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Electric utility segment - Consolidating statement of changes in common stock equity (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Beginning Balance | $ 1,927,640 | $ 1,790,573
Net income for common stock | 32,352 | 31,866
Other comprehensive income, net of taxes | 8,800 | 4,058
Common stock dividends | (33,367) | (31,840)
Ending Balance | 1,942,179 | 1,897,909
Hawaiian Electric Company |  |
Beginning Balance | 1,728,325 | 1,682,144
Net income for common stock | 25,367 | 26,874
Other comprehensive income, net of taxes | 1,016 | 22
Common stock dividends | (23,400) | (22,601)
Common stock issuance expenses | (4) | (5)
Ending Balance | 1,731,304 | 1,686,434
HELCO |  |
Beginning Balance | 292,702 | 281,846
Net income for common stock | 3,962 | 3,788
Other comprehensive income, net of taxes | 0 | 0
Common stock dividends | (3,302) | (2,505)
Common stock issuance expenses | (4) | 0
Ending Balance | 293,358 | 283,129
Maui Electric |  |
Beginning Balance | 263,725 | 256,692
Net income for common stock | 3,967 | 3,904
Other comprehensive income, net of taxes | 0 | 0
Common stock dividends | (3,265) | (3,794)
Common stock issuance expenses | (1) | 0
Ending Balance | 264,426 | 256,802
Other subsidiaries |  |
Beginning Balance | 101 | 101
Net income for common stock | 0 | 0
Other comprehensive income, net of taxes | 0 | 0
Ending Balance | 101 | 101
Consolidating adjustments |  |
Beginning Balance | (556,528) | (538,639)
Net income for common stock | (7,929) | (7,692)
Other comprehensive income, net of taxes | 0 | 0
Common stock dividends | 6,567 | 6,299
Common stock issuance expenses | 5 | 0
Ending Balance | (557,885) | (540,032)
Hawaiian Electric Company, Inc. and Subsidiaries |  |
Beginning Balance | 1,728,325 | 1,682,144
Net income for common stock | 25,367 | 26,874
Other comprehensive income, net of taxes | 1,016 | 22
Common stock dividends | (23,400) | (22,601)
Common stock issuance expenses | (4) | (5)
Ending Balance | $ 1,731,304 | $ 1,686,434

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- Definition Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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