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Bank segment (HEI only) - Securities Sold Under Agreements to Repurchase, Including Related Collateral Received From or Pledged to Counterparties (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Securities sold under agreements to repurchase |  |  |
Gross amount of recognized liabilities | $ 141,000 | $ 93,000 |
Gross amount offset in the Balance Sheet | 0 | 0 |
Net amount of liabilities presented in the Balance Sheet | 141,000 | 93,000 |
Financial instruments | 165,000 | 116,000 |
Cash collateral pledged | $ 0 | 0 |
Fair value of collateral, percent of fair value | 5.00% |  |
Repurchase liability | $ 140,859 | $ 92,618 |
Weighted-average interest rate as of end of the period | 0.65% | 0.23% |
Identical securities |  |  |
Securities sold under agreements to repurchase |  |  |
Repurchase liability | $ 141,000 | $ 93,000 | $ 229,000
Average amount outstanding during the year | 98,000 | 170,000 | 219,000
Maximum amount outstanding as of any month-end | $ 141,000 | $ 229,000 | $ 277,000
Weighted-average interest rate as of end of the period | 0.65% | 0.23% | 1.24%
Weighted-average interest rate during the year | 0.26% | 1.43% | 1.29%
Weighted-average remaining days to maturity as of end of the period | 1 day | 6 days | 117 days
Government entities |  |  |
Securities sold under agreements to repurchase |  |  |
Net amount of liabilities presented in the Balance Sheet |  | $ 14,000 |
Financial instruments |  | 15,000 |
Cash collateral pledged |  | 0 |
Commercial account holders |  |  |
Securities sold under agreements to repurchase |  |  |
Net amount of liabilities presented in the Balance Sheet | $ 141,000 | 79,000 |
Financial instruments | 165,000 | 101,000 |
Cash collateral pledged | $ 0 | $ 0 |

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- Definition Average amount to be repaid to the counterparty to the repurchase agreement at a future date. + References No definition available. + Details
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- Definition Represents the interest rate on assets sold under agreements to repurchase. + References No definition available. + Details
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- Definition Maximum amount to be repaid to the counterparty to the repurchase agreement at a future date. + References No definition available. + Details
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- Definition Weighted-average remaining period of maturity for a group of securities or other assets sold under repurchase agreements, as of end of the period. + References No definition available. + Details
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- Definition Amount of right to receive financial instruments collateral under master netting arrangements that have not been offset against securities sold under agreement to repurchase. + References No definition available. + Details
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- Definition Securities Sold Under Agreements To Repurchase, Fair Value Of Collateral, Percent Of Fair Value + References No definition available. + Details
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- Definition Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(i)(A)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(i)(A)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(a)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49176635&loc=d3e9760-107771 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Repurchase Agreement Accounted for as a Collateralized Borrowing -URI http://asc.fasb.org/extlink&oid=49203159 + Details
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