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Reconciliation of electric utility operating income per HEI and HECO consolidated statements of income (Details) - HECO (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 30, 2011
Operating income from regulated and nonregulated activities before income taxes (per HEI consolidated statements of income) | $ 79,406 | $ 63,661 | $ 155,222 | $ 127,036
Income taxes on regulated activities | (22,824) | (13,742) | (44,122) | (29,806)
Electric utility |  |  |  |
Operating income from regulated and nonregulated activities before income taxes (per HEI consolidated statements of income) | 61,496 | 42,518 | 118,750 | 87,726
Income taxes on regulated activities | (18,626) | (11,080) | (36,034) | (22,659)
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |
Operating income | 28,297 | 14,395 | 53,233 | 30,285
Hawaiian Electric Company, Inc. and Subsidiaries | Electric utility |  |  |  |
Operating income from regulated and nonregulated activities before income taxes (per HEI consolidated statements of income) | 61,496 | 42,518 | 118,750 | 87,726
Income taxes on regulated activities | (18,574) | (11,160) | (35,939) | (22,770)
Revenues from nonregulated activities | (1,867) | (1,086) | (3,539) | (2,120)
Add: Expenses from nonregulated activities | 452 | 268 | 816 | 423
Operating income | $ 41,507 | $ 30,540 | $ 80,088 | $ 63,259

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- Definition The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: 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.(h)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 + Details
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