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Bank segment (HEI only) - Available For Sale Investment Securities (Details) $ in Thousands | Dec. 31, 2021 USD ($) issue | Dec. 31, 2020 USD ($) issue
--- | --- | ---
Available-for-sale |  |
Available-for-sale investment securities | $ 2,574,618 | $ 1,970,417
Held-to-maturity |  |
Amortized cost | 522,270 | 226,947
Held-to-maturity investment securities | 510,474 |
American Savings Bank (ASB) |  |
Available-for-sale |  |
Amortized cost | 2,618,384 | 1,943,114
Gross unrealized gains | 7,969 | 30,454
Gross unrealized losses | (51,735) | (3,151)
Available-for-sale investment securities | $ 2,574,618 | $ 1,970,417
Number of issues, less than 12 months | issue | 125 | 22
Fair value, less than 12 months | $ 1,902,850 | $ 373,924
Gross unrealized losses, less than 12 months | $ (38,850) | $ (3,151)
Number of issues, more than 12 months | issue | 18 | 0
Fair value, 12 months or longer | $ 271,012 | $ 0
Gross unrealized losses, 12 months or longer | (12,885) | 0
Held-to-maturity |  |
Amortized cost | 522,270 | 226,947
Gross unrealized gains | 1,648 | 3,846
Gross unrealized losses | (13,444) | (830)
Held-to-maturity investment securities | $ 510,474 | $ 229,963
Number of issues, less than 12 months | issue | 24 | 7
Fair value, less than 12 months | $ 330,477 | $ 114,152
Gross unrealized losses, less than 12 months | $ (7,835) | $ (830)
Number of issues, more than 12 months | issue | 7 | 0
Fair value, 12 months or longer | $ 106,483 | $ 0
Gross unrealized losses, 12 months or longer | (5,609) | 0
American Savings Bank (ASB) | U.S. Treasury and federal agency obligations |  |
Available-for-sale |  |
Amortized cost | 89,714 | 60,260
Gross unrealized gains | 803 | 2,062
Gross unrealized losses | (427) | 0
Available-for-sale investment securities | $ 90,090 | $ 62,322
Number of issues, less than 12 months | issue | 4 | 0
Fair value, less than 12 months | $ 44,827 | $ 0
Gross unrealized losses, less than 12 months | $ (427) | $ 0
Number of issues, more than 12 months | issue | 0 | 0
Fair value, 12 months or longer | $ 0 | $ 0
Gross unrealized losses, 12 months or longer | 0 | 0
Held-to-maturity |  |
Amortized cost | 59,871 |
Gross unrealized gains | 168 |
Gross unrealized losses | (170) |
Held-to-maturity investment securities | $ 59,869 |
Number of issues, less than 12 months | issue | 2 |
Fair value, less than 12 months | $ 39,594 |
Gross unrealized losses, less than 12 months | $ (170) |
Number of issues, more than 12 months | issue | 0 |
Fair value, 12 months or longer | $ 0 |
Gross unrealized losses, 12 months or longer | 0 |
American Savings Bank (ASB) | Mortgage-backed securities — issued or guaranteed by U.S. Government agencies or sponsored agencies |  |
Available-for-sale |  |
Amortized cost | 2,482,618 | 1,825,893
Gross unrealized gains | 6,511 | 26,817
Gross unrealized losses | (51,206) | (3,151)
Available-for-sale investment securities | $ 2,437,923 | $ 1,849,559
Number of issues, less than 12 months | issue | 120 | 22
Fair value, less than 12 months | $ 1,845,243 | $ 373,924
Gross unrealized losses, less than 12 months | $ (38,321) | $ (3,151)
Number of issues, more than 12 months | issue | 18 | 0
Fair value, 12 months or longer | $ 271,012 | $ 0
Gross unrealized losses, 12 months or longer | (12,885) | 0
Held-to-maturity |  |
Amortized cost | 462,399 | 226,947
Gross unrealized gains | 1,480 | 3,846
Gross unrealized losses | (13,274) | (830)
Held-to-maturity investment securities | $ 450,605 | $ 229,963
Number of issues, less than 12 months | issue | 22 | 7
Fair value, less than 12 months | $ 290,883 | $ 114,152
Gross unrealized losses, less than 12 months | $ (7,665) | $ (830)
Number of issues, more than 12 months | issue | 7 | 0
Fair value, 12 months or longer | $ 106,483 | $ 0
Gross unrealized losses, 12 months or longer | (5,609) | 0
American Savings Bank (ASB) | Corporate bonds |  |
Available-for-sale |  |
Amortized cost | 30,625 | 29,776
Gross unrealized gains | 655 | 1,575
Gross unrealized losses | (102) | 0
Available-for-sale investment securities | $ 31,178 | $ 31,351
Number of issues, less than 12 months | issue | 1 | 0
Fair value, less than 12 months | $ 12,780 | $ 0
Gross unrealized losses, less than 12 months | $ (102) | $ 0
Number of issues, more than 12 months | issue | 0 | 0
Fair value, 12 months or longer | $ 0 | $ 0
Gross unrealized losses, 12 months or longer | 0 | 0
American Savings Bank (ASB) | Mortgage revenue bonds |  |
Available-for-sale |  |
Amortized cost | 15,427 | 27,185
Gross unrealized gains | 0 | 0
Gross unrealized losses | 0 | 0
Available-for-sale investment securities | $ 15,427 | $ 27,185
Number of issues, less than 12 months | issue | 0 | 0
Fair value, less than 12 months | $ 0 | $ 0
Gross unrealized losses, less than 12 months | $ 0 | $ 0
Number of issues, more than 12 months | issue | 0 | 0
Fair value, 12 months or longer | $ 0 | $ 0
Gross unrealized losses, 12 months or longer | $ 0 | $ 0

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