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Portfolio loans - Activity in the allowance for loan losses (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Dec. 31, 2019
Activity in the allowance for loan losses |  |  |  |
Beginning balance | $ 53,748 | $ 50,648 |  |
Provision for loan losses | 17,216 | 2,111 |  |
Charged-off | (4,148) | (2,469) |  |
Recoveries | 735 | 625 |  |
Ending balance | 84,384 | 50,915 |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Loans individually evaluated for impairment |  |  | $ 3,938 | $ 4,853
Loans collectively evaluated for impairment |  |  | 80,446 | 48,895
Ending balance | 53,748 | 50,915 | 84,384 | 53,748
Loans: |  |  |  |
Loans individually evaluated for impairment |  |  | 22,791 | 34,031
Loans collectively evaluated for impairment |  |  | 6,720,127 | 6,650,170
PCI loans evaluated for impairment |  |  | 2,581 | 3,048
Ending balance |  |  | 6,745,499 | 6,687,249
Commercial Loans |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 18,291 | 17,829 |  |
Provision for loan losses | 5,673 | 1,793 |  |
Charged-off | (2,042) | (1,807) |  |
Recoveries | 88 | 183 |  |
Ending balance | 22,725 | 17,998 |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Loans individually evaluated for impairment |  |  | 2,822 | 3,330
Loans collectively evaluated for impairment |  |  | 19,903 | 14,961
Ending balance | 18,291 | 17,998 | 22,725 | 18,291
Loans: |  |  |  |
Loans individually evaluated for impairment |  |  | 7,414 | 9,740
Loans collectively evaluated for impairment |  |  | 1,759,769 | 1,738,615
PCI loans evaluated for impairment |  |  | 8 | 13
Ending balance |  |  | 1,767,191 | 1,748,368
Commercial Real Estate Loans |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 21,190 | 21,137 |  |
Provision for loan losses | 6,526 | (1,089) |  |
Charged-off | (1,099) | (15) |  |
Recoveries | 44 | 64 |  |
Ending balance | 35,967 | 20,097 |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Loans individually evaluated for impairment |  |  | 642 | 1,049
Loans collectively evaluated for impairment |  |  | 35,325 | 20,141
Ending balance | 21,190 | 20,097 | 35,967 | 21,190
Loans: |  |  |  |
Loans individually evaluated for impairment |  |  | 8,452 | 10,018
Loans collectively evaluated for impairment |  |  | 2,814,686 | 2,781,495
PCI loans evaluated for impairment |  |  | 1,865 | 1,904
Ending balance |  |  | 2,825,003 | 2,793,417
Real Estate Construction |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 3,204 | 2,723 |  |
Provision for loan losses | 889 | 2 |  |
Recoveries | 146 | 82 |  |
Ending balance | 7,193 | 2,807 |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Loans collectively evaluated for impairment |  |  | 7,193 | 3,204
Ending balance | 3,204 | 2,807 | 7,193 | 3,204
Loans: |  |  |  |
Loans individually evaluated for impairment |  |  | 307 | 539
Loans collectively evaluated for impairment |  |  | 447,751 | 400,887
PCI loans evaluated for impairment |  |  | 255 | 435
Ending balance |  |  | 448,313 | 401,861
Retail Real Estate |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 10,495 | 8,471 |  |
Provision for loan losses | 4,037 | 1,357 |  |
Charged-off | (708) | (517) |  |
Recoveries | 338 | 192 |  |
Ending balance | 17,454 | 9,503 |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Loans individually evaluated for impairment |  |  | 474 | 474
Loans collectively evaluated for impairment |  |  | 16,980 | 10,021
Ending balance | 10,495 | 9,503 | 17,454 | 10,495
Loans: |  |  |  |
Loans individually evaluated for impairment |  |  | 6,618 | 13,676
Loans collectively evaluated for impairment |  |  | 1,649,557 | 1,679,397
PCI loans evaluated for impairment |  |  | 453 | 696
Ending balance |  |  | 1,656,628 | 1,693,769
Retail Other |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 568 | 488 |  |
Provision for loan losses | 91 | 48 |  |
Charged-off | (299) | (130) |  |
Recoveries | 119 | 104 |  |
Ending balance | 1,045 | 510 |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Loans collectively evaluated for impairment |  |  | 1,045 | 568
Ending balance | 568 | $ 510 | 1,045 | 568
Loans: |  |  |  |
Loans individually evaluated for impairment |  |  |  | 58
Loans collectively evaluated for impairment |  |  | 48,364 | 49,776
Ending balance |  |  | $ 48,364 | 49,834
Post ASC 326 |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 16,833 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 16,833 |  |  | 16,833
Post ASC 326 | Commercial Loans |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 715 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 715 |  |  | 715
Post ASC 326 | Commercial Real Estate Loans |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 9,306 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 9,306 |  |  | 9,306
Post ASC 326 | Real Estate Construction |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 2,954 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 2,954 |  |  | 2,954
Post ASC 326 | Retail Real Estate |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 3,292 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 3,292 |  |  | 3,292
Post ASC 326 | Retail Other |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 566 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 566 |  |  | 566
Pre-ASC 326 |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 53,748 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 53,748 |  |  | 53,748
Pre-ASC 326 | Commercial Loans |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 18,291 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 18,291 |  |  | 18,291
Pre-ASC 326 | Commercial Real Estate Loans |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 21,190 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 21,190 |  |  | 21,190
Pre-ASC 326 | Real Estate Construction |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 3,204 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 3,204 |  |  | 3,204
Pre-ASC 326 | Retail Real Estate |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 10,495 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | 10,495 |  |  | 10,495
Pre-ASC 326 | Retail Other |  |  |  |
Activity in the allowance for loan losses |  |  |  |
Beginning balance | 568 |  |  |
Allowance for loan losses Ending balance attributed to: |  |  |  |
Ending balance | $ 568 |  |  | $ 568

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