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v3.21.2

Credit agreements and changes in long-term debt (Tables) | 9 Months Ended
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Sep. 30, 2021
Debt Disclosure [Abstract] |
Schedule of notes | The following table displays the required draw date of the HEI notes.
|  | HEI Series 2021A |  | HEI Series 2021B |  | HEI Series 2021C |  | HEI Series 2022A |  | HEI Series 2022B
Aggregate principal amount |  | $30 million |  | $25 million |  | $20 million |  | $30 million |  | $20 million
Fixed coupon interest rate |  | 2.48% |  | 2.78% |  | 3.74% |  | 2.98% |  | 3.94%
Maturity date |  | 12/29/2028 |  | 12/29/2031 |  | 12/29/2051 |  | 11/15/2032 |  | 11/15/2052
Final draw date |  | 12/29/2021 |  | 12/29/2021 |  | 12/29/2021 |  | 11/15/2022 |  | 11/15/2022

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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