Commercial real estate |  |  | 17,205 |  |  | 68 |  |  | 23,422 |  |  | 127 |  |  | 17,170 |  |  | 143 |  |  | 23,504 |  |  | 370
Commercial construction |  |  | 6,048 |  |  | 25 |  |  | 9,225 |  |  | 176 |  |  | 6,049 |  |  | 80 |  |  | 9,845 |  |  | 295
Residential real estate |  |  | 3,198 |  |  | - |  |  | 2,569 |  |  | - |  |  | 3,195 |  |  | - |  |  | 2,599 |  |  | -
Total |  | $ | 60,114 |  | $ | 175 |  | $ | 73,986 |  | $ | 338 |  | $ | 59,480 |  | $ | 387 |  | $ | 78,004 |  | $ | 731
Impaired loans (allowance): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 393 |  | $ | - |  | $ | 8,544 |  | $ | 11 |  | $ | 393 |  | $ | - |  | $ | 8,548 |  | $ | 23
Commercial construction |  |  | 2,850 |  |  | 42 |  |  | - |  |  | - |  |  | 2,818 |  |  | 85 |  |  | - |  |  | -
Residential real estate |  |  | 255 |  |  | - |  |  | - |  |  | - |  |  | 256 |  |  | - |  |  | - |  |  | -
Total |  | $ | 3,498 |  | $ | 42 |  | $ | 8,544 |  | $ | 11 |  | $ | 3,467 |  | $ | 85 |  | $ | 8,548 |  | $ | 23
Total impaired loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 33,663 |  | $ | 82 |  | $ | 38,770 |  | $ | 35 |  | $ | 33,066 |  | $ | 164 |  | $ | 42,056 |  | $ | 66
Commercial real estate |  |  | 17,598 |  |  | 68 |  |  | 31,966 |  |  | 138 |  |  | 17,563 |  |  | 143 |  |  | 32,052 |  |  | 393
Commercial construction |  |  | 8,898 |  |  | 67 |  |  | 9,225 |  |  | 176 |  |  | 8,867 |  |  | 165 |  |  | 9,845 |  |  | 295
Residential mortgage |  |  | 3,453 |  |  | - |  |  | 2,569 |  |  | - |  |  | 3,451 |  |  | - |  |  | 2,599 |  |  | -
Total |  | $ | 63,612 |  | $ | 217 |  | $ | 82,530 |  | $ | 349 |  | $ | 62,947 |  | $ | 472 |  | $ | 86,552 |  | $ | 754
Past Due Financing Receivables [Table Text Block] | Aging Analysis - The following table provides an analysis of the aging of the loans by class, excluding net deferred fees, that are past due at June 30, 2019 and December 31, 2018:
|  | June 30, 2019
|  |  |  |  |  |  |  | 90 Days or |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  | Greater Past |  |  |  |  | Total Past |  |  |  |  |  |
|  | 30-59 Days |  | 60-89 Days |  | Due and Still |  |  |  |  | Due and |  |  |  |  |  |
|  | Past Due |  | Past Due |  | Accruing |  | Nonaccrual |  | Nonaccrual |  | Current |  | Gross Loans
|  | (dollars in thousands)
Commercial |  | $ | 1,130 |  | $ | 3,035 |  | $ | 3,006 |  | $ | 28,433 |  | $ | 35,604 |  | $ | 1,016,955 |  | $ | 1,052,559
Commercial real estate |  |  | - |  |  | 1,148 |  |  | - |  |  | 12,686 |  |  | 13,834 |  |  | 3,097,440 |  |  | 3,111,274
Commercial construction |  |  | - |  |  | 3,530 |  |  | - |  |  | 3,579 |  |  | 7,109 |  |  | 595,104 |  |  | 602,213
Residential real estate |  |  | 681 |  |  | - |  |  | - |  |  | 5,219 |  |  | 5,900 |  |  | 320,761 |  |  | 326,661
Consumer |  |  | 3 |  |  | 20 |  |  | - |  |  | - |  |  | 23 |  |  | 2,018 |  |  | 2,041
Total |  | $ | 1,814 |  | $ | 7,733 |  | $ | 3,006 |  | $ | 49,917 |  | $ | 62,470 |  | $ | 5,032,278 |  | $ | 5,094,748
The amount reported 90 days or greater past due and still accruing as of June 30, 2019 are comprised of PCI loans, net of their fair value marks, which are accreting income per their valuation at date of acquisition.
|  | December 31, 2018
|  |  |  |  |  |  |  | 90 Days or |  |  |  |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  | Greater Past |  |  |  |  | Total Past |  |  |  |  |  |
|  | 30-59 Days |  | 60-89 Days |  | Due and Still |  |  |  |  | Due and |  |  |  |  |  |
|  | Past Due |  | Past Due |  | Accruing |  | Nonaccrual |  | Nonaccrual |  | Current |  | Gross Loans
Commercial |  | $ | 1,673 |  | $ | - |  | $ | 1,647 |  | $ | 29,340 |  | $ | 32,660 |  | $ | 956,098 |  | $ | 988,758
Commercial real estate |  |  | 6,162 |  |  | 1,840 |  |  | - |  |  | 15,135 |  |  | 23,137 |  |  | 2,755,030 |  |  | 2,778,167
Commercial construction |  |  | 2,496 |  |  | 564 |  |  | - |  |  | 2,934 |  |  | 5,994 |  |  | 459,395 |  |  | 465,389
Residential real estate |  |  | 3,455 |  |  | 119 |  |  | - |  |  | 4,446 |  |  | 8,020 |  |  | 301,971 |  |  | 309,991
Consumer |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 2,594 |  |  | 2,594
Total |  | $ | 13,786 |  | $ | 2,523 |  | $ | 1,647 |  | $ | 51,855 |  | $ | 69,811 |  | $ | 4,475,088 |  | $ | 4,544,899
Schedule of Recorded Investment in Financing Receivables [Table Text Block] | The following tables detail, at the period-end presented, the amount of gross loans (excluding loans held-for-sale) that are evaluated individually, and collectively, for impairment, those acquired with deteriorated quality, and the related portion of the allowance for loan losses that are allocated to each loan portfolio segment:
|  | June 30, 2019
|  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  | (dollars in thousands)
ALLL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | - |  | $ | 29 |  | $ | 162 |  | $ | 22 |  | $ | - |  | $ | - |  | $ | 213
Collectively evaluated for impairment |  |  | 8,521 |  |  | 20,456 |  |  | 5,380 |  |  | 1,186 |  |  | 2 |  |  | 740 |  |  | 36,285
Acquired portfolio |  |  | 200 |  |  | 1,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 1,200
Acquired with deteriorated credit quality |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | -
Total |  | $ | 8,721 |  | $ | 21,485 |  | $ | 5,542 |  | $ | 1,208 |  | $ | 2 |  | $ | 740 |  | $ | 37,698
Gross loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 32,559 |  | $ | 17,555 |  | $ | 8,941 |  | $ | 3,428 |  | $ | - |  |  |  |  | $ | 62,483
Collectively evaluated for impairment |  |  | 901,858 |  |  | 2,694,372 |  |  | 552,712 |  |  | 277,490 |  |  | 1,716 |  |  |  |  |  | 4,428,148
Acquired portfolio |  |  | 112,743 |  |  | 398,042 |  |  | 40,560 |  |  | 45,743 |  |  | 325 |  |  |  |  |  | 597,413
Acquired with deteriorated credit quality |  |  | 5,399 |  |  | 1,305 |  |  | - |  |  | - |  |  | - |  |  |  |  |  | 6,704
Total |  | $ | 1,052,559 |  | $ | 3,111,274 |  | $ | 602,213 |  | $ | 326,661 |  | $ | 2,041 |  |  |  |  | $ | 5,094,748
|  | Decem ber 31, 2018
|  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  | (dollars in thousands)
Allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | - |  | $ | 7 |  | $ | - |  | $ | 29 |  | $ | - |  | $ | - |  | $ | 36
Collectively evaluated for impairment |  |  | 9,675 |  |  | 17,840 |  |  | 4,519 |  |  | 1,237 |  |  | 2 |  |  | 445 |  |  | 33,718
Acquired portfolio |  |  | 200 |  |  | 1,000 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 1,200
Acquired with deteriorated credit quality |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | -
Total |  | $ | 9,875 |  | $ | 18,847 |  | $ | 4,519 |  | $ | 1,266 |  | $ | 2 |  | $ | 445 |  | $ | 34,954
Gross loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 29,896 |  | $ | 18,327 |  | $ | 9,240 |  | $ | 2,469 |  | $ | - |  |  |  |  | $ | 59,932
Collectively evaluated for impairment |  |  | 949,129 |  |  | 2,500,132 |  |  | 456,149 |  |  | 263,449 |  |  | 2,484 |  |  |  |  |  | 4,171,343
Acquired portfolio |  |  | 7,224 |  |  | 259,708 |  |  | - |  |  | 44,073 |  |  | 110 |  |  |  |  |  | 311,115
Acquired with deteriorated credit quality |  |  | 2,509 |  |  | - |  |  | - |  |  | - |  |  | - |  |  |  |  |  | 2,509
Total |  | $ | 988,758 |  | $ | 2,778,167 |  | $ | 465,389 |  | $ | 309,991 |  | $ | 2,594 |  |  |  |  | $ | 4,544,899
Allowance for Credit Losses on Financing Receivables [Table Text Block] | The Company’s allowance for loan losses is analyzed quarterly. Many factors are considered, including growth in the portfolio, delinquencies, nonaccrual loan levels, and other factors inherent in the extension of credit. There have been no material changes to the allowance for loan losses (“ALLL”) methodology as disclosed in the Company’s Annual Report on Form 10-K for the year ended December 31, 2018. A summary of the activity in the ALLL is as follows:
|  | Three Months Ended June 30, 2019
|  |  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  | (dollars in thousands)
Balance at March 31, 2019 |  | $ | 8,660 |  |  | $ | 21,561 |  |  | $ | 4,982 |  | $ | 1,166 |  | $ | 1 |  | $ | 488 |  | $ | 36,858 |
Charge-offs |  |  | - |  |  |  | (406 | ) |  |  | - |  |  | - |  |  | - |  |  | - |  |  | (406 | )
Recoveries |  |  | 115 |  |  |  | 30 |  |  |  | - |  |  | 1 |  |  | - |  |  | - |  |  | 146 |
Provision |  |  | (54 | ) |  |  | 300 |  |  |  | 560 |  |  | 41 |  |  | 1 |  |  | 252 |  |  | 1,100 |
Balance at June 30, 2019 |  | $ | 8,721 |  |  | $ | 21,485 |  |  | $ | 5,542 |  | $ | 1,208 |  | $ | 2 |  | $ | 740 |  | $ | 37,698 |
|  | Three Months Ended June 30, 2018
|  |  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  | (dollars in thousands)
Balance at March 31, 2018 |  | $ | 8,550 |  |  | $ | 17,435 |  | $ | 4,772 |  | $ | 1,109 |  | $ | 2 |  |  | $ | 661 |  |  | $ | 32,529 |
Charge-offs |  |  | (46 | ) |  |  | - |  |  | - |  |  | - |  |  | (1 | ) |  |  | - |  |  |  | (47 | )
Recoveries |  |  | 12 |  |  |  | - |  |  | - |  |  | - |  |  | - |  |  |  | - |  |  |  | 12 |
Provision for loan losses |  |  | 444 |  |  |  | 786 |  |  | 40 |  |  | 58 |  |  | 2 |  |  |  | (230 | ) |  |  | 1,100 |
Balance at June 30, 2018 |  | $ | 8,960 |  |  | $ | 18,221 |  | $ | 4,812 |  | $ | 1,167 |  | $ | 3 |  |  | $ | 431 |  |  | $ | 33,594 |
|  | Six Months Ended June 30, 2019
|  |  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  |  |  |  |  | (dollars in thousands) |  |  |  |
Balance at December 31, 2018 |  | $ | 9,875 |  |  | $ | 18,847 |  |  | $ | 4,519 |  | $ | 1,266 |  |  | $ | 2 |  |  | $ | 445 |  | $ | 34,954 |
Charge-offs |  |  | - |  |  |  | (3,082 | ) |  |  | - |  |  | - |  |  |  | - |  |  |  | - |  |  | (3,082 | )
Recoveries |  |  | 186 |  |  |  | 30 |  |  |  | - |  |  | 3 |  |  |  | 7 |  |  |  | - |  |  | 226 |
Provision |  |  | (1,340 | ) |  |  | 5,690 |  |  |  | 1,023 |  |  | (61 | ) |  |  | (7 | ) |  |  | 295 |  |  | 5,600 |
Balance at June 30, 2019 |  | $ | 8,721 |  |  | $ | 21,485 |  |  | $ | 5,542 |  | $ | 1,208 |  |  | $ | 2 |  |  | $ | 740 |  | $ | 37,698 |
|  | Six Months Ended June 30, 2018
|  |  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  |  |  |  |  |  |  |  | (dollars in thousands) |  |  |  |  |  |  |  |
Balance at December 31, 2017 |  | $ | 8,233 |  |  | $ | 17,112 |  | $ | 4,747 |  | $ | 1,050 |  |  | $ | 1 |  |  | $ | 605 |  |  | $ | 31,748 |
Charge-offs |  |  | (17,066 | ) |  |  | - |  |  | - |  |  | (18 | ) |  |  | (1 | ) |  |  | - |  |  |  | (17,085 | )
Recoveries |  |  | 31 |  |  |  | - |  |  | - |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 31 |
Provision |  |  | 17,762 |  |  |  | 1,109 |  |  | 65 |  |  | 135 |  |  |  | 3 |  |  |  | (174 | ) |  |  | 18,900 |
Balance at June 30, 2018 |  | $ | 8,960 |  |  | $ | 18,221 |  | $ | 4,812 |  | $ | 1,167 |  |  | $ | 3 |  |  | $ | 431 |  |  | $ | 33,594 |
Schedule of Debtor Troubled Debt Restructuring, Current Period [Table Text Block] | The following table presents loans by class modified as TDRs that occurred during the six months ended June 30, 2019:
|  |  |  | Pre-Modification |  | Post-Modification
|  |  |  | Outstanding |  | Outstanding
|  | Number of |  | Recorded |  | Recorded
|  | Loans |  | Investment |  | Investment
Troubled debt restructurings: |  | (dollars in thousands)
Commercial |  | 4 |  | $ | 4,186 |  | $ | 4,186
Commercial real estate |  | 2 |  |  | 2,635 |  |  | 2,635
Commercial construction |  | 2 |  |  | 2,101 |  |  | 2,101
Total |  | 8 |  | $ | 8,922 |  | $ | 8,922
These eight loan modifications included interest rate reductions and maturity extensions. The following table presents loans by class modified as TDRs that occurred during the six months ended June 30, 2018:
|  |  |  | Pre-Modification |  | Post-Modification
|  |  |  | Outstanding |  | Outstanding
|  | Number of |  | Recorded |  | Recorded
|  | Loans |  | Investment |  | Investment
Troubled debt restructurings: |  | (dollars in thousands)
Commercial |  | 30 |  | $ | 15,613 |  | $ | 15,613
Commercial real estate |  | 1 |  |  | 60 |  |  | 60
Commercial construction |  | 2 |  |  | 1,839 |  |  | 1,839
Residential |  | 2 |  |  | 454 |  |  | 454
Total |  | 35 |  | $ | 17,966 |  | $ | 17,966

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