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Regulatory Matters: (Tables) | 3 Months Ended
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Mar. 31, 2016
Regulated Operations [Abstract] |
Schedule of regulatory assets, less regulatory liabilities in the consolidated balance sheets for continuing operations | Regulatory assets, less regulatory liabilities, included in the consolidated balance sheets are as follows:
(dollars in thousands) |  | March 31, 2016 |  | December 31, 2015
GSWC |  |  |  |
Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account |  | $ | 53,948 |  |  | $ | 45,171 |
Costs deferred for future recovery on Aerojet case |  | 12,567 |  |  | 12,699 |
Pensions and other post-retirement obligations (Note 7) |  | 25,538 |  |  | 21,996 |
Derivative unrealized loss (Note 4) |  | 7,245 |  |  | 7,053 |
Flow-through taxes, net (Note 6) |  | 16,551 |  |  | 16,176 |
Low income rate assistance balancing accounts |  | 8,810 |  |  | 8,699 |
Other regulatory assets |  | 25,298 |  |  | 25,668 |
Various refunds to customers |  | (5,759 | ) |  | (4,766 | )
Total |  | $ | 144,198 |  |  | $ | 132,696 |

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