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Regulatory Matters: (Tables) | 6 Months Ended
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Jun. 30, 2015
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) |  | June 30, 2015 |  | December 31, 2014
GSWC |  |  |  |
Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account |  | $ | 28,542 |  |  | $ | 9,369 |
Base Revenue Requirement Adjustment Mechanism |  | 5,668 |  |  | 7,761 |
Costs deferred for future recovery on Aerojet case |  | 13,220 |  |  | 13,629 |
Pensions and other post-retirement obligations (Note 7) |  | 42,145 |  |  | 43,426 |
Derivative unrealized loss (Note 4) |  | 5,662 |  |  | 3,339 |
Flow-through taxes, net (Note 6) |  | 16,745 |  |  | 17,612 |
Low income rate assistance balancing accounts |  | 8,990 |  |  | 9,109 |
Other regulatory assets |  | 18,888 |  |  | 22,218 |
Various refunds to customers |  | (620 | ) |  | (759 | )
Total |  | $ | 139,240 |  |  | $ | 125,704 |

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