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Business Segments: (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013
Details of reportable segment |  |  |
Operating revenues | $ 101,945 | $ 110,552 |
Operating income (loss) | 22,768 | 27,963 |
Interest expense, net | 5,515 | 5,591 |
Utility Plant | 983,929 | 929,538 | 981,477
Depreciation and amortization expense | 10,530 | 9,816 |
Income tax expense (benefit) | 6,357 | 9,249 |
Capital additions | 20,531 | 18,425 |
GSWC |  |  |
Details of reportable segment |  |  |
Number of reportable segments | 2 |  |
Operating revenues | 81,213 | 79,967 |
Operating income (loss) | 20,430 | 23,596 |
Utility Plant | 979,297 |  | 977,294
Depreciation and amortization expense | 10,240 | 9,522 |
Income tax expense (benefit) | 5,705 | 7,663 |
AWR Parent |  |  |
Details of reportable segment |  |  |
Number of reportable segments | 3 |  |
Reportable Entities | GSWC | Water |  |  |
Details of reportable segment |  |  |
Operating revenues | 70,757 | 69,233 |
Operating income (loss) | 18,395 | 21,763 |
Interest expense, net | 5,168 | 5,194 |
Utility Plant | 938,744 | 883,863 |
Depreciation and amortization expense | 9,563 | 8,930 |
Income tax expense (benefit) | 4,958 | 6,941 |
Capital additions | 19,324 | 17,878 |
Reportable Entities | GSWC | Electric |  |  |
Details of reportable segment |  |  |
Operating revenues | 10,456 | 10,734 |
Operating income (loss) | 2,035 | 1,833 |
Interest expense, net | 334 | 376 |
Utility Plant | 40,553 | 40,963 |
Depreciation and amortization expense | 677 | 592 |
Income tax expense (benefit) | 747 | 722 |
Capital additions | 472 | 233 |
Reportable Entities | ASUS | Contracts |  |  |
Details of reportable segment |  |  |
Operating revenues | 20,732 | 30,585 |
Operating income (loss) | 2,384 | 4,367 |
Interest expense, net | 67 | 60 |
Utility Plant | 4,632 | 4,712 |
Depreciation and amortization expense | 290 | 294 |
Income tax expense (benefit) | 823 | 1,666 |
Capital additions | 735 | 314 |
Intersegment Eliminations | AWR Parent |  |  |
Details of reportable segment |  |  |
Operating revenues | 0 | 0 |
Operating income (loss) | (46) | 0 |
Interest expense, net | (54) | (39) |
Utility Plant | 0 | 0 |
Depreciation and amortization expense | 0 | 0 |
Income tax expense (benefit) | (171) | (80) |
Capital additions | $ 0 | $ 0 |

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