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Summary of Significant Accounting Policies: (Details) customer in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2016 USD ($) customer registrant | Mar. 31, 2015 USD ($) | Dec. 31, 2015 USD ($) | Oct. 27, 2015 USD ($)
Basis of Presentation: |  |  |  |
Number of registrants filing combined report | registrant | 2 |  |  |
Sales and Use Taxes: |  |  |  |
Non-income tax assessments accounted on a gross basis | $ 4,378,000 | $ 4,276,000 |  |
Debt Issuance Cost | 4,500,000 | 4,900,000 | $ 4,600,000 |
AWR | Syndicated Credit Facility |  |  |  |
Related Party Transactions |  |  |  |
Maximum borrowing capacity on line of credit | 100,000,000 |  |  |
GOLDEN STATE WATER COMPANY |  |  |  |
Related Party Transactions |  |  |  |
Payments to affiliate for corporate office administrative and general costs | 1,000,000 | 707,000 |  |
Sales and Use Taxes: |  |  |  |
Franchise fees billed to customers and recorded as operating revenue | 867,000 | 871,000 |  |
Non-income tax assessments accounted on a gross basis | $ 3,987,000 | 3,918,000 |  |
GOLDEN STATE WATER COMPANY | Promissory Note |  |  |  |
Related Party Transactions |  |  |  |
Debt instrument, face amount |  |  |  | $ 40,000,000
Debt instrument, maximum borrowing capacity |  |  |  | 40,000,000
GOLDEN STATE WATER COMPANY | Purchase, production, distribution and sale of water |  |  |  |
Nature of Operations: |  |  |  |
Number of customers served | customer | 260 |  |  |
GOLDEN STATE WATER COMPANY | Electricity distribution |  |  |  |
Nature of Operations: |  |  |  |
Number of customers served | customer | 24 |  |  |
ASUS |  |  |  |
Sales and Use Taxes: |  |  |  |
Non-income tax assessments accounted on a gross basis | $ 62,000 | $ 32,000 |  |
ASUS | Promissory Note |  |  |  |
Related Party Transactions |  |  |  |
Debt instrument, face amount |  |  |  | 10,000,000
Debt instrument, maximum borrowing capacity |  |  |  | $ 10,000,000
ASUS | Contracts |  |  |  |
Nature of Operations: |  |  |  |
Period of fixed price contracts to operate and maintain the water and/or wastewater systems at various military bases | 50 years |  |  |
Sales and Use Taxes: |  |  |  |
Period of fixed price contracts to operate and maintain the water and/or wastewater systems at various military bases | 50 years |  |  |
Sales | GOLDEN STATE WATER COMPANY | Purchase, production, distribution and sale of water |  |  |  |
Nature of Operations: |  |  |  |
Percentage of total revenue | 90.00% |  |  |
Notes Receivable [Member] | AWR | Promissory Note |  |  |  |
Sales and Use Taxes: |  |  |  |
Notes Receivable, Related Parties, Current | $ 0 |  |  |

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