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Bank segment (HEI only) - Carrying Amount of Impaired Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Recorded investment: |  |  |
With no related allowance recorded | $ 14,072 | $ 18,811 |
With an allowance recorded | 19,321 | 32,948 |
Recorded investment | 33,393 | 51,759 |
Unpaid principal balance: |  |  |
With no related allowance recorded | 16,041 | 23,200 |
With an allowance recorded | 19,574 | 33,205 |
Unpaid principal balance | 35,615 | 56,405 |
Related Allowance | 2,730 | 4,083 |
Average recorded investment: |  |  |
With no related allowance recorded | 15,378 | 22,579 | $ 19,651
With an allowance recorded | 21,160 | 36,398 | 31,732
Average recorded investment | 36,538 | 58,977 | 51,383
Interest income recognized: |  |  |
With no related allowance recorded | 599 | 783 | 704
With an allowance recorded | 1,621 | 1,271 | 1,140
Interest income recognized | 2,220 | 2,054 | 1,844
Residential 1-4 family |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 9,097 | 9,571 |
With an allowance recorded | 9,187 | 10,283 |
Recorded investment | 18,284 | 19,854 |
Unpaid principal balance: |  |  |
With no related allowance recorded | 9,644 | 10,400 |
With an allowance recorded | 9,390 | 10,486 |
Unpaid principal balance | 19,034 | 20,886 |
Related Allowance | 1,248 | 1,352 |
Average recorded investment: |  |  |
With no related allowance recorded | 9,440 | 10,136 | 11,215
With an allowance recorded | 9,818 | 11,589 | 11,578
Average recorded investment | 19,258 | 21,725 | 22,793
Interest income recognized: |  |  |
With no related allowance recorded | 316 | 324 | 332
With an allowance recorded | 493 | 457 | 562
Interest income recognized | 809 | 781 | 894
Commercial real estate |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 0 | 223 |
With an allowance recorded | 1,016 | 1,346 |
Recorded investment | 1,016 | 1,569 |
Unpaid principal balance: |  |  |
With no related allowance recorded | 0 | 228 |
With an allowance recorded | 1,016 | 1,346 |
Unpaid principal balance | 1,016 | 1,574 |
Related Allowance | 65 | 80 |
Average recorded investment: |  |  |
With no related allowance recorded | 91 | 1,124 | 370
With an allowance recorded | 1,241 | 1,962 | 1,699
Average recorded investment | 1,332 | 3,086 | 2,069
Interest income recognized: |  |  |
With no related allowance recorded | 11 | 0 | 74
With an allowance recorded | 54 | 15 | 0
Interest income recognized | 65 | 15 | 74
Home equity line of credit |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 1,496 | 1,500 |
With an allowance recorded | 6,692 | 4,658 |
Recorded investment | 8,188 | 6,158 |
Unpaid principal balance: |  |  |
With no related allowance recorded | 1,789 | 1,900 |
With an allowance recorded | 6,736 | 4,712 |
Unpaid principal balance | 8,525 | 6,612 |
Related Allowance | 647 | 215 |
Average recorded investment: |  |  |
With no related allowance recorded | 1,976 | 1,105 | 484
With an allowance recorded | 5,045 | 3,765 | 1,597
Average recorded investment | 7,021 | 4,870 | 2,081
Interest income recognized: |  |  |
With no related allowance recorded | 101 | 23 | 4
With an allowance recorded | 251 | 137 | 49
Interest income recognized | 352 | 160 | 53
Residential land |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 1,143 | 1,218 |
With an allowance recorded | 122 | 2,411 |
Recorded investment | 1,265 | 3,629 |
Unpaid principal balance: |  |  |
With no related allowance recorded | 1,434 | 1,803 |
With an allowance recorded | 122 | 2,411 |
Unpaid principal balance | 1,556 | 4,214 |
Related Allowance | 47 | 789 |
Average recorded investment: |  |  |
With no related allowance recorded | 1,094 | 1,518 | 2,397
With an allowance recorded | 1,308 | 2,964 | 4,337
Average recorded investment | 2,402 | 4,482 | 6,734
Interest income recognized: |  |  |
With no related allowance recorded | 117 | 66 | 137
With an allowance recorded | 97 | 206 | 318
Interest income recognized | 214 | 272 | 455
Commercial construction |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 0 | 0 |
With an allowance recorded | 0 | 0 |
Recorded investment | 0 | 0 |
Unpaid principal balance: |  |  |
With no related allowance recorded | 0 | 0 |
With an allowance recorded | 0 | 0 |
Unpaid principal balance | 0 | 0 |
Related Allowance | 0 | 0 |
Average recorded investment: |  |  |
With no related allowance recorded | 0 | 0 | 0
With an allowance recorded | 0 | 0 | 0
Average recorded investment | 0 | 0 | 0
Interest income recognized: |  |  |
With no related allowance recorded | 0 | 0 | 0
With an allowance recorded | 0 | 0 | 0
Interest income recognized | 0 | 0 | 0
Residential construction |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 0 | 0 |
With an allowance recorded | 0 | 0 |
Recorded investment | 0 | 0 |
Unpaid principal balance: |  |  |
With no related allowance recorded | 0 | 0 |
With an allowance recorded | 0 | 0 |
Unpaid principal balance | 0 | 0 |
Related Allowance | 0 | 0 |
Average recorded investment: |  |  |
With no related allowance recorded | 0 | 0 | 0
With an allowance recorded | 0 | 0 | 0
Average recorded investment | 0 | 0 | 0
Interest income recognized: |  |  |
With no related allowance recorded | 0 | 0 | 0
With an allowance recorded | 0 | 0 | 0
Interest income recognized | 0 | 0 | 0
Commercial |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 2,328 | 6,299 |
With an allowance recorded | 2,246 | 14,240 |
Recorded investment | 4,574 | 20,539 |
Unpaid principal balance: |  |  |
With no related allowance recorded | 3,166 | 8,869 |
With an allowance recorded | 2,252 | 14,240 |
Unpaid principal balance | 5,418 | 23,109 |
Related Allowance | 694 | 1,641 |
Average recorded investment: |  |  |
With no related allowance recorded | 2,776 | 8,694 | 5,185
With an allowance recorded | 3,691 | 16,106 | 12,507
Average recorded investment | 6,467 | 24,800 | 17,692
Interest income recognized: |  |  |
With no related allowance recorded | 54 | 370 | 157
With an allowance recorded | 723 | 456 | 211
Interest income recognized | 777 | 826 | 368
Consumer |  |  |
Recorded investment: |  |  |
With no related allowance recorded | 8 | 0 |
With an allowance recorded | 58 | 10 |
Recorded investment | 66 | 10 |
Unpaid principal balance: |  |  |
With no related allowance recorded | 8 | 0 |
With an allowance recorded | 58 | 10 |
Unpaid principal balance | 66 | 10 |
Related Allowance | 29 | 6 |
Average recorded investment: |  |  |
With no related allowance recorded | 1 | 2 | 0
With an allowance recorded | 57 | 12 | 14
Average recorded investment | 58 | 14 | 14
Interest income recognized: |  |  |
With no related allowance recorded | 0 | 0 | 0
With an allowance recorded | 3 | 0 | 0
Interest income recognized | $ 3 | $ 0 | $ 0

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