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Bank segment (HEI only) - Reconciliation of Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |
Gain on sale of investment securities, net | $ 528 | $ 9,275 | $ 653
Total revenues | 2,850,379 | 2,579,775 | 2,873,948
Total interest expense | 99,403 | 99,808 | 109,339
Provision for credit losses | (26,425) | 49,811 | 23,480
Less: Retirement defined benefits expense (credit)—other than service costs | (5,848) | 3,210 | 2,806
Total expenses | 2,464,313 | 2,268,282 | 2,525,927
Operating income | 386,066 | 311,493 | 348,021
Add back: Retirement defined benefits expense (credit)—other than service costs | (5,848) | 3,210 | 2,806
Add back: Gain on sale of investment securities, net | 528 | 9,275 | 653
Income before income taxes | 310,863 | 240,624 | 271,409
American Savings Bank (ASB) |  |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |
Interest and dividend income | 242,266 | 244,663 | 266,554
Noninterest income | 64,660 | 78,123 | 72,778
Less: Gain on sale of real estate | 0 | 0 | 10,762
Gain on sale of investment securities, net | 528 | 9,275 | 653
Total revenues | 306,398 | 313,511 | 327,917
Total interest expense | 5,040 | 11,114 | 18,440
Provision for credit losses | (25,825) | 50,811 | 23,480
Noninterest expense | 197,152 | 191,590 | 185,378
Less: Retirement defined benefits expense (credit)—other than service costs | (1,828) | 1,813 | (472)
Gain on sale of properties | 0 | 0 | 10,762
Total expenses | 178,195 | 251,702 | 217,008
Operating income | 128,203 | 61,809 | 110,909
Add back: Retirement defined benefits expense (credit)—other than service costs | (1,828) | 1,813 | (472)
Add back: Gain on sale of investment securities, net | 528 | 9,275 | 653
Income before income taxes | $ 130,559 | $ 69,271 | $ 112,034

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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2443-110228 + Details
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