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Consolidated Balance Sheets (unaudited) (Parenthetical) - HECO - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Common stock, authorized shares (in shares) | 200,000,000 | 200,000,000
Common stock, outstanding shares (in shares) | 107,458,641 | 102,565,266
Hawaiian Electric Company, Inc. and Subsidiaries |  |
Nonutility property, plant and equipment, accumulated depreciation | $ 1,228 | $ 1,227
Common stock, par value (in dollars per share) | $ 6.67 | $ 6.67
Common stock, authorized shares (in shares) | 50,000,000 | 50,000,000
Common stock, outstanding shares (in shares) | 15,805,327 | 15,805,327

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