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Portfolio loans and allowance for credit losses (Tables) | 12 Months Ended
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Dec. 31, 2020
Portfolio loans |
Distribution of portfolio loans | Distributions of portfolio loans were as follows (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31,
​ |  | 2020 |  | 2019
Commercial | ​ | $ | 2,014,576 | ​ | $ | 1,748,368
Commercial real estate | ​ | ​ | 2,892,535 | ​ | ​ | 2,793,417
Real estate construction | ​ | ​ | 461,786 | ​ | ​ | 401,861
Retail real estate | ​ | ​ | 1,407,852 | ​ | ​ | 1,693,769
Retail other | ​ | ​ | 37,428 | ​ | ​ | 49,834
Portfolio loans | ​ | $ | 6,814,177 | ​ | $ | 6,687,249
​ | ​ | ​ | ​ | ​ | ​ | ​
Allowance | ​ | ​ | (101,048) | ​ | ​ | (53,748)
Portfolio loans, net | ​ | $ | 6,713,129 | ​ | $ | 6,633,501
Summary of risk grades segregated by category of portfolio loans (excluding accretable purchase accounting adjustments and clearings) | The following table is a summary of risk grades segregated by category of portfolio loans. December 31, 2020, includes purchase discounts and clearings in the pass rating. December 31, 2019, excludes purchase discounts and clearings (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
​ |  | ​ |  | ​ |  | Special |  | ​ |  | Substandard
​ |  | Pass |  | Watch |  | Mention |  | Substandard |  | Non-accrual
Commercial | ​ | $ | 1,768,755 | ​ | $ | 136,948 | ​ | $ | 72,447 | ​ | $ | 27,903 | ​ | $ | 8,523
Commercial real estate | ​ |  | 2,393,372 | ​ |  | 383,277 | ​ |  | 75,486 | ​ |  | 34,897 | ​ |  | 5,503
Real estate construction | ​ |  | 434,681 | ​ |  | 24,481 | ​ |  | 77 | ​ |  | 2,546 | ​ |  | 1
Retail real estate | ​ |  | 1,382,616 | ​ |  | 10,264 | ​ |  | 2,471 | ​ |  | 3,702 | ​ |  | 8,799
Retail other | ​ |  | 37,324 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 104
Portfolio loans | ​ | $ | 6,016,748 | ​ | $ | 554,970 | ​ | $ | 150,481 | ​ | $ | 69,048 | ​ | $ | 22,930
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2019
​ |  | ​ |  | ​ |  | Special |  | ​ |  | Substandard
​ |  | Pass |  | Watch |  | Mention |  | Substandard |  | Non-accrual
Commercial | ​ | $ | 1,458,416 | ​ | $ | 172,526 | ​ | $ | 66,337 | ​ | $ | 41,273 | ​ | $ | 9,096
Commercial real estate | ​ |  | 2,477,398 | ​ |  | 186,963 | ​ |  | 105,487 | ​ |  | 26,204 | ​ |  | 9,178
Real estate construction | ​ |  | 351,923 | ​ |  | 45,262 | ​ |  | 3,928 | ​ |  | 737 | ​ |  | 630
Retail real estate | ​ |  | 1,661,691 | ​ |  | 9,125 | ​ |  | 5,355 | ​ |  | 7,001 | ​ |  | 8,935
Retail other | ​ |  | 47,698 | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 57
Portfolio loans | ​ | $ | 5,997,126 | ​ | $ | 413,876 | ​ | $ | 181,107 | ​ | $ | 75,215 | ​ | $ | 27,896
Risk grades of portfolio loans, further sorted by origination | Risk grades of portfolio loans, further sorted by origination year at December 31, 2020 is as follows (dollars in thousand): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Term Loans Amortized Cost Basis by Origination Year | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |  | ​ |  | ​ |  | ​ | ​ | ​ | ​ | ​ | ​ | Revolving | ​ | ​ | ​
As of December 31, 2020 |  | 2020 |  | 2019 |  | 2018 |  | 2017 |  | 2016 | ​ | ​ | Prior | ​ | ​ | loans | ​ | ​ | Total
Commercial: |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Risk rating | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Pass | ​ | $ | 812,536 | ​ | $ | 158,307 | ​ | $ | 107,565 | ​ | $ | 93,190 | ​ | $ | 61,847 | ​ | $ | 79,970 | ​ | $ | 455,340 | ​ | $ | 1,768,755
Watch | ​ | ​ | 16,544 | ​ | ​ | 22,247 | ​ | ​ | 14,954 | ​ | ​ | 13,724 | ​ | ​ | 2,577 | ​ | ​ | 10,943 | ​ | ​ | 55,959 | ​ | ​ | 136,948
Special Mention | ​ | ​ | 6,402 | ​ | ​ | 2,671 | ​ | ​ | 2,069 | ​ | ​ | 7,164 | ​ | ​ | 6,763 | ​ | ​ | 13,733 | ​ | ​ | 33,645 | ​ | ​ | 72,447
Substandard | ​ | ​ | 7,772 | ​ | ​ | 3,791 | ​ | ​ | 2,371 | ​ | ​ | 1,939 | ​ | ​ | 819 | ​ | ​ | 1,233 | ​ | ​ | 9,978 | ​ | ​ | 27,903
Substandard non-accrual | ​ | ​ | 150 | ​ | ​ | 3,045 | ​ | ​ | 451 | ​ | ​ | 2,168 | ​ | ​ | 641 | ​ | ​ | 68 | ​ | ​ | 2,000 | ​ | ​ | 8,523
Total commercial | ​ | $ | 843,404 | ​ | $ | 190,061 | ​ | $ | 127,410 | ​ | $ | 118,185 | ​ | $ | 72,647 | ​ | $ | 105,947 | ​ | $ | 556,922 | ​ | $ | 2,014,576
Commercial real estate: |  |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Risk rating | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Pass | ​ | $ | 717,559 | ​ | $ | 503,977 | ​ | $ | 360,573 | ​ | $ | 384,843 | ​ | $ | 180,555 | ​ | $ | 227,068 | ​ | $ | 18,797 | ​ | $ | 2,393,372
Watch | ​ | ​ | 88,297 | ​ | ​ | 110,526 | ​ | ​ | 90,412 | ​ | ​ | 33,734 | ​ | ​ | 32,887 | ​ | ​ | 27,023 | ​ | ​ | 398 | ​ | ​ | 383,277
Special Mention | ​ | ​ | 16,490 | ​ | ​ | 8,858 | ​ | ​ | 10,490 | ​ | ​ | 10,505 | ​ | ​ | 7,102 | ​ | ​ | 21,808 | ​ | ​ | 233 | ​ | ​ | 75,486
Substandard | ​ | ​ | 17,445 | ​ | ​ | 4,166 | ​ | ​ | 1,491 | ​ | ​ | 7,812 | ​ | ​ | 2,111 | ​ | ​ | 1,377 | ​ | ​ | 495 | ​ | ​ | 34,897
Substandard non-accrual | ​ | ​ | 1,091 | ​ | ​ | 776 | ​ | ​ | 821 | ​ | ​ | 882 | ​ | ​ | 286 | ​ | ​ | 1,647 | ​ | ​ | — | ​ | ​ | 5,503
Total commercial real estate | ​ | $ | 840,882 | ​ | $ | 628,303 | ​ | $ | 463,787 | ​ | $ | 437,776 | ​ | $ | 222,941 | ​ | $ | 278,923 | ​ | $ | 19,923 | ​ | $ | 2,892,535
Real estate construction: |  |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Risk rating | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Pass | ​ | $ | 179,232 | ​ | $ | 171,663 | ​ | $ | 64,025 | ​ | $ | 1,468 | ​ | $ | 761 | ​ | $ | 1,444 | ​ | $ | 16,088 | ​ | $ | 434,681
Watch | ​ | ​ | 18,485 | ​ | ​ | 3,657 | ​ | ​ | 337 | ​ | ​ | 1,838 | ​ | ​ | 164 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | 24,481
Special Mention | ​ | ​ | 67 | ​ | ​ | 10 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 77
Substandard | ​ | ​ | 2,400 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 146 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 2,546
Substandard non-accrual | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1 | ​ | ​ | — | ​ | ​ | 1
Total real estate construction | ​ | $ | 200,184 | ​ | $ | 175,330 | ​ | $ | 64,362 | ​ | $ | 3,306 | ​ | $ | 1,071 | ​ | $ | 1,445 | ​ | $ | 16,088 | ​ | $ | 461,786
Retail real estate: |  |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Risk rating | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Pass | ​ | $ | 319,302 | ​ | $ | 162,711 | ​ | $ | 135,065 | ​ | $ | 136,427 | ​ | $ | 140,600 | ​ | $ | 257,147 | ​ | $ | 231,364 | ​ | $ | 1,382,616
Watch | ​ | ​ | 2,715 | ​ | ​ | 2,053 | ​ | ​ | 1,396 | ​ | ​ | 349 | ​ | ​ | 579 | ​ | ​ | 233 | ​ | ​ | 2,939 | ​ | ​ | 10,264
Special Mention | ​ | ​ | 509 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,962 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 2,471
Substandard | ​ | ​ | 899 | ​ | ​ | 96 | ​ | ​ | 56 | ​ | ​ | 26 | ​ | ​ | 727 | ​ | ​ | 1,631 | ​ | ​ | 267 | ​ | ​ | 3,702
Substandard non-accrual | ​ | ​ | 687 | ​ | ​ | 78 | ​ | ​ | 646 | ​ | ​ | 1,147 | ​ | ​ | 233 | ​ | ​ | 4,815 | ​ | ​ | 1,193 | ​ | ​ | 8,799
Total retail real estate | ​ | $ | 324,112 | ​ | $ | 164,938 | ​ | $ | 137,163 | ​ | $ | 137,949 | ​ | $ | 144,101 | ​ | $ | 263,826 | ​ | $ | 235,763 | ​ | $ | 1,407,852
Retail other: |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Risk rating | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Pass | ​ | $ | 8,357 | ​ | $ | 9,430 | ​ | $ | 5,600 | ​ | $ | 2,516 | ​ | $ | 691 | ​ | $ | 440 | ​ | $ | 10,290 | ​ | $ | 37,324
Watch | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Special Mention | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Substandard | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Substandard non-accrual | ​ | ​ | 14 | ​ | ​ | 7 | ​ | ​ | 5 | ​ | ​ | 15 | ​ | ​ | 5 | ​ | ​ | 57 | ​ | ​ | 1 | ​ | ​ | 104
Total retail other | ​ | $ | 8,371 | ​ | $ | 9,437 | ​ | $ | 5,605 | ​ | $ | 2,531 | ​ | $ | 696 | ​ | $ | 497 | ​ | $ | 10,291 | ​ | $ | 37,428
Summary of portfolio loans that are past due and still accruing or on a non-accrual status | An analysis of the amortized cost basis of portfolio loans that are past due and still accruing, or on a non-accrual status, is as follows (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
​ | ​ | Loans past due, still accruing | ​ | Non-accrual
​ |  | 30-59 Days |  | 60-89 Days |  | 90+Days |  | Loans
Commercial | ​ | $ | 243 | ​ | $ | — | ​ | $ | — | ​ | $ | 8,523
Commercial real estate | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 5,503
Real estate construction | ​ |  | 237 | ​ |  | 235 | ​ |  | — | ​ |  | 1
Retail real estate | ​ | ​ | 6,248 | ​ | ​ | 400 | ​ | ​ | 1,305 | ​ | ​ | 8,799
Retail other | ​ |  | 66 | ​ |  | 149 | ​ |  | 66 | ​ |  | 104
Past due and non-accrual loans | ​ | $ | 6,794 | ​ | $ | 784 | ​ | $ | 1,371 | ​ | $ | 22,930
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2019
​ | ​ | Loans past due, still accruing | ​ | Non-accrual
​ |  | 30-59 Days |  | 60-89 Days |  | 90+Days |  | Loans
Commercial | ​ | $ | 1,075 | ​ | $ | 1,014 | ​ | $ | 199 | ​ | $ | 9,096
Commercial real estate | ​ |  | 2,653 | ​ |  | 3,121 | ​ |  | 584 | ​ |  | 9,178
Real estate construction | ​ |  | 19 | ​ |  | — | ​ |  | — | ​ |  | 630
Retail real estate | ​ |  | 5,021 | ​ |  | 1,248 | ​ |  | 828 | ​ | ​ | 8,935
Retail other | ​ |  | 52 | ​ |  | 68 | ​ |  | — | ​ |  | 57
Past due and non-accrual loans | ​ | $ | 8,820 | ​ | $ | 5,451 | ​ | $ | 1,611 | ​ | $ | 27,896
Summary of restructured loans | A summary of TDR loans is as follows (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2020 |  | 2019
In compliance with modified terms | ​ | $ | 3,814 | ​ | $ | 5,005
30 – 89 days past due | ​ |  | 15 | ​ |  | —
Included in non-performing loans | ​ |  | 1,249 | ​ |  | 702
TDR loans | ​ | $ | 5,078 | ​ | $ | 5,707
Schedule of details of impaired loans, segregated by category | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
​ |  | Unpaid |  | Amortized |  |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​
​ | ​ | Contractual | ​ | Cost | ​ | Amortized | ​ | Total | ​ | ​ | ​ | ​ | Average
​ | ​ | Principal | ​ | with No | ​ | Cost | ​ | Amortized | ​ | Related | ​ | Amortized
​ |  | Balance |  | Allowance |  | with Allowance |  | Cost |  | Allowance |  | Cost
Commercial | ​ | $ | 16,771 | ​ | $ | 4,001 | ​ | $ | 4,371 | ​ | $ | 8,372 | ​ | $ | 1,600 | ​ | $ | 7,920
Commercial real estate | ​ |  | 7,406 | ​ | ​ | 6,067 | ​ | ​ | — | ​ |  | 6,067 | ​ |  | — | ​ |  | 9,349
Real estate construction | ​ |  | 292 | ​ |  | 292 | ​ |  | — | ​ |  | 292 | ​ |  | — | ​ |  | 581
Retail real estate | ​ |  | 5,873 | ​ |  | 5,490 | ​ |  | 25 | ​ |  | 5,515 | ​ |  | 25 | ​ |  | 7,439
Retail other | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 10
Loans evaluated individually | ​ | $ | 30,342 | ​ | $ | 15,850 | ​ | $ | 4,396 | ​ | $ | 20,246 | ​ | $ | 1,625 | ​ | $ | 25,299
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2019
​ |  | Unpaid |  | Amortized |  |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​
​ | ​ | Contractual | ​ | Cost | ​ | Amortized | ​ | Total | ​ | ​ | ​ | ​ | Average
​ | ​ | Principal | ​ | with No | ​ | Cost | ​ | Amortized | ​ | Related | ​ | Amortized
​ |  | Balance |  | Allowance |  | with Allowance |  | Cost |  | Allowance |  | Cost
Commercial | ​ | $ | 14,415 | ​ | $ | 4,727 | ​ | $ | 5,026 | ​ | $ | 9,753 | ​ | $ | 3,330 | ​ | $ | 13,774
Commercial real estate | ​ |  | 14,487 | ​ | ​ | 9,883 | ​ | ​ | 2,039 | ​ |  | 11,922 | ​ |  | 1,049 | ​ |  | 16,678
Real estate construction | ​ |  | 1,116 | ​ |  | 974 | ​ |  | — | ​ |  | 974 | ​ |  | — | ​ |  | 873
Retail real estate | ​ |  | 15,581 | ​ |  | 13,898 | ​ |  | 474 | ​ |  | 14,372 | ​ |  | 474 | ​ |  | 14,003
Retail other | ​ |  | 87 | ​ |  | 58 | ​ |  | — | ​ |  | 58 | ​ |  | — | ​ |  | 42
Loans evaluated individually | ​ | $ | 45,686 | ​ | $ | 29,540 | ​ | $ | 7,539 | ​ | $ | 37,079 | ​ | $ | 4,853 | ​ | $ | 45,370
Schedule of activity on the allowance for loan losses | The following table details activity in the allowance for credit losses. Allocation of a portion of the allowance to one category does not preclude its availability to absorb losses in other categories (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of and for the Year Ended December 31, 2020
​ | ​ | ​ | ​ |  | Commercial |  | Real Estate |  | Retail Real | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Commercial |  | Real Estate |  | Construction |  | Estate |  | Retail Other |  | Total
Beginning balance, prior to adoption of ASC 326 | ​ | $ | 18,291 | ​ | $ | 21,190 | ​ | $ | 3,204 | ​ | $ | 10,495 | ​ | $ | 568 | ​ | $ | 53,748
Adoption of ASC 326 | ​ | ​ | 715 | ​ | ​ | 9,306 | ​ | ​ | 2,954 | ​ | ​ | 3,292 | ​ | ​ | 566 | ​ | ​ | 16,833
Provision for credit losses | ​ |  | 10,832 | ​ |  | 17,511 | ​ |  | 1,452 | ​ |  | 9,050 | ​ |  | (48) | ​ |  | 38,797
Charged-off | ​ |  | (6,376) | ​ |  | (1,972) | ​ |  | (18) | ​ | ​ | (2,057) | ​ |  | (665) | ​ |  | (11,088)
Recoveries | ​ |  | 404 | ​ |  | 195 | ​ |  | 601 | ​ |  | 1,212 | ​ |  | 346 | ​ |  | 2,758
Ending balance | ​ | $ | 23,866 | ​ | $ | 46,230 | ​ | $ | 8,193 | ​ | $ | 21,992 | ​ | $ | 767 | ​ | $ | 101,048
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of and for the Year Ended December 31, 2019
​ | ​ | ​ | ​ |  | Commercial |  | Real Estate |  | Retail Real | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Commercial |  | Real Estate |  | Construction |  | Estate |  | Retail Other |  | Total
Beginning balance | ​ | $ | 17,829 | ​ | $ | 21,137 | ​ | $ | 2,723 | ​ | $ | 8,471 | ​ | $ | 488 | ​ | $ | 50,648
Provision for credit losses | ​ |  | 4,893 | ​ |  | 3,002 | ​ |  | (70) | ​ |  | 2,102 | ​ |  | 479 | ​ |  | 10,406
Charged-off | ​ |  | (6,478) | ​ |  | (3,257) | ​ |  | — | ​ | ​ | (1,162) | ​ |  | (863) | ​ |  | (11,760)
Recoveries | ​ |  | 2,047 | ​ |  | 308 | ​ |  | 551 | ​ |  | 1,084 | ​ |  | 464 | ​ |  | 4,454
Ending balance | ​ | $ | 18,291 | ​ | $ | 21,190 | ​ | $ | 3,204 | ​ | $ | 10,495 | ​ | $ | 568 | ​ | $ | 53,748
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of and for the Year Ended December 31, 2018
​ | ​ | ​ | ​ |  | Commercial |  | Real Estate |  | Retail Real | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Commercial |  | Real Estate |  | Construction |  | Estate |  | Retail Other |  | Total
Beginning balance | ​ | $ | 14,779 | ​ | $ | 21,813 | ​ | $ | 2,861 | ​ | $ | 13,783 | ​ | $ | 346 | ​ | $ | 53,582
Provision for credit losses | ​ |  | 5,767 | ​ |  | 3,227 | ​ |  | (259) | ​ |  | (4,824) | ​ |  | 518 | ​ |  | 4,429
Charged-off | ​ |  | (3,968) | ​ |  | (4,352) | ​ |  | (97) | ​ | ​ | (1,815) | ​ |  | (712) | ​ |  | (10,944)
Recoveries | ​ |  | 1,251 | ​ |  | 449 | ​ |  | 218 | ​ |  | 1,327 | ​ |  | 336 | ​ |  | 3,581
Ending balance | ​ | $ | 17,829 | ​ | $ | 21,137 | ​ | $ | 2,723 | ​ | $ | 8,471 | ​ | $ | 488 | ​ | $ | 50,648
Schedule of allowance for loan losses and recorded investments in portfolio loans, by category | The following table presents the allowance and amortized cost of portfolio loans by category (dollars in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2020
​ | ​ | ​ | ​ |  | Commercial |  | Real Estate |  | Retail Real | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Commercial |  | Real Estate |  | Construction |  | Estate |  | Retail Other |  | Total
Allowance: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ending balance attributed to: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loans individually evaluated for impairment | ​ | $ | 1,600 | ​ | $ | — | ​ | $ | — | ​ | $ | 25 | ​ | $ | — | ​ | $ | 1,625
Loans collectively evaluated for impairment | ​ |  | 22,266 | ​ |  | 46,230 | ​ |  | 8,193 | ​ |  | 21,967 | ​ |  | 767 | ​ |  | 99,423
Allowance, ending balance | ​ | $ | 23,866 | ​ | $ | 46,230 | ​ | $ | 8,193 | ​ | $ | 21,992 | ​ | $ | 767 | ​ | $ | 101,048
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loans: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loans individually evaluated for impairment | ​ | $ | 8,372 | ​ | $ | 4,161 | ​ | $ | 292 | ​ | $ | 5,149 | ​ | $ | — | ​ | $ | 17,974
Loans collectively evaluated for impairment | ​ |  | 2,006,204 | ​ |  | 2,886,468 | ​ | ​ | 461,494 | ​ |  | 1,402,337 | ​ |  | 37,428 | ​ |  | 6,793,931
PCD loans evaluated for impairment | ​ | ​ | — | ​ | ​ | 1,906 | ​ | ​ | — | ​ | ​ | 366 | ​ | ​ | — | ​ | ​ | 2,272
Loans, ending balance | ​ | $ | 2,014,576 | ​ | $ | 2,892,535 | ​ | $ | 461,786 | ​ | $ | 1,407,852 | ​ | $ | 37,428 | ​ | $ | 6,814,177
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of December 31, 2019
​ | ​ | ​ | ​ |  | Commercial |  | Real Estate |  | Retail Real | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Commercial |  | Real Estate |  | Construction |  | Estate |  | Retail Other |  | Total
Allowance: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Ending balance attributed to: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loans individually evaluated for impairment | ​ | $ | 3,330 | ​ | $ | 1,049 | ​ | $ | — | ​ | $ | 474 | ​ | $ | — | ​ | $ | 4,853
Loans collectively evaluated for impairment | ​ |  | 14,961 | ​ |  | 20,141 | ​ |  | 3,204 | ​ |  | 10,021 | ​ |  | 568 | ​ |  | 48,895
Allowance, ending balance | ​ | $ | 18,291 | ​ | $ | 21,190 | ​ | $ | 3,204 | ​ | $ | 10,495 | ​ | $ | 568 | ​ | $ | 53,748
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loans: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loans individually evaluated for impairment | ​ | $ | 9,740 | ​ | $ | 10,018 | ​ | $ | 539 | ​ | $ | 13,676 | ​ | $ | 58 | ​ | $ | 34,031
Loans collectively evaluated for impairment | ​ |  | 1,738,615 | ​ |  | 2,781,495 | ​ | ​ | 400,887 | ​ |  | 1,679,397 | ​ |  | 49,776 | ​ |  | 6,650,170
PCI loans evaluated for impairment | ​ | ​ | 13 | ​ | ​ | 1,904 | ​ | ​ | 435 | ​ | ​ | 696 | ​ | ​ | — | ​ | ​ | 3,048
Loans, ending balance | ​ | $ | 1,748,368 | ​ | $ | 2,793,417 | ​ | $ | 401,861 | ​ | $ | 1,693,769 | ​ | $ | 49,834 | ​ | $ | 6,687,249

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- Definition Tabular disclosure of the activity in the total allowance for credit losses related to financing receivables (such as loans or lease receivables) for entities that have an unclassified balance sheet, including the balance in the allowance at the beginning and end of each period, additions charged to operations, direct write-downs charged against the allowance, and recoveries of amounts previously charged off by category and geographic location. + References No definition available. + Details
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- Definition Tabular disclosure of restructured loans including those in compliance, past due and classified as non-performing. + References No definition available. + Details
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