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Loans and the Allowance for Loan Losses (Tables) | 9 Months Ended
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Sep. 30, 2018
Receivables [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] | The following table sets forth the composition of the Company’s loan portfolio, including net deferred loan fees, at September 30, 2018 and December 31, 2017:
|  | September 30, |  | December 31,
|  | 2018 |  | 2017
|  | (dollars in thousands)
Commercial |  | $ | 933,169 |  |  | $ | 824,082 |
Commercial real estate |  |  | 2,739,943 |  |  |  | 2,592,909 |
Commercial construction |  |  | 494,206 |  |  |  | 483,216 |
Residential real estate |  |  | 295,948 |  |  |  | 271,795 |
Consumer |  |  | 2,508 |  |  |  | 2,808 |
Gross loans |  |  | 4,465,774 |  |  |  | 4,174,810 |
Net deferred loan fees |  |  | (3,287 | ) |  |  | (3,354 | )
Total loans receivable |  | $ | 4,462,487 |  |  | $ | 4,171,456
Loans held for sale [Table Text Block] | The following table sets forth the composition of the Company’s loans held-for-sale portfolio at September 30, 2018 and December 31, 2017:
|  | September 30, |  | December 31,
|  | 2018 |  | 2017
|  | (dollars in thousands)
Commercial real estate |  | $ | - |  | $ | 24,475
Residential real estate |  |  | 270 |  |  | 370
Total carrying amount |  | $ | 270 |  | $ | 24,845
Activity in the valuation allowance [Table Text Block] | The following table sets forth the composition of the Company’s valuation allowance within the loans held-for-sale portfolio during the three and nine months ended September 30, 2018 and September 30, 2017:
|  | Three Months |  | Three Months
|  | Ended |  | Ended
|  | September 30, |  | September 30,
|  | 2018 |  | 2017
|  | (dollars in thousands)
Balance at July 1, |  | $ | - |  | $ | 12,325 |
Reduction from loans paid off |  |  | - |  |  | (38 | )
Increase in valuation allowance |  |  | - |  |  | 3,000 |
Balance at September 30, |  | $ | - |  | $ | 15,287 |
|  | Nine Months |  | Nine Months
|  | Ended |  | Ended
|  | September 30, |  | September 30,
|  | 2018 |  | 2017
|  | (dollars in thousands)
Balance at January 1, |  | $ | - |  | $ | - |
Reduction from loans paid off |  |  | - |  |  | (38 | )
Increase in valuation allowance |  |  | - |  |  | 15,325 |
Balance at September 30, |  | $ | - |  | $ | 15,287
Loans and Leases Receivable Purchase Credit Impaired Loans [Table Text Block] | The recorded investment of those loans is as follows at September 30, 2018 and December 31, 2017.
|  | September 30, |  | December 31,
|  | 2018 |  | 2017
|  | (dollars in thousands)
Commercial |  | $ | 2,524 |  | $ | 2,683
Loans and Leases Receivable Purchased Loans [Table Text Block] | The following table presents interest income expected to be recognized on the purchased credit-impaired loans and the related activity for the three and nine months ended September 30, 2018 and September 30, 2017:
|  | Three Months |  | Three Months
|  | Ended |  | Ended
|  | September 30, |  | September 30,
|  | 2018 |  | 2017
|  | (dollars in thousands)
Balance at July 1, |  | $ | 1,259 |  |  | $ | 2,496 |
Accretion of income |  |  | (63 | ) |  |  | (180 | )
Balance at September 30, |  | $ | 1,196 |  |  | $ | 2,316 |
|  | Nine Months |  | Nine Months
|  | Ended |  | Ended
|  | September 30, |  | September 30,
|  | 2018 |  | 2017
|  | (dollars in thousands)
Balance at January 1, |  | $ | 1,387 |  |  | $ | 2,860 |
Accretion of income |  |  | (191 | ) |  |  | (544 | )
Balance at September 30, |  | $ | 1,196 |  |  | $ | 2,316
Schedule of Financing Receivables, Non Accrual Status [Table Text Block] | The following table sets forth the composition of the Company’s nonaccrual loans as of September 30, 2018 and December 31, 2017:
|  | September 30, |  | December 31,
|  | 2018 |  | 2017
|  | (dollars in thousands)
Commercial |  | $ | 29,562 |  | $ | 47,363
Commercial real estate |  |  | 15,927 |  |  | 12,757
Commercial construction |  |  | 2,934 |  |  | -
Residential real estate |  |  | 4,592 |  |  | 5,493
Total nonaccrual loans |  | $ | 53,015 |  | $ | 65,613
Financing Receivable Credit Quality Indicators [Table Text Block] | The following table presents information, excluding loans held-for-sale and net deferred loan fees, about the Company’s loan credit quality at September 30, 2018 and December 31, 2017:
|  | September 30, 2018
|  |  |  |  | Special |  |  |  |  |  |  |  |  |
|  | Pass |  | Mention |  | Substandard |  | Doubtful |  | Total
|  | (dollars in thousands)
Commercial (1) |  | $ | 887,024 |  | $ | 12,639 |  | $ | 33,506 |  | $ | - |  | $ | 933,169
Commercial real estate |  |  | 2,699,338 |  |  | 10,651 |  |  | 29,954 |  |  | - |  |  | 2,739,943
Commercial construction |  |  | 481,226 |  |  | 5,458 |  |  | 7,522 |  |  | - |  |  | 494,206
Residential real estate |  |  | 291,223 |  |  | - |  |  | 4,725 |  |  | - |  |  | 295,948
Consumer |  |  | 2,484 |  |  | - |  |  | 24 |  |  | - |  |  | 2,508
Gross loans |  | $ | 4,361,295 |  | $ | 28,748 |  | $ | 75,731 |  | $ | - |  | $ | 4,465,774
|  | December 31, 2017
|  |  |  |  | Special |  |  |  |  |  |  |  |  |
|  | Pass |  | Mention |  | Substandard |  | Doubtful |  | Total
|  | (dollars in thousands)
Commercial |  | $ | 767,020 |  | $ | 3,764 |  | $ | 53,298 |  | $ | - |  | $ | 824,082
Commercial real estate |  |  | 2,534,973 |  |  | 34,335 |  |  | 23,601 |  |  | - |  |  | 2,592,909
Commercial construction |  |  | 475,066 |  |  | 5,521 |  |  | 2,629 |  |  | - |  |  | 483,216
Residential real estate |  |  | 266,163 |  |  | - |  |  | 5,632 |  |  | - |  |  | 271,795
Consumer |  |  | 2,767 |  |  | - |  |  | 41 |  |  | - |  |  | 2,808
Gross loans |  | $ | 4,045,989 |  | $ | 43,620 |  | $ | 85,201 |  | $ | - |  | $ | 4,174,810
(1) |  | Reflects a $17.0 million charge-off related to the taxi medallion loans classified as “substandard”.
Impaired Financing Receivables [Table Text Block] | The following table provides an analysis of the impaired loans by category as of September 30, 2018 and December 31, 2017:
|  | September 30, 2018
|  |  |  |  | Unpaid |  |  |
|  | Recorded |  | Principal |  | Related
|  | Investment |  | Balance |  | Allowance
No related allowance recorded |  | (dollars in thousands)
Commercial |  | $ | 31,471 |  | $ | 92,452 |  |  |
Commercial real estate |  |  | 21,483 |  |  | 21,636 |  |  |
Commercial construction |  |  | 10,428 |  |  | 10,429 |  |  |
Residential real estate |  |  | 2,237 |  |  | 2,533 |  |  |
Consumer |  |  | - |  |  | - |  |  |
Total (no related allowance) |  | $ | 65,619 |  | $ | 127,050 |  |  |
With an allowance recorded |  |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 8,529 |  | $ | 8,529 |  | $ | 709
Residential real estate |  |  | 263 |  |  | 266 |  |  | 32
Total (with allowance) |  | $ | 8,792 |  | $ | 8,795 |  | $ | 741
Total |  |  |  |  |  |  |  |  |
Commercial |  | $ | 31,471 |  | $ | 92,452 |  | $ | -
Commercial real estate |  |  | 30,012 |  |  | 30,165 |  |  | 709
Commercial construction |  |  | 10,428 |  |  | 10,429 |  |  | -
Residential real estate |  |  | 2,500 |  |  | 2,799 |  |  | 32
Consumer |  |  | - |  |  | - |  |  | -
Total |  | $ | 74,411 |  | $ | 135,845 |  | $ | 741
|  | December 31, 2017
|  |  |  |  | Unpaid |  |  |
|  | Recorded |  | Principal |  | Related
|  | Investment |  | Balance |  | Allowance
No related allowance recorded |  | (dollars in thousands)
Commercial |  | $ | 49,761 |  | $ | 101,066 |  |  |
Commercial real estate |  |  | 23,905 |  |  | 23,976 |  |  |
Commercial construction |  |  | 6,662 |  |  | 6,662 |  |  |
Residential real estate |  |  | 3,203 |  |  | 3,442 |  |  |
Consumer |  |  | - |  |  | - |  |  |
Total (no related allowance) |  | $ | 83,531 |  | $ | 135,146 |  |  |
With an allowance recorded |  |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 1,133 |  | $ | 1,133 |  | $ | 39
Total |  |  |  |  |  |  |  |  |
Commercial |  | $ | 49,761 |  | $ | 101,066 |  | $ | -
Commercial real estate |  |  | 25,038 |  |  | 25,109 |  |  | 39
Commercial construction |  |  | 6,662 |  |  | 6,662 |  |  | -
Residential real estate |  |  | 3,203 |  |  | 3,442 |  |  | -
Consumer |  |  | - |  |  | - |  |  | -
Total |  | $ | 84,664 |  | $ | 136,279 |  | $ | 39
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 category as of and for the three and nine months ended September 30, 2018 and 2017:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
|  | 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 (1) |  | $ | 31,769 |  | $ | 36 |  | $ | 3,100 |  | $ | 34 |  | $ | 39,132 |  | $ | 102 |  | $ | 3,149 |  | $ | 115
Commercial real estate |  |  | 21,557 |  |  | 105 |  |  | 19,302 |  | 221 |  |  | 21,714 |  |  | 475 |  |  | 18,813 |  |  | 424
Commercial construction |  |  | 10,297 |  |  | 92 |  |  | 4,285 |  |  | 63 |  |  | 11,718 |  |  | 387 |  |  | 4,273 |  |  | 215
Residential real estate |  |  | 2,249 |  |  | - |  |  | 2,529 |  |  | 2 |  |  | 2,304 |  |  | - |  |  | 2,551 |  |  | 6
Consumer |  |  | - |  |  | - |  |  | 48 |  |  | 1 |  |  | - |  |  | - |  |  | 54 |  |  | 2
Total |  | $ | 65,872 |  | $ | 233 |  | $ | 29,264 |  | $ | 321 |  | $ | 74,868 |  | $ | 964 |  | $ | 28,840 |  | $ | 762
Impaired loans (allowance): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 8,534 |  | $ | 11 |  | $ | 1,645 |  | $ | 2 |  | $ | 8,544 |  | $ | 34 |  | $ | 1,654 |  | $ | 39
Residential real estate |  |  | 264 |  |  | - |  |  | - |  |  | - |  |  | 267 |  |  | - |  |  | - |  |  | -
Total |  | $ | 8,798 |  | $ | 11 |  | $ | 1,645 |  | $ | 2 |  | $ | 8,811 |  | $ | 34 |  | $ | 1,654 |  | $ | 39
Total impaired loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial (1) |  | $ | 31,769 |  | $ | 36 |  | $ | 3,100 |  | $ | 34 |  | $ | 39,132 |  | $ | 102 |  | $ | 3,149 |  | $ | 115
Commercial real estate |  |  | 30,091 |  |  | 116 |  |  | 20,947 |  |  | 223 |  |  | 30,258 |  |  | 509 |  |  | 20,467 |  |  | 463
Commercial construction |  |  | 10,297 |  |  | 92 |  |  | 4,285 |  |  | 63 |  |  | 11,718 |  |  | 387 |  |  | 4,273 |  |  | 215
Residential real estate |  |  | 2,513 |  |  | - |  |  | 2,259 |  |  | 2 |  |  | 2,571 |  |  | - |  |  | 2,551 |  |  | 6
Consumer |  |  | - |  |  | - |  |  | 48 |  |  | 1 |  |  | - |  |  | - |  |  | 54 |  |  | 2
Total |  | $ | 74,670 |  | $ | 244 |  | $ | 30,909 |  | $ | 323 |  | $ | 83,679 |  | $ | 998 |  | $ | 30,494 |  | $ | 801
(1) |  | Reflects the entire taxi medallion portfolio moving back to the loans held-for-investment category from the loans held-for-sale category in November 2017.
Past Due Financing Receivables [Table Text Block] | The following table provides an analysis of the aging of gross loans (excluding loans held-for-sale) that are past due at September 30, 2018 and December 31, 2017 by segment: Aging Analysis
|  | September 30, 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
|  | (dollars in thousands)
Commercial |  | $ | 233 |  | $ | 246 |  | $ | 1,648 |  | $ | 29,562 |  | $ | 31,689 |  | $ | 901,480 |  | $ | 933,169
Commercial real estate |  |  | - |  |  | 3,190 |  |  | - |  |  | 15,927 |  |  | 19,117 |  |  | 2,720,826 |  |  | 2,739,943
Commercial construction |  |  | - |  |  | - |  |  | - |  |  | 2,934 |  |  | 2,934 |  |  | 491,272 |  |  | 494,206
Residential real estate |  |  | 6 |  |  | - |  |  | - |  |  | 4,592 |  |  | 4,598 |  |  | 291,350 |  |  | 295,948
Consumer |  |  | 288 |  |  | - |  |  | - |  |  | - |  |  | 288 |  |  | 2,220 |  |  | 2,508
Total |  | $ | 527 |  | $ | 3,436 |  | $ | 1,648 |  | $ | 53,015 |  | $ | 58,626 |  | $ | 4,407,148 |  | $ | 4,465,774
|  | Dec ember 31, 2017
|  |  |  |  |  |  |  | 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 |  | $ | 1,708 |  | $ | 183 |  | $ | 1,664 |  | $ | 47,363 |  | $ | 50,918 |  | $ | 773,164 |  | $ | 824,082
Commercial real estate |  |  | 545 |  |  | 1,475 |  |  | - |  |  | 12,757 |  |  | 14,777 |  |  | 2,578,132 |  |  | 2,592,909
Commercial construction |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 483,216 |  |  | 483,216
Residential real estate |  |  | 1,578 |  |  | - |  |  | - |  |  | 5,493 |  |  | 7,071 |  |  | 264,724 |  |  | 271,795
Consumer |  |  | 18 |  |  | - |  |  | - |  |  | - |  |  | 18 |  |  | 2,790 |  |  | 2,808
Total |  | $ | 3,849 |  | $ | 1,658 |  | $ | 1,664 |  | $ | 65,613 |  | $ | 72,784 |  | $ | 4,102,026 |  | $ | 4,174,810
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 credit quality, and the related portion of the allowance for loan losses (“ALLL”) that are allocated to each loan portfolio segment:
|  | September 30, 2018
|  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  | (dollars in thousands)
ALLL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | - |  | $ | 709 |  | $ | - |  | $ | 32 |  | $ | - |  | $ | - |  | $ | 741
Collectively evaluated for impairment |  |  | 9,749 |  |  | 16,569 |  |  | 4,790 |  |  | 1,183 |  |  | 3 |  |  | 564 |  |  | 32,858
Acquired portfolio |  |  | 200 |  |  | 950 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 1,150
Acquired with deteriorated credit quality |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | -
Total |  | $ | 9,949 |  | $ | 18,228 |  | $ | 4,790 |  | $ | 1,215 |  | $ | 3 |  | $ | 564 |  | $ | 34,749
Gross loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 31,471 |  | $ | 30,012 |  | $ | 10,428 |  | $ | 2,500 |  | $ | - |  |  |  |  | $ | 74,411
Collectively evaluated for impairment |  |  | 891,514 |  |  | 2,438,638 |  |  | 483,778 |  |  | 247,211 |  |  | 2,123 |  |  |  |  |  | 4,063,264
Acquired portfolio |  |  | 7,660 |  |  | 271,293 |  |  | - |  |  | 46,237 |  |  | 385 |  |  |  |  |  | 325,575
Acquired with deteriorated credit quality |  |  | 2,524 |  |  | - |  |  | - |  |  | - |  |  | - |  |  |  |  |  | 2,524
Total |  | $ | 933,169 |  | $ | 2,739,943 |  | $ | 494,206 |  | $ | 295,948 |  | $ | 2,508 |  |  |  |  | $ | 4,465,774
|  | December 31, 2017
|  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  | (dollars in thousands)
ALLL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | - |  | $ | 39 |  | $ | - |  | $ | - |  | $ | - |  | $ | - |  | $ | 39
Collectively evaluated for impairment |  |  | 8,032 |  |  | 15,472 |  |  | 4,747 |  |  | 1,051 |  |  | 2 |  |  | 605 |  |  | 29,909
Acquired portfolio |  |  | 200 |  |  | 1,600 |  |  | - |  |  | - |  |  | - |  |  | - |  |  | 1,800
Acquired with deteriorated credit quality |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | - |  |  | -
Total |  | $ | 8,232 |  | $ | 17,111 |  | $ | 4,747 |  | $ | 1,051 |  | $ | 2 |  | $ | 605 |  | $ | 31,748
Gross loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 49,761 |  | $ | 25,038 |  | $ | 6,662 |  | $ | 3,203 |  | $ | - |  |  |  |  | $ | 84,664
Collectively evaluated for impairment |  |  | 757,923 |  |  | 2,190,686 |  |  | 476,554 |  |  | 212,350 |  |  | 2,338 |  |  |  |  |  | 3,639,851
Acquired portfolio |  |  | 13,715 |  |  | 377,185 |  |  | - |  |  | 56,242 |  |  | 470 |  |  |  |  |  | 447,612
Acquired with deteriorated credit quality |  |  | 2,683 |  |  | - |  |  | - |  |  | - |  |  | - |  |  |  |  |  | 2,683
Total |  | $ | 824,082 |  | $ | 2,592,909 |  | $ | 483,216 |  | $ | 271,795 |  | $ | 2,808 |  |  |  |  | $ | 4,174,810
Allowance for Credit Losses on Financing Receivables [Table Text Block] | A summary of the activity in the ALLL is as follows:
|  | Three Months Ended September 30, 2018
|  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  | (dollars in thousands)
Balance at June 30, 2018 |  | $ | 8,960 |  | $ | 18,221 |  | $ | 4,812 |  |  | $ | 1,167 |  | $ | 3 |  |  | $ | 431 |  |  | $ | 33,594 |
Charge-offs |  |  | - |  |  | - |  |  | - |  |  |  | - |  |  | (6 | ) |  |  | - |  |  |  | (6 | )
Recoveries |  |  | 56 |  |  | - |  |  | - |  |  |  | - |  |  | 5 |  |  |  | - |  |  |  | 61 |
Provision for loan losses |  |  | 933 |  |  | 7 |  |  | (22 | ) |  |  | 48 |  |  | 1 |  |  |  | 133 |  |  |  | 1,100 |
Balance at September 30, 2018 |  | $ | 9,949 |  | $ | 18,228 |  | $ | 4,790 |  |  | $ | 1,215 |  | $ | 3 |  |  | $ | 564 |  |  | $ | 34,749 |
|  | Three Months Ended September 30, 2017
|  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  | (dollars in thousands)
Balance at June 30, 2017 |  | $ | 7,238 |  | $ | 15,389 |  | $ | 4,241 |  |  | $985 |  | $ | 2 |  |  | $ | 546 |  |  | $ | 28,401 |
Charge-offs |  |  | - |  |  | - |  |  | - |  |  |  | - |  |  | (1 | ) |  |  | - |  |  |  | (1 | )
Recoveries |  |  | 17 |  |  | 2 |  |  | - |  |  |  | - |  |  | 1 |  |  |  | - |  |  |  | 20 |
Provision for loan losses |  |  | 461 |  |  | 1,443 |  |  | (301 | ) |  |  | 67 |  |  | - |  |  |  | (220 | ) |  |  | 1,450 |
Balance at September 30, 2017 |  | $ | 7,716 |  | $ | 16,834 |  | $ | 3,940 |  |  | $ | 1,052 |  | $ | 2 |  |  | $ | 326 |  |  | $ | 29,870 |
|  | Nine Months Ended September 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 | ) |  |  | (7 | ) |  |  | - |  |  |  | (17,091 | )
Recoveries |  |  | 87 |  |  |  | - |  |  | - |  |  | - |  |  |  | 5 |  |  |  | - |  |  |  | 92 |
Provision |  |  | 18,695 |  |  |  | 1,116 |  |  | 43 |  |  | 183 |  |  |  | 4 |  |  |  | (41 | ) |  |  | 20,000 |
Balance at September 30, 2018 |  | $ | 9,949 |  |  | $ | 18,228 |  | $ | 4,790 |  | $ | 1,215 |  |  | $ | 3 |  |  | $ | 564 |  |  | $ | 34,749 |
|  | Nine Months Ended September 30, 2017
|  |  |  |  | Commercial |  | Commercial |  | Residential |  |  |  |  |  |  |  |  |  |
|  | Commercial |  | real estate |  | construction |  | real estate |  | Consumer |  | Unallocated |  | Total
|  | (dollars in thousands)
Balance at December 31, 2016 |  | $ | 6,632 |  | $ | 12,583 |  |  | $ | 4,789 |  |  | $ | 958 |  | $ | 3 |  |  | $ | 779 |  |  | $ | 25,744 |
Charge-offs |  |  | - |  |  | (71 | ) |  |  | - |  |  |  | - |  |  | (12 | ) |  |  | - |  |  |  | (83 | )
Recoveries |  |  | 158 |  |  | 50 |  |  |  | - |  |  |  | - |  |  | 1 |  |  |  | - |  |  |  | 209 |
Provision for loan losses |  |  | 926 |  |  | 4,272 |  |  |  | (849 | ) |  |  | 94 |  |  | 10 |  |  |  | (453 | ) |  |  | 4,000 |
Balance at September 30, 2017 |  | $ | 7,716 |  | $ | 16,834 |  |  | $ | 3,940 |  |  | $ | 1,052 |  | $ | 2 |  |  | $ | 326 |  |  | $ | 29,870
Allowance for Loan and Lease Losses [Table Text Block] | The following table presents a rollforward of TDRs and the related changes to the allowance for loan losses (“ALLL”) that occurred for the periods presented:
|  | Nine Months Ended |  | Year Ended
|  | September 30, 2018 |  | December 31, 2017
|  | (dollars in thousands)
|  | Recorded |  |  |  |  |  | Recorded |  |  |
|  | Investment |  | ALLL |  | Investment |  | ALLL
TDRs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | 20,518 |  |  | $ | - |  | $ | 13,818 |  |  | $ | -
Net additions |  |  | 18,913 |  |  |  | 11 |  |  | 10,378 |  |  |  | -
Payoffs/paydowns |  |  | (7,094 | ) |  |  | - |  |  | (3,098 | ) |  |  | -
Transfers |  |  | - |  |  |  | - |  |  | (580 | ) |  |  | -
Ending balance |  | $ | 32,337 |  |  | $ | 11 |  | $ | 20,518 |  |  | $ | -
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 nine months ended September 30, 2018:
|  |  |  | Pre-Modification |  | Post-Modification
|  |  |  | Outstanding |  | Outstanding
|  | Number of |  | Recorded |  | Recorded
|  | Loans |  | Investment |  | Investment
TDRs |  | (dollars in thousands)
Commercial |  | 31 |  | $ | 15,737 |  | $ | 15,737
Commercial real estate |  | 2 |  |  | 209 |  |  | 209
Commercial construction |  | 2 |  |  | 1,839 |  |  | 1,839
Residential real estate |  | 2 |  |  | 454 |  |  | 454
Total |  | 37 |  | $ | 18,239 |  | $ | 18,239
The following table presents loans by segment modified as troubled debt restructurings that occurred during the nine months ended September 30, 2017:
|  |  |  | Pre-Modification |  | Post-Modification
|  |  |  | Outstanding |  | Outstanding
|  | Number of |  | Recorded |  | Recorded
|  | Loans |  | Investment |  | Investment
TDRs |  | (dollars in thousands)
Commercial real estate |  | 2 |  | $ | 3,042 |  | $ | 3,042
Commercial construction |  | 1 |  |  | 2,589 |  |  | 2,589
Residential real estate |  | 1 |  |  | 17 |  |  | 17
Total |  | 4 |  | $ | 5,648 |  | $ | 5,648

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