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Electric utility segment (Details 1) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Regulatory assets |  |
Regulatory assets | $ 575,924 | $ 864,596
Regulatory liabilities |  |
Regulatory liabilities | 349,299 | 324,152
Hawaiian Electric Company, Inc. and Subsidiaries |  |
Regulatory assets |  |
Regulatory assets | 575,924 | 864,596
Regulatory liabilities |  |
Regulatory liabilities | 349,299 | 324,152
Hawaiian Electric Company, Inc. and Subsidiaries | Cost of removal in excess of salvage value |  |
Regulatory liabilities |  |
Regulatory liabilities | 315,164 | 305,978
Hawaiian Electric Company, Inc. and Subsidiaries | Retirement benefit plans, regulatory liabilities |  |
Regulatory liabilities |  |
Regulatory liabilities | 31,546 | 15,563
Authorized amortization or recovery periods | 5 years | 5 years
Remaining amortization or recovery periods | 5 years | 5 years
Hawaiian Electric Company, Inc. and Subsidiaries | Other, regulatory liabilities |  |
Regulatory liabilities |  |
Regulatory liabilities | 2,589 | 2,611
Authorized amortization or recovery periods | 5 years | 5 years
Hawaiian Electric Company, Inc. and Subsidiaries | Retirement benefit plans, regulatory assets |  |
Regulatory assets |  |
Regulatory assets | 350,821 | 660,835
Hawaiian Electric Company, Inc. and Subsidiaries | Income taxes, net |  |
Regulatory assets |  |
Regulatory assets | 85,430 | 84,931
Hawaiian Electric Company, Inc. and Subsidiaries | Decoupling revenue balancing account |  |
Regulatory assets |  |
Regulatory assets | 90,386 | 66,076
Hawaiian Electric Company, Inc. and Subsidiaries | Unamortized expense and premiums on retired debt and equity issuances |  |
Regulatory assets |  |
Regulatory assets | 17,342 | 17,130
Hawaiian Electric Company, Inc. and Subsidiaries | Vacation earned, but not yet taken |  |
Regulatory assets |  |
Regulatory assets | 9,149 | 8,493
Authorized amortization or recovery periods | 1 year | 1 year
Hawaiian Electric Company, Inc. and Subsidiaries | Postretirement benefits other than pensions |  |
Regulatory assets |  |
Regulatory assets | 62 | 249
Authorized amortization or recovery periods | 18 years | 18 years
Remaining amortization or recovery periods | 1 year | 1 year
Hawaiian Electric Company, Inc. and Subsidiaries | Other, regulatory assets |  |
Regulatory assets |  |
Regulatory assets | 22,734 | 26,882
Hawaiian Electric Company, Inc. and Subsidiaries | Maximum | Cost of removal in excess of salvage value |  |
Regulatory liabilities |  |
Authorized amortization or recovery periods | 60 years | 60 years
Hawaiian Electric Company, Inc. and Subsidiaries | Maximum | Other, regulatory liabilities |  |
Regulatory liabilities |  |
Remaining amortization or recovery periods | 2 years | 2 years
Hawaiian Electric Company, Inc. and Subsidiaries | Maximum | Income taxes, net |  |
Regulatory assets |  |
Authorized amortization or recovery periods | 55 years | 55 years
Hawaiian Electric Company, Inc. and Subsidiaries | Maximum | Decoupling revenue balancing account |  |
Regulatory assets |  |
Authorized amortization or recovery periods | 2 years | 2 years
Hawaiian Electric Company, Inc. and Subsidiaries | Maximum | Unamortized expense and premiums on retired debt and equity issuances |  |
Regulatory assets |  |
Authorized amortization or recovery periods | 30 years | 30 years
Remaining amortization or recovery periods | 20 years | 20 years
Hawaiian Electric Company, Inc. and Subsidiaries | Maximum | Other, regulatory assets |  |
Regulatory assets |  |
Authorized amortization or recovery periods | 50 years | 50 years
Remaining amortization or recovery periods | 47 years | 47 years
Hawaiian Electric Company, Inc. and Subsidiaries | Minimum | Cost of removal in excess of salvage value |  |
Regulatory liabilities |  |
Authorized amortization or recovery periods | 1 year | 1 year
Hawaiian Electric Company, Inc. and Subsidiaries | Minimum | Other, regulatory liabilities |  |
Regulatory liabilities |  |
Remaining amortization or recovery periods | 1 year | 1 year
Hawaiian Electric Company, Inc. and Subsidiaries | Minimum | Income taxes, net |  |
Regulatory assets |  |
Authorized amortization or recovery periods | 1 year | 1 year
Hawaiian Electric Company, Inc. and Subsidiaries | Minimum | Decoupling revenue balancing account |  |
Regulatory assets |  |
Authorized amortization or recovery periods | 1 year | 1 year
Hawaiian Electric Company, Inc. and Subsidiaries | Minimum | Unamortized expense and premiums on retired debt and equity issuances |  |
Regulatory assets |  |
Authorized amortization or recovery periods | 14 years | 14 years
Remaining amortization or recovery periods | 2 years | 2 years
Hawaiian Electric Company, Inc. and Subsidiaries | Minimum | Other, regulatory assets |  |
Regulatory assets |  |
Authorized amortization or recovery periods | 1 year | 1 year
Remaining amortization or recovery periods | 1 year | 1 year
Hawaiian Electric Company, Inc. and Subsidiaries | Current assets |  |
Regulatory assets |  |
Regulatory assets | 69,738 | 51,267
Hawaiian Electric Company, Inc. and Subsidiaries | Long-term assets |  |
Regulatory assets |  |
Regulatory assets | 506,186 | 813,329
Hawaiian Electric Company, Inc. and Subsidiaries | Current liabilities |  |
Regulatory liabilities |  |
Regulatory liabilities | 1,916 | 1,212
Hawaiian Electric Company, Inc. and Subsidiaries | Long-term liabilities |  |
Regulatory liabilities |  |
Regulatory liabilities | $ 347,383 | $ 322,940

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