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Bank segment - Principal balance of impaired loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Dec. 31, 2017
Recorded investment: |  |  |  |  |
With no related allowance recorded | $ 16,803 |  | $ 16,803 |  | $ 14,072
With an allowance recorded | 22,780 |  | 22,780 |  | 19,321
Recorded investment | 39,583 |  | 39,583 |  | 33,393
Unpaid principal balance: |  |  |  |  |
With no related allowance recorded | 18,862 |  | 18,862 |  | 16,041
With an allowance recorded | 23,053 |  | 23,053 |  | 19,574
Unpaid principal balance | 41,915 |  | 41,915 |  | 35,615
Related Allowance | 2,848 |  | 2,848 |  | 2,730
Average recorded investment: |  |  |  |  |
With no related allowance recorded | 15,447 | $ 14,873 | 14,588 | $ 16,258 |
With an allowance recorded | 22,031 | 19,880 | 21,000 | 22,582 |
Average recorded investment | 37,478 | 34,753 | 35,588 | 38,840 |
Interest income recognized: |  |  |  |  |
With no related allowance recorded | 72 | 148 | 199 | 278 |
With an allowance recorded | 235 | 271 | 459 | 891 |
Interest income recognized | 307 | 419 | 658 | 1,169 |
Residential 1-4 family |  |  |  |  |
Recorded investment: |  |  |  |  |
With no related allowance recorded | 8,966 |  | 8,966 |  | 9,097
With an allowance recorded | 8,639 |  | 8,639 |  | 9,187
Recorded investment | 17,605 |  | 17,605 |  | 18,284
Unpaid principal balance: |  |  |  |  |
With no related allowance recorded | 9,498 |  | 9,498 |  | 9,644
With an allowance recorded | 8,842 |  | 8,842 |  | 9,390
Unpaid principal balance | 18,340 |  | 18,340 |  | 19,034
Related Allowance | 1,027 |  | 1,027 |  | 1,248
Average recorded investment: |  |  |  |  |
With no related allowance recorded | 8,900 | 9,304 | 8,699 | 9,429 |
With an allowance recorded | 8,778 | 10,054 | 8,953 | 10,051 |
Average recorded investment | 17,678 | 19,358 | 17,652 | 19,480 |
Interest income recognized: |  |  |  |  |
With no related allowance recorded | 50 | 76 | 157 | 160 |
With an allowance recorded | 97 | 117 | 190 | 236 |
Interest income recognized | 147 | 193 | 347 | 396 |
Commercial real estate |  |  |  |  |
Recorded investment: |  |  |  |  |
With no related allowance recorded | 0 |  | 0 |  | 0
With an allowance recorded | 993 |  | 993 |  | 1,016
Recorded investment | 993 |  | 993 |  | 1,016
Unpaid principal balance: |  |  |  |  |
With no related allowance recorded | 0 |  | 0 |  | 0
With an allowance recorded | 993 |  | 993 |  | 1,016
Unpaid principal balance | 993 |  | 993 |  | 1,016
Related Allowance | 53 |  | 53 |  | 65
Average recorded investment: |  |  |  |  |
With no related allowance recorded | 0 | 143 | 0 | 182 |
With an allowance recorded | 997 | 1,292 | 1,003 | 1,296 |
Average recorded investment | 997 | 1,435 | 1,003 | 1,478 |
Interest income recognized: |  |  |  |  |
With no related allowance recorded | 0 | 11 | 0 | 11 |
With an allowance recorded | 10 | 14 | 21 | 28 |
Interest income recognized | 10 | 25 | 21 | 39 |
Home equity line of credit |  |  |  |  |
Recorded investment: |  |  |  |  |
With no related allowance recorded | 2,505 |  | 2,505 |  | 1,496
With an allowance recorded | 11,344 |  | 11,344 |  | 6,692
Recorded investment | 13,849 |  | 13,849 |  | 8,188
Unpaid principal balance: |  |  |  |  |
With no related allowance recorded | 2,803 |  | 2,803 |  | 1,789
With an allowance recorded | 11,414 |  | 11,414 |  | 6,736
Unpaid principal balance | 14,217 |  | 14,217 |  | 8,525
Related Allowance | 1,161 |  | 1,161 |  | 647
Average recorded investment: |  |  |  |  |
With no related allowance recorded | 2,374 | 2,401 | 2,037 | 2,203 |
With an allowance recorded | 10,420 | 4,372 | 9,080 | 4,467 |
Average recorded investment | 12,794 | 6,773 | 11,117 | 6,670 |
Interest income recognized: |  |  |  |  |
With no related allowance recorded | 7 | 51 | 12 | 65 |
With an allowance recorded | 96 | 47 | 177 | 96 |
Interest income recognized | 103 | 98 | 189 | 161 |
Residential land |  |  |  |  |
Recorded investment: |  |  |  |  |
With no related allowance recorded | 1,141 |  | 1,141 |  | 1,143
With an allowance recorded | 30 |  | 30 |  | 122
Recorded investment | 1,171 |  | 1,171 |  | 1,265
Unpaid principal balance: |  |  |  |  |
With no related allowance recorded | 1,449 |  | 1,449 |  | 1,434
With an allowance recorded | 30 |  | 30 |  | 122
Unpaid principal balance | 1,479 |  | 1,479 |  | 1,556
Related Allowance | 7 |  | 7 |  | 47
Average recorded investment: |  |  |  |  |
With no related allowance recorded | 1,132 | 1,075 | 1,150 | 1,016 |
With an allowance recorded | 40 | 1,532 | 58 | 1,804 |
Average recorded investment | 1,172 | 2,607 | 1,208 | 2,820 |
Interest income recognized: |  |  |  |  |
With no related allowance recorded | 5 | 8 | 10 | 34 |
With an allowance recorded | 1 | 24 | 3 | 61 |
Interest income recognized | 6 | 32 | 13 | 95 |
Commercial construction |  |  |  |  |
Recorded investment: |  |  |  |  |
With no related allowance recorded | 0 |  | 0 |  | 0
With an allowance recorded | 0 |  | 0 |  | 0
Recorded investment | 0 |  | 0 |  | 0
Unpaid principal balance: |  |  |  |  |
With no related allowance recorded | 0 |  | 0 |  | 0
With an allowance recorded | 0 |  | 0 |  | 0
Unpaid principal balance | 0 |  | 0 |  | 0
Related Allowance | 0 |  | 0 |  | 0
Average recorded investment: |  |  |  |  |
With no related allowance recorded | 0 | 0 | 0 | 0 |
With an allowance recorded | 0 | 0 | 0 | 0 |
Average recorded investment | 0 | 0 | 0 | 0 |
Interest income recognized: |  |  |  |  |
With no related allowance recorded | 0 | 0 | 0 | 0 |
With an allowance recorded | 0 | 0 | 0 | 0 |
Interest income recognized | 0 | 0 | 0 | 0 |
Residential construction |  |  |  |  |
Recorded investment: |  |  |  |  |
With no related allowance recorded | 0 |  | 0 |  | 0
With an allowance recorded | 0 |  | 0 |  | 0
Recorded investment | 0 |  | 0 |  | 0
Unpaid principal balance: |  |  |  |  |
With no related allowance recorded | 0 |  | 0 |  | 0
With an allowance recorded | 0 |  | 0 |  | 0
Unpaid principal balance | 0 |  | 0 |  | 0
Related Allowance | 0 |  | 0 |  | 0
Average recorded investment: |  |  |  |  |
With no related allowance recorded | 0 | 0 | 0 | 0 |
With an allowance recorded | 0 | 0 | 0 | 0 |
Average recorded investment | 0 | 0 | 0 | 0 |
Interest income recognized: |  |  |  |  |
With no related allowance recorded | 0 | 0 | 0 | 0 |
With an allowance recorded | 0 | 0 | 0 | 0 |
Interest income recognized | 0 | 0 | 0 | 0 |
Commercial loans |  |  |  |  |
Recorded investment: |  |  |  |  |
With no related allowance recorded | 4,158 |  | 4,158 |  | 2,328
With an allowance recorded | 1,716 |  | 1,716 |  | 2,246
Recorded investment | 5,874 |  | 5,874 |  | 4,574
Unpaid principal balance: |  |  |  |  |
With no related allowance recorded | 5,079 |  | 5,079 |  | 3,166
With an allowance recorded | 1,716 |  | 1,716 |  | 2,252
Unpaid principal balance | 6,795 |  | 6,795 |  | 5,418
Related Allowance | 597 |  | 597 |  | 694
Average recorded investment: |  |  |  |  |
With no related allowance recorded | 3,026 | 1,949 | 2,691 | 3,428 |
With an allowance recorded | 1,738 | 2,562 | 1,848 | 4,915 |
Average recorded investment | 4,764 | 4,511 | 4,539 | 8,343 |
Interest income recognized: |  |  |  |  |
With no related allowance recorded | 10 | 2 | 20 | 8 |
With an allowance recorded | 30 | 68 | 66 | 469 |
Interest income recognized | 40 | 70 | 86 | 477 |
Consumer loans |  |  |  |  |
Recorded investment: |  |  |  |  |
With no related allowance recorded | 33 |  | 33 |  | 8
With an allowance recorded | 58 |  | 58 |  | 58
Recorded investment | 91 |  | 91 |  | 66
Unpaid principal balance: |  |  |  |  |
With no related allowance recorded | 33 |  | 33 |  | 8
With an allowance recorded | 58 |  | 58 |  | 58
Unpaid principal balance | 91 |  | 91 |  | 66
Related Allowance | 3 |  | 3 |  | $ 29
Average recorded investment: |  |  |  |  |
With no related allowance recorded | 15 | 1 | 11 | 0 |
With an allowance recorded | 58 | 68 | 58 | 49 |
Average recorded investment | 73 | 69 | 69 | 49 |
Interest income recognized: |  |  |  |  |
With no related allowance recorded | 0 | 0 | 0 | 0 |
With an allowance recorded | 1 | 1 | 2 | 1 |
Interest income recognized | $ 1 | $ 1 | $ 2 | $ 1 |

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