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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF PARENT (Details 3) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2010
Condensed financial statements |  |  |  |
Cash Flows From Operating Activities | $ 163,270 us-gaap_NetCashProvidedByUsedInOperatingActivities | $ 135,711 us-gaap_NetCashProvidedByUsedInOperatingActivities | $ 101,494 us-gaap_NetCashProvidedByUsedInOperatingActivities |
Cash Flows From Investing Activities: |  |  |  |
Net cash used | (74,059)us-gaap_NetCashProvidedByUsedInInvestingActivities | (98,775)us-gaap_NetCashProvidedByUsedInInvestingActivities | (68,036)us-gaap_NetCashProvidedByUsedInInvestingActivities |
Payments for Repurchase of Common Stock | (17,180)us-gaap_PaymentsForRepurchaseOfCommonStock | 0 us-gaap_PaymentsForRepurchaseOfCommonStock | 0 us-gaap_PaymentsForRepurchaseOfCommonStock |
Cash Flows From Financing Activities: |  |  |  |
Proceeds from stock option exercises | 589 us-gaap_ProceedsFromStockOptionsExercised | 2,111 us-gaap_ProceedsFromStockOptionsExercised | 13,295 us-gaap_ProceedsFromStockOptionsExercised |
Net change in notes payable to banks | 0 awr_PaymentsForProceedsFromNotesPayableToBank | 0 awr_PaymentsForProceedsFromNotesPayableToBank | (2,000)awr_PaymentsForProceedsFromNotesPayableToBank |
Dividends paid | (32,111)us-gaap_PaymentsOfDividends | (29,360)us-gaap_PaymentsOfDividends | (24,130)us-gaap_PaymentsOfDividends |
Proceeds from (Payments for) Other Financing Activities | (968)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities | (981)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities | (480)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities |
Net cash provided (used) | (51,449)us-gaap_NetCashProvidedByUsedInFinancingActivities | (22,196)us-gaap_NetCashProvidedByUsedInFinancingActivities | (11,287)us-gaap_NetCashProvidedByUsedInFinancingActivities |
Net increase (decrease) in cash and cash equivalents | 37,762 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 14,740 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 22,171 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease |
Cash and cash equivalents, beginning of year | 38,226 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations | 23,486 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations | 1,315 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations |
Cash and cash equivalents, end of year | 75,988 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations | 38,226 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations | 23,486 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations |
AWR |  |  |  |
Condensed financial statements |  |  |  |
Cash Flows From Operating Activities | 61,092 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 32,645 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 16,885 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Cash Flows From Investing Activities: |  |  |  |
Loans (made to)/repaid from, wholly-owned subsidiaries | 19,668 us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (6,100)us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (4,720)us-gaap_ProceedsFromPaymentsForLongTermLoansForRelatedParties / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Net cash used | 19,668 us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (6,100)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (4,720)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Payments for Repurchase of Common Stock | (17,180)us-gaap_PaymentsForRepurchaseOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_PaymentsForRepurchaseOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_PaymentsForRepurchaseOfCommonStock / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Cash Flows From Financing Activities: |  |  |  |
Proceeds from note payable to GSWC | 8,300 us-gaap_ProceedsFromRelatedPartyDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 18,236 us-gaap_ProceedsFromRelatedPartyDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_ProceedsFromRelatedPartyDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Repayment of note payable to GSWC | (8,800)us-gaap_RepaymentsOfRelatedPartyDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (17,736)us-gaap_RepaymentsOfRelatedPartyDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_RepaymentsOfRelatedPartyDebt / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Proceeds from stock option exercises | 589 us-gaap_ProceedsFromStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 2,111 us-gaap_ProceedsFromStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 13,295 us-gaap_ProceedsFromStockOptionsExercised / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Net change in notes payable to banks | 0 awr_PaymentsForProceedsFromNotesPayableToBank / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 awr_PaymentsForProceedsFromNotesPayableToBank / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (2,000)awr_PaymentsForProceedsFromNotesPayableToBank / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Dividends paid | (32,111)us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (29,360)us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (24,130)us-gaap_PaymentsOfDividends / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Proceeds from (Payments for) Other Financing Activities | (36)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Net cash provided (used) | (49,238)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (26,749)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (12,835)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Net increase (decrease) in cash and cash equivalents | 31,522 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (204)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | (670)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Cash and cash equivalents, beginning of year | 107 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 311 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  | 981 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Cash and cash equivalents, end of year | $ 31,629 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 107 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 311 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 981 us-gaap_CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember

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- Definition The net change during the reporting period in amount of notes payable to banks, excluding mortgage notes, initially due beyond one year or beyond the operating cycle if longer. + References No definition available. + Details
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- Definition For the entity and the disposal group, cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. + References No definition available. + Details
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- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450594&loc=d3e33268-110906 + Details
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash inflow or outflow associated with long-term loans for related parties where one party can exercise control or significant influence over another party, including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from (Payments for) Advances to Affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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