American States Water (AWR) 10-Q 5 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Aug. 04, 2014
Document Information [Line Items]	'	'
Entity Registrant Name	'AMERICAN STATES WATER CO	'
Entity Central Index Key	'0001056903	'
Document Type	'10-Q	'
Document Period End Date	30-Jun-14	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	38,709,657
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Jun. 30, 2014	Dec. 31, 2013
Property, Plant and Equipment	'	'
Regulated utility plant, at cost	$1,463,130,000	$1,443,623,000
Non-utility property, at cost	10,895,000	9,519,000
Utility plant, at cost	1,474,025,000	1,453,142,000
Less - Accumulated depreciation	-485,357,000	-471,665,000
Net property, plant and equipment	988,668,000	981,477,000
Other Property and Investments	'	'
Goodwill	1,116,000	1,116,000
Other property and investments	16,118,000	15,806,000
Total other property and investments	17,234,000	16,922,000
Current Assets	'	'
Cash and cash equivalents	77,849,000	38,226,000
Accounts receivable - customers, less allowance for doubtful accounts	25,181,000	23,829,000
Unbilled revenue	20,151,000	18,552,000
Receivable from the U.S. government	3,615,000	7,106,000
Other accounts receivable, less allowance for doubtful accounts	4,235,000	4,914,000
Income taxes receivable	521,000	9,214,000
Materials and supplies, at average cost	3,671,000	4,558,000
Regulatory assets — current	13,607,000	27,676,000
Prepayments and other current assets	4,542,000	2,481,000
Costs and estimated earnings in excess of billings on uncompleted contracts	33,678,000	45,508,000
Deferred income taxes — current	10,800,000	9,553,000
Total current assets	197,850,000	191,617,000
Regulatory and Other Assets	'	'
Regulatory assets	99,698,000	95,005,000
Costs and estimated earnings in excess of billings on uncompleted contracts	7,344,000	7,823,000
Receivable from the U.S. government, less allowance for doubtful accounts	2,976,000	3,104,000
Other	13,322,000	14,235,000
Total regulatory and other assets	123,340,000	120,167,000
Total Assets	1,327,092,000	1,310,183,000
Capitalization	'	'
Common shares, no par value	254,610,000	253,961,000
Earnings reinvested in the business	240,571,000	238,443,000
Total common shareholders’ equity	495,181,000	492,404,000
Long-term debt	310,912,000	326,079,000
Total capitalization	806,093,000	818,483,000
Current Liabilities	'	'
Long-term debt — current	21,291,000	6,298,000
Accounts payable	45,417,000	49,787,000
Income taxes payable	2,808,000	507,000
Accrued other taxes	7,978,000	9,802,000
Accrued employee expenses	9,969,000	10,801,000
Accrued interest	3,894,000	3,897,000
Billings in excess of costs and estimated earnings on uncompleted contracts	14,553,000	6,852,000
Dividends payable	8,260,000	0
Other	13,331,000	12,962,000
Total current liabilities	127,501,000	100,906,000
Other Credits	'	'
Advances for construction	68,394,000	69,332,000
Contributions in aid of construction - net	115,660,000	114,916,000
Deferred income taxes	159,149,000	159,506,000
Unamortized investment tax credits	1,745,000	1,790,000
Accrued pension and other postretirement benefits	41,664,000	38,726,000
Other	6,886,000	6,524,000
Total other credits	393,498,000	390,794,000
Commitments and Contingencies (Note 7)	0	0
Total Capitalization and Liabilities	1,327,092,000	1,310,183,000
GOLDEN STATE WATER COMPANY	'	'
Property, Plant and Equipment	'	'
Utility plant, at cost	1,463,130,000	1,443,623,000
Less - Accumulated depreciation	-479,444,000	-466,329,000
Net property, plant and equipment	983,686,000	977,294,000
Other Property and Investments	'	'
Total other property and investments	13,971,000	13,653,000
Current Assets	'	'
Cash and cash equivalents	43,239,000	37,875,000
Accounts receivable - customers, less allowance for doubtful accounts	25,181,000	23,829,000
Unbilled revenue	20,151,000	18,552,000
Inter-company receivable	382,000	718,000
Other accounts receivable, less allowance for doubtful accounts	2,226,000	3,570,000
Income taxes receivable from Parent	0	9,704,000
Note receivable from Parent	0	500,000
Materials and supplies, at average cost	2,472,000	1,859,000
Regulatory assets — current	13,607,000	27,676,000
Prepayments and other current assets	3,733,000	2,218,000
Deferred income taxes — current	9,618,000	8,573,000
Total current assets	120,609,000	135,074,000
Regulatory and Other Assets	'	'
Regulatory assets	99,698,000	95,005,000
Other accounts receivable	0	913,000
Other	11,483,000	11,442,000
Total regulatory and other assets	111,181,000	107,360,000
Total Assets	1,229,447,000	1,233,381,000
Capitalization	'	'
Common shares, no par value	233,986,000	233,721,000
Earnings reinvested in the business	200,635,000	203,892,000
Total common shareholders’ equity	434,621,000	437,613,000
Long-term debt	310,912,000	326,079,000
Total capitalization	745,533,000	763,692,000
Current Liabilities	'	'
Long-term debt — current	21,291,000	6,298,000
Accounts payable	35,103,000	37,611,000
Income taxes payable	913,000	0
Accrued other taxes	7,698,000	9,299,000
Accrued employee expenses	8,712,000	9,536,000
Accrued interest	3,894,000	3,897,000
Other	13,220,000	12,880,000
Total current liabilities	90,831,000	79,521,000
Other Credits	'	'
Advances for construction	68,394,000	69,332,000
Contributions in aid of construction - net	115,660,000	114,916,000
Deferred income taxes	158,877,000	158,994,000
Unamortized investment tax credits	1,745,000	1,790,000
Accrued pension and other postretirement benefits	41,664,000	38,726,000
Other	6,743,000	6,410,000
Total other credits	393,083,000	390,168,000
Commitments and Contingencies (Note 7)	0	0
Total Capitalization and Liabilities	$1,229,447,000	$1,233,381,000

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accounts receivable - customers, allowance for doubtful accounts	$786	$755
Other accounts receivable, allowance for doubtful accounts	363	432
GOLDEN STATE WATER COMPANY	'	'
Accounts receivable - customers, allowance for doubtful accounts	786	755
Other accounts receivable, allowance for doubtful accounts	$354	$359

CONSOLIDATED_STATEMENTS_OF_INC

CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Operating Revenues	'	'	'	'
Water	$86,232	$84,069	$156,989	$153,302
Electric	8,328	8,397	18,784	19,131
Contracted services	21,081	28,229	41,813	58,814
Total operating revenues	115,641	120,695	217,586	231,247
Operating Expenses	'	'	'	'
Water purchased	16,263	16,670	27,487	27,402
Power purchased for pumping	2,570	2,332	4,534	3,971
Groundwater production assessment	4,853	3,823	8,393	7,010
Power purchased for resale	1,988	2,828	4,687	6,508
Supply cost balancing accounts	-106	-377	712	994
Other operation	7,085	6,519	14,032	11,973
Administrative and general	19,407	18,113	39,591	36,020
Depreciation and amortization	10,525	9,768	21,055	19,584	[1]
Maintenance	4,327	4,913	7,816	8,847
Property and other taxes	3,965	3,748	8,290	7,896
ASUS construction	13,764	19,064	27,221	39,797
Net gain on sale of property	'	'	0	-12
Total operating expenses	84,641	87,401	163,818	169,990
Operating Income	31,000	33,294	53,768	61,257
Other Income and Expenses	'	'	'	'
Interest expense	-5,778	-5,768	-11,405	-11,546
Interest income	123	140	235	327
Other, net	271	84	396	426
Total other income and expenses	-5,384	-5,544	-10,774	-10,793
Income from operations before income tax expense	25,616	27,750	42,994	50,464
Income tax expense	10,262	11,148	16,619	20,397
Net Income (Loss) Attributable to Parent	15,354	16,602	26,375	30,067
Weighted Average Number of Common Shares Outstanding (in shares)	38,781	38,612	38,764	38,570
Basic Earnings Per Common Share (in dollars per share)	$0.39	$0.43	$0.68	$0.77
Weighted Average Number of Diluted Shares (in shares)	39,001	38,692	38,974	38,648
Fully Diluted Earnings Per Common Share (in dollars per share)	$0.39	$0.43	$0.67	$0.77
Dividends Paid Per Common Share (in dollars per share)	$0.20	$0.18	$0.41	$0.36
GOLDEN STATE WATER COMPANY	'	'	'	'
Operating Revenues	'	'	'	'
Water	86,232	84,069	156,989	153,302
Electric	8,328	8,397	18,784	19,131
Total operating revenues	94,560	92,466	175,773	172,433
Operating Expenses	'	'	'	'
Water purchased	16,263	16,670	27,487	27,402
Power purchased for pumping	2,570	2,332	4,534	3,971
Groundwater production assessment	4,853	3,823	8,393	7,010
Power purchased for resale	1,988	2,828	4,687	6,508
Supply cost balancing accounts	-106	-377	712	994
Other operation	6,448	5,842	12,804	10,639
Administrative and general	16,424	15,166	33,409	29,400
Depreciation and amortization	10,232	9,484	20,472	19,006
Maintenance	3,783	4,365	6,844	7,858
Property and other taxes	3,530	3,375	7,426	7,091
Total operating expenses	65,985	63,508	126,768	119,879
Operating Income	28,575	28,958	49,005	52,554
Other Income and Expenses	'	'	'	'
Interest expense	-5,721	-5,726	-11,332	-11,474
Interest income	113	140	222	318
Other, net	272	85	396	427
Total other income and expenses	-5,336	-5,501	-10,714	-10,729
Income from operations before income tax expense	23,239	23,457	38,291	41,825
Income tax expense	9,783	9,643	15,488	17,306
Net Income (Loss) Attributable to Parent	$13,456	$13,814	$22,803	$24,519
[1]	Depreciation expense computed on GSWCbs transportation equipment of $225,000 and $218,000 for the three months ended JuneB 30, 2014 and 2013, respectively, and $497,000 and $468,000 for the six months ended JuneB 30, 2014 and 2013, respectively, is recorded in administrative and general expenses.

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOW (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Cash Flows From Operating Activities:	'	'
Net income	$26,375	$30,067
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	21,552	20,052
Provision for doubtful accounts	604	437
Deferred income taxes and investment tax credits	-1,653	5,789
Stock-based compensation expense	1,399	1,135
Other b net	69	-159
Changes in assets and liabilities:	'	'
Accounts receivable b customers	-1,907	-8,339
Unbilled revenue	-1,599	-3,984
Other accounts receivable	1,543	-221
Receivable from the U.S. government	3,619	7,244
Materials and supplies	887	-772
Prepayments and other current assets	-2,061	202
Regulatory assets b supply cost balancing accounts	712	994
Costs and estimated earnings in excess of billings on uncompleted contracts	12,309	-16,855
Other assets (including other regulatory assets)	8,120	-14,307
Accounts payable	1,019	5,979
Income taxes receivable/payable	10,994	14,472
Billings in excess of costs and estimated earnings on uncompleted contracts	7,701	-10,273
Accrued pension and other postretirement benefits	3,125	3,733
Other liabilities	-1,928	-1,574
Net cash provided	90,880	33,620
Cash Flows From Investing Activities:	'	'
Construction expenditures	-35,620	-41,189
Other investments	-195	-200
Proceed from sale of property	0	12
Net cash used	-35,815	-41,377
Cash Flows From Financing Activities:	'	'
Proceeds from issuance of common shares and stock option exercises	219	1,832
Repurchase of common shares	-306	0
Receipt of advances for and contributions in aid of construction	4,174	8,283
Refunds on advances for construction	-2,518	-2,712
Repayments of long-term debt	-174	-109
Proceeds from the issuance of long-term debt	0	60
Dividends paid	-15,699	-13,684
Other b net	-1,138	-874
Net cash used	-15,442	-7,204
Net change in cash and cash equivalents	39,623	-14,961
Cash and cash equivalents, beginning of period	38,226	23,486
Cash and cash equivalents, end of period	77,849	8,525
GOLDEN STATE WATER COMPANY	'	'
Cash Flows From Operating Activities:	'	'
Net income	22,803	24,519
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	20,969	19,474
Provision for doubtful accounts	667	411
Deferred income taxes and investment tax credits	-1,219	5,868
Stock-based compensation expense	973	835
Other b net	34	-17
Changes in assets and liabilities:	'	'
Accounts receivable b customers	-1,907	-8,339
Unbilled revenue	-1,599	-3,984
Other accounts receivable	2,145	1,186
Materials and supplies	-613	-33
Prepayments and other current assets	-1,515	567
Regulatory assets b supply cost balancing accounts	712	994
Other assets (including other regulatory assets)	8,124	-14,262
Accounts payable	2,968	5,166
Inter-company receivable/payable	336	-2,637
Income taxes receivable/payable from/to Parent	10,617	12,495
Accrued pension and other postretirement benefits	3,125	3,733
Other liabilities	-1,756	-1,358
Net cash provided	64,864	44,618
Cash Flows From Investing Activities:	'	'
Construction expenditures	-34,331	-41,021
Note receivable from AWR parent	-8,300	-9,200
Receipt of payment of note receivable from AWR parent	8,800	0
Other investments	-195	-200
Net cash used	-34,026	-50,421
Cash Flows From Financing Activities:	'	'
Receipt of advances for and contributions in aid of construction	4,174	8,283
Refunds on advances for construction	-2,518	-2,712
Repayments of long-term debt	-174	-109
Proceeds from the issuance of long-term debt	0	60
Dividends paid	-26,000	-13,600
Other b net	-956	-708
Net cash used	-25,474	-8,786
Net change in cash and cash equivalents	5,364	-14,589
Cash and cash equivalents, beginning of period	37,875	22,578
Cash and cash equivalents, end of period	$43,239	$7,989

Summary_of_Significant_Account

Summary of Significant Accounting Policies:	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	Summary of Significant Accounting Policies:
	Nature of Operations: American States Water Company (“AWR”) is the parent company of Golden State Water Company (“GSWC”) and American States Utility Services, Inc. (“ASUS”) (and its subsidiaries, Fort Bliss Water Services Company (“FBWS”), Terrapin Utility Services, Inc. (“TUS”), Old Dominion Utility Services, Inc. (“ODUS”), Palmetto State Utility Services, Inc. (“PSUS”) and Old North Utility Services, Inc. (“ONUS”)).  The subsidiaries of ASUS may be collectively referred to herein as the “Military Utility Privatization Subsidiaries.”
	GSWC is a public utility engaged principally in the purchase, production, distribution and sale of water in California serving approximately 257,000 customers. GSWC also distributes electricity in several San Bernardino County mountain communities in California serving approximately 24,000 customers through its Bear Valley Electric Service (“BVES”) division. Although Registrant has a diversified base of residential, industrial and other customers, revenues derived from commercial and residential water customers accounted for approximately 90% of total water revenues during the three and six months ended June 30, 2014 and 2013. The California Public Utilities Commission (“CPUC”) regulates GSWC’s water and electric businesses, in matters including properties, rates, services, facilities and other matters, and transactions by GSWC with its affiliates.  AWR’s assets and operating income are primarily those of GSWC.
	ASUS, through its wholly-owned subsidiaries, operates, maintains and performs construction activities (including renewal and replacement capital work) on water and/or wastewater systems at various United States military bases pursuant to 50-year firm fixed-price contracts. These contracts are subject to periodic price redeterminations and modifications for changes in circumstances and changes in laws and regulations.
	There is no direct regulatory oversight by the CPUC over AWR or the operation, rates or services provided by ASUS or any of its wholly owned subsidiaries.
	Basis of Presentation: The consolidated financial statements and notes thereto are being presented in a combined report being filed by two separate Registrants: AWR and GSWC. References in this report to “Registrant” are to AWR and GSWC, collectively, unless otherwise specified.
	The consolidated financial statements of AWR include the accounts of AWR and its subsidiaries, all of which are wholly owned. These financial statements are prepared in conformity with accounting principles generally accepted in the United States of America. Inter-company transactions and balances have been eliminated in the AWR consolidated financial statements.
	On May 20, 2013, AWR's Board of Directors approved a two-for-one stock split of the Company's common shares.  In September 2013, shareholders of record received one additional share for each AWR common share they owned.  This two-for-one stock split has been retroactively applied to these financial statements, resulting in an increase in the number of shares outstanding for all periods presented.
	The consolidated financial statements included herein have been prepared by Registrant, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”).  The December 31, 2013 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by generally accepted accounting principles ("GAAP"). The preparation of the consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, all adjustments consisting of normal, recurring items and estimates necessary for a fair statement of the results for the interim periods have been made. It is suggested that these consolidated financial statements be read in conjunction with the consolidated financial statements and the notes thereto included in the Form 10-K for the year ended December 31, 2013 filed with the SEC.
	GSWC's Related Party Transactions: In May 2013, AWR issued an interest bearing promissory note (the "Note") to GSWC for $20.0 million which expires on May 23, 2018. Under the terms of the Note, AWR may borrow from GSWC amounts up to $20.0 million for working capital purposes. AWR agrees to pay any unpaid principal amounts outstanding under the Note, plus accrued interest. As of June 30, 2014, AWR had no amounts outstanding to GSWC under this Note.
	GSWC and ASUS provide and receive various services to and from their parent, AWR, and among themselves. In addition, AWR has a $100.0 million syndicated credit facility. AWR borrows under this facility and provides funds to its subsidiaries, including GSWC, in support of their operations.  The interest rate charged to GSWC and ASUS is sufficient to cover AWR’s interest cost under the credit facility. GSWC also allocates certain corporate office administrative and general costs to its affiliate, ASUS, using allocation factors approved by the CPUC.  Amounts owed to GSWC by its parent, AWR, or for allocated expenses are included in inter-company receivables as of June 30, 2014 and December 31, 2013.
	Notes Payable to Banks: On May 23, 2013, AWR entered into a fourth amendment to its revolving credit agreement to, among other things, extend the expiration date of the syndicated credit facility to May 23, 2018, reduce the amount of interest and fees paid by the Company, and update certain representations and covenants in the credit agreement.  The aggregate amount that may be borrowed under this facility is unchanged at $100.0 million.  The Company may, under the terms of the fourth amendment, elect to increase the aggregate commitment by up to an additional $50.0 million. As of June 30, 2014, there were no borrowings outstanding under this credit facility.
	Long-term debt: In June 2014, GSWC issued a notice of redemption of its $5,000,000, 6.87% Medium-Term Notes Series A due 2023, and $10,000,000, 7.00% Medium-Term Notes Series A also due 2023. On July 15, 2014, these notes were redeemed and; accordingly, are included on the balance sheet as of June 30, 2014 in the current portion of long-term debt. The notes were redeemed at a price of 100% of the outstanding principal amount of the Notes, plus interest.
	Sales and Use Taxes:  GSWC bills certain sales and use taxes levied by state or local governments to its customers. Included in these sales and use taxes are franchise fees, which GSWC pays to various municipalities (based on ordinances adopted by these municipalities) in order to use public right of way for utility purposes. GSWC bills these franchise fees to its customers based on a CPUC-authorized rate. These franchise fees, which are required to be paid regardless of GSWC’s ability to collect from the customer, are accounted for on a gross basis. GSWC’s franchise fees billed to customers and recorded as operating revenue were approximately $975,000 and $947,000 for the three months ended June 30, 2014 and 2013, respectively, and $1.8 million million for the six months ended June 30, 2014 and 2013. When GSWC acts as an agent, and the tax is not required to be remitted if it is not collected from the customer, the taxes are accounted for on a net basis.
	Depending on the state in which the operations are conducted, ASUS and its subsidiaries are also subject to certain state non-income tax assessments generally computed on a “gross receipts” or “gross revenues” basis.  These non-income tax assessments are required to be paid regardless of whether the subsidiary is reimbursed by the U.S. government for these assessments under its 50-year contracts with the U.S. government.  The non-income tax assessments are accounted for on a gross basis and totaled $157,000 and $169,000 during the three months ended June 30, 2014 and 2013, respectively, and $306,000 and $331,000 for the six months ended June 30, 2014 and 2013, respectively.
	Recently Issued Accounting Pronouncements: In May 2014, the Financial Accounting Standards Board issued updated accounting guidance on revenue recognition. The updated guidance includes specific steps required to recognize revenue on contracts with customers. For Registrant, the updated guidance is effective for reporting periods beginning after December 15, 2016. Registrant is currently evaluating the impact of this guidance, but does not expect it to have a material impact on its consolidated financial statements.
	In June 2014, the Financial Accounting Standards Board issued updated accounting guidance on share-based compensation.  The update includes explicit guidance on how to account for share-based payment awards whereby a performance target could be achieved after an employee completes the requisite service period.  For Registrant, the updated guidance is effective for reporting periods beginning after December 15, 2015.  Registrant is currently evaluating the impact of this guidance, but does not expect it to have a material impact on its consolidated financial statements.

Regulatory_Matters

Regulatory Matters:	6 Months Ended
	Jun. 30, 2014
Regulated Operations [Abstract]	'
Regulatory Matters	'
	Regulatory Matters:
	In accordance with accounting principles for rate-regulated enterprises, Registrant records regulatory assets, which represent probable future recovery of costs from customers through the ratemaking process, and regulatory liabilities, which represent probable future refunds that are to be credited to customers through the ratemaking process. At June 30, 2014, Registrant had approximately $35.7 million of regulatory assets, net of regulatory liabilities, not accruing carrying costs. Of this amount, $15.0 million relates to the underfunding of pension and other post-retirement obligations and $16.2 million relates to deferred income taxes representing accelerated tax benefits flowed through to customers, which will be included in rates concurrently with recognition of the associated future tax expense. The remainder relates to other items that do not provide for or incur carrying costs.
	Regulatory assets represent costs incurred by GSWC for which it has received or expects to receive rate recovery in the future. In determining the probability of costs being recognized in other periods, GSWC considers regulatory rules and decisions, past practices, and other facts or circumstances that would indicate if recovery is probable. If the CPUC determines that a portion of GSWC’s assets are not recoverable in customer rates, GSWC must determine if it has suffered an asset impairment that would require a write-down in the assets’ valuation. Regulatory assets, less regulatory liabilities, included in the consolidated balance sheets are as follows:
	(dollars in thousands)	June 30,			December 31,
		2014			2013
	GSWC
	Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account	$	17,543		$	16,345
	Base Revenue Requirement Adjustment Mechanism	9,966			8,725
	Costs deferred for future recovery on Aerojet case	14,302			14,763
	Pensions and other post-retirement obligations (Note 6)	18,568			20,241
	Flow-through taxes, net (Note 5)	16,201			16,189
	Low income rate assistance balancing accounts	9,747			9,979
	General rate case memorandum accounts	9,868			15,645
	Other regulatory assets	20,066			25,086
	Various refunds to customers	(2,956		)	(4,292		)
	Total	$	113,305		$	122,681
	Regulatory matters are discussed in detail in the consolidated financial statements and the notes thereto included in the Form 10-K for the year ended December 31, 2013 filed with the SEC. The discussion below focuses on significant matters and developments since December 31, 2013.
	Alternative-Revenue Programs:
	GSWC records the difference between what it bills its water customers and that which is authorized by the CPUC using the Water Revenue Adjustment Mechanism (“WRAM”) and Modified Cost Balancing Account (“MCBA”) accounts approved by the CPUC.  GSWC has implemented surcharges to recover all of its WRAM, net of the MCBA balances, as of December 31, 2013.  The recovery or refund of the WRAM is netted against the MCBA over- or under-collection for the corresponding rate-making area and is interest bearing at the current 90-day commercial paper rate.  Based on CPUC guidelines, recovery periods relating to the majority of GSWC’s WRAM/MCBA balances range between 18 and 24 months.  For the three months ended June 30, 2014 and 2013, surcharges of approximately $4.5 million and $7.1 million, respectively, were billed to customers to recover previously incurred under-collections in the WRAM, net of MCBA accounts, and surcharges (net of surcredits) of approximately $6.4 million and $10.6 million were billed to customers during the six months ended June 30, 2014 and 2013, respectively.  As of June 30, 2014, GSWC has a net aggregated regulatory asset of $17.5 million which is comprised of a $15.8 million under-collection in the WRAM accounts and $1.7 million under-collection in the MCBA accounts.
	For BVES, the CPUC approved the Base Revenue Requirement Adjustment Mechanism (“BRRAM”) which adjusts certain revenues to adopted levels.  Pending a final decision on the BVES general rate case, the 2013 and 2014 BRRAM balances have been recorded using 2012 adopted levels authorized by the CPUC. As of June 30, 2014, GSWC had a regulatory asset of $10.0 million under-collection in the BRRAM.
	General Rate Case Memorandum Accounts:
	The balance in the general rate case memorandum accounts represents the revenue differences between interim rates and final rates authorized by the CPUC due to delays in receiving decisions on various general rate case applications. As of June 30, 2014, there is an aggregate $9.9 million in the general rate case memorandum accounts, $5.8 million of which is for retroactive rate increases effective January 1, 2013 as a result of the final decision issued by the CPUC in May 2013 on GSWC’s water general rate case. Surcharges ranging from 12 to 24 months, with the majority being 12 months, were implemented during the third quarter of 2013 to recover the retroactive adopted revenues related to the May 2013 CPUC decision.
	Other Regulatory Matters:
	CPUC Approval to Serve New Area:
	On June 26, 2014, the CPUC approved a Certificate of Public Convenience and Necessity application granting GSWC approval to provide water utility services to an area to be developed near Sacramento, in Sutter County, California, called Sutter Pointe. The CPUC's decision approved a settlement that was jointly filed by GSWC, Sutter County, the Sutter Pointe Developers, and a coalition of Sutter County residents. With the CPUC's approval, GSWC will create a water service district to supply the Sutter Pointe development with groundwater and surface water from the Sacramento River. The project will involve the construction of underground infrastructure, groundwater wells, a water treatment plant and storage facilities to serve retail, industrial and approximately 17,000 residential customers at final build out. As part of the agreement, GSWC will also request approval from the CPUC to acquire the water system that currently serves the community of Robbins in Sutter County.
	CPUC Rehearing Matter:
	In July 2011, the CPUC issued an order granting the rehearing of certain issues from the Region II, Region III and general office rate case approved in November 2010.  Among the issues in the rehearing was the La Serena plant improvement project included in rate base totaling approximately $3.5 million.  As a result of the CPUC's November 2010 decision, GSWC recorded a $2.2 million pretax charge during 2010, which included a disallowance of a portion of the La Serena capital costs and the related revenues earned on those capital costs to be refunded to customers. In March 2013, GSWC and the Office of Ratepayer Advocates ("ORA") reached a settlement agreement.  In March 2013, GSWC filed for CPUC approval of the settlement agreement. The settlement agreement, if approved, will resolve all issues arising from the rehearing. As a result of the settlement agreement reached in March 2013, GSWC recorded a pretax charge during 2012 totaling $416,000 for an additional disallowance of the La Serena capital costs and the related revenues earned on those capital costs to be refunded to customers.
	Procurement Audits:
	In December 2011, the CPUC issued a final decision on its investigation of certain work orders and charges paid to a specific contractor used previously for numerous construction projects. As part of the CPUC decision, GSWC agreed to be subject to three separate independent audits of its procurement practices over a period of ten years from the date the settlement was approved by the CPUC.  The audits will cover GSWC’s procurement practices related to contracts with other contractors from 1994 forward and could result in disallowances of costs. The cost of the audits will be borne by shareholders and may not be recovered by GSWC in rates to customers. The first audit is currently underway. At this time, management cannot predict the outcome of these audits or determine an estimated loss or range of loss, if any, resulting from these audits.
	BVES General Rate Case:
	In February 2012, BVES filed its general rate case (“GRC”) for new rates in years 2013 through 2016.  In August 2012, ORA issued its report on the GRC, which included recommendations for BVES to record a retroactively ratemaking increase to its accumulated depreciation balance, and to write-off one-half of its deferred rate case costs. On May 7, 2014, GSWC filed a settlement agreement with the CPUC that has been reached with all parties involved in the BVES general rate case. The settlement agreement, if approved, would resolve all matters in the pending electric rate case for rates in years 2013 through 2016. As a result of this settlement, GSWC does not believe any loss is probable with respect to ORA's recommendations; therefore, no provision for loss has been recorded in the financial statements as of June 30, 2014. A final decision from the CPUC is expected in late 2014. The settlement, once approved, will not have a significant impact on GSWC's financial statements. Pending a final decision on the BVES rate case, electric revenues have been recorded using 2012 adopted levels authorized by the CPUC.

Earnings_per_ShareCapital_Stoc

Earnings per Share/Capital Stock:	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Earnings per Share/Capital Stock	'
	Earnings per Share/Capital Stock:
	In accordance with the accounting guidance for participating securities and earnings per share (“EPS”), Registrant uses the “two-class” method of computing EPS. The “two-class” method is an earnings allocation formula that determines EPS for each class of common stock and participating security. AWR has participating securities related to its stock-based awards that earn dividend equivalents on an equal basis with AWR’s Common Shares (the “Common Shares”).  In applying the “two-class” method, undistributed earnings are allocated to both common shares and participating securities.
	The following is a reconciliation of Registrant’s net income and weighted average Common Shares outstanding used for calculating basic net income per share:
	Basic:	For The Three Months Ended June 30,				For The Six Months Ended
						June 30,
	(in thousands, except per share amounts)	2014		2013		2014		2013
	Net income	$	15,354	$	16,602	$	26,375	$	30,067
	Less: (a) Distributed earnings to common shareholders	7,853		6,854		15,699		13,693
	Distributed earnings to participating securities	47		95		87		181
	Undistributed earnings	7,454		9,653		10,589		16,193
	(b) Undistributed earnings allocated to common shareholders	7,411		9,522		10,530		15,982
	Undistributed earnings allocated to participating securities	43		131		59		211
	Total income available to common shareholders, basic (a)+(b)	$	15,264	$	16,376	$	26,229	$	29,675
	Weighted average Common Shares outstanding, basic	38,781		38,612		38,764		38,570
	Basic earnings per Common Share	$	0.39	$	0.43	$	0.68	$	0.77
	Diluted EPS is based upon the weighted average number of Common Shares, including both outstanding shares and shares potentially issuable in connection with stock options granted under Registrant’s 2000 and 2008 Stock Incentive Plans, the 2003 Non-Employee Directors Plan, and net income. At June 30, 2014 and 2013, there were 245,784 and 281,668 options outstanding, respectively, under these Plans. At June 30, 2014 and 2013, there were also 239,226 and 260,906 restricted stock units outstanding, respectively, under these plans and the 2013 Non-Employee Directors Plan.
	The following is a reconciliation of Registrant’s net income and weighted average Common Shares outstanding for calculating diluted net income per share:
	Diluted:	For The Three Months Ended June 30,				For The Six Months Ended
						June 30,
	(in thousands, except per share amounts)	2014		2013		2014		2013
	Common shareholders earnings, basic	$	15,264	$	16,376	$	26,229	$	29,675
	Undistributed earnings for dilutive stock options	43		—		59		—
	Total common shareholders earnings, diluted	$	15,307	$	16,376	$	26,288	$	29,675
	Weighted average common shares outstanding, basic	38,781		38,612		38,764		38,570
	Stock-based compensation (1)	220		80		210		78
	Weighted average common shares outstanding, diluted	39,001		38,692		38,974		38,648
	Diluted earnings per Common Share	$	0.39	$	0.43	$	0.67	$	0.77
	(1)       In applying the treasury stock method of reflecting the dilutive effect of outstanding stock-based compensation in the calculation of diluted EPS, 245,784 and 281,668 stock options at June 30, 2014 and 2013, respectively, were deemed to be outstanding in accordance with accounting guidance on earnings per share.  All of the 239,226 and 260,906 restricted stock units at June 30, 2014 and 2013, respectively, were included in the calculation of diluted EPS for the six months ended June 30, 2014 and 2013.
	No stock options outstanding at June 30, 2014 had an exercise price greater than the average market price of AWR’s Common Shares for the six months ended June 30, 2014. There were no stock options outstanding at June 30, 2014 or 2013 that were anti-dilutive.
	During the six months ended June 30, 2014 and 2013, Registrant issued 70,573 and 208,986 Common Shares, for approximately $219,000 and $1,832,000, respectively, under Registrant’s Common Share Purchase and Dividend Reinvestment Plan (“DRP”), the 401(k) Plan, the 2000 and 2008 Stock Incentive Plans, and the 2003 and 2013 Non-Employee Directors Stock Plans. In addition, Registrant purchased 192,188 and 481,224 common shares on the open market during the six months ended June 30, 2014 and 2013, respectively, under Registrant’s 401(k) Plan and the DRP. On March 27, 2014, AWR's Board of Directors approved a stock repurchase program, authorizing the Company to repurchase up to 1.25 million shares of the Company's common shares from time to time through June 30, 2016. Pursuant to this program, Registrant repurchased an additional 9,300 common shares on the open market in the second quarter of 2014.
	During the three months ended June 30, 2014 and 2013, AWR paid quarterly dividends of approximately $7.9 million, or $0.2025 per share, and $6.8 million, or $0.1775 per share, respectively. During the six months ended June 30, 2014 and 2013 AWR paid quarterly dividends to shareholders of approximately $15.7 million, or $0.405 per share, and $13.7 million, or $0.355 per share, respectively.
	On May 19, 2014, AWR's Board of Directors declared and approved a 5.2% increase in AWR's third quarter cash dividend from $0.2025 to $0.2130 per share on the common shares of the Company. Dividends on the common shares will be payable on September 2, 2014 to shareholders of record at the close of business on August 15, 2014.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments:	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments:
	For cash and cash equivalents, accounts receivable, accounts payable and short-term debt, the carrying amount is assumed to approximate fair value due to the short-term nature of the amounts. Investments held in a Rabbi Trust for the supplemental executive retirement plan are measured at fair value and totaled $7.2 million as of June 30, 2014. All equity investments in the Rabbi Trust are Level 1 investments in mutual funds. The investments held in the Rabbi Trust are included in Other Property and Investments on Registrant's balance sheets. As a result of the expiration in November 2013 of BVES's purchased power contracts, Registrant has no derivative instruments as of June 30, 2014 and December 31, 2013.
	The accounting guidance for fair value measurements applies to all financial assets and financial liabilities that are being measured and reported on a fair value basis. Under the accounting guidance, GSWC makes fair value measurements that are classified and disclosed in one of the following three categories:
	Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;
	Level 2: Quoted prices in markets that are not active or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or liability; or
	Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity).
	The table below estimates the fair value of long-term debt held by GSWC. The fair values as of June 30, 2014 and December 31, 2013 have been determined using rates for similar financial instruments of the same duration utilizing level 2 methods and assumptions. The interest rates used for the June 30, 2014 valuation increased as compared to December 31, 2013, decreasing the fair value of long-term debt as of June 30, 2014. Changes in the assumptions will produce differing results.
		30-Jun-14				31-Dec-13
	(dollars in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	Financial liabilities:
	Long-term debt—GSWC	$	332,203	$	421,028	$	332,377	$	412,590

Income_Taxes

Income Taxes:	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes:
	As a regulated utility, GSWC treats certain temporary differences as flow-through adjustments in computing its income tax provision consistent with the income tax approach approved by the CPUC for ratemaking purposes. Flow-through adjustments increase or decrease tax expense in one period, with an offsetting decrease or increase occurring in another period. Giving effect to these temporary differences as flow-through adjustments typically results in a greater variance between the effective tax rate (“ETR”) and the statutory federal income tax rate in any given period than would otherwise exist if GSWC were not required to account for its income taxes as a regulated enterprise.  The GSWC ETR was 42.1% and 41.1% for the three months ended June 30, 2014 and 2013, respectively and 40.4% and 41.4% for the six months ended June 30, 2014 and 2013, respectively. The GSWC ETRs deviated from the statutory rate primarily due to state taxes and differences between book and taxable income that are treated as flow-through adjustments in accordance with regulatory requirements (primarily related to plant, rate-case and compensation items), as well as permanent items.
	Changes in Tax Law:
	In September 2013, the U.S. Treasury Department issued final regulations related to the tax treatment of tangible property, including guidance on expensing certain repair and maintenance expenditures.  The regulations are effective for tax years beginning on or after January 1, 2014. Registrant’s current tax treatment of tangible property continues to be permitted; however, Registrant is evaluating its water-pipeline tax repair-cost method, as well as other tax-method changes pursuant to these regulations. If Registrant adopts new methods, the impact to total income tax expense and the effective tax rate is not expected to be significant.
	In January 2013, the American Taxpayer Relief Act of 2012 extended 50% bonus depreciation for qualifying property through 2013.  Although this change in law reduced AWR’s current taxes payable, it did not reduce its total income tax expense or ETR.

Employee_Benefit_Plans

Employee Benefit Plans:	6 Months Ended
	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	Employee Benefit Plans:
	The components of net periodic benefit costs, before allocation to the overhead pool, for Registrant’s pension plan, postretirement plan and Supplemental Executive Retirement Plan ("SERP") for the three and six months ended June 30, 2014 and 2013 are as follows:
		For The Three Months Ended June 30,
		Pension Benefits						Other						SERP
								Postretirement
								Benefits
	(dollars in thousands)	2014			2013			2014			2013			2014		2013
	Components of Net Periodic Benefits Cost:
	Service cost	$	1,335		$	1,620		$	99		$	106		$	192	$	201
	Interest cost	1,845			1,723			130			113			154		129
	Expected return on plan assets	(2,235		)	(1,895		)	(113		)	(95		)	—		—
	Amortization of transition	—			—			104			105			—		—
	Amortization of prior service cost (benefit)	29			30			(50		)	(50		)	40		40
	Amortization of actuarial (gain) loss	(7		)	729			(66		)	—			35		85
	Net periodic pension cost under accounting standards	967			2,207			104			179			421		455
	Regulatory adjustment — deferred	449			(409		)	—			—			—		—
	Total expense recognized, before allocation to overhead pool	$	1,416		$	1,798		$	104		$	179		$	421	$	455
		For The Six Months Ended June 30,
		Pension Benefits						Other						SERP
								Postretirement
								Benefits
	(dollars in thousands)	2014			2013			2014			2013			2014		2013
	Components of Net Periodic Benefits Cost:
	Service cost	$	2,822		$	3,484		$	198		$	212		$	384	$	402
	Interest cost	3,760			3,454			260			226			308		258
	Expected return on plan assets	(4,450		)	(3,788		)	(226		)	(190		)	—		—
	Amortization of transition	—			—			208			210			—		—
	Amortization of prior service cost (benefit)	59			60			(100		)	(100		)	80		80
	Amortization of actuarial (gain) loss	—			1,440			(132		)	—			70		170
	Net periodic pension cost under accounting standards	2,191			4,650			208			358			842		910
	Regulatory adjustment — deferred	749			(919		)	—			—			—		—
	Total expense recognized, before allocation to overhead pool	$	2,940		$	3,731		$	208		$	358		$	842	$	910
	Registrant expects to contribute approximately $8.2 million to the pension plan during 2014.
	Regulatory Adjustment:
	In May 2013, the CPUC issued a final decision that authorized GSWC to establish a two-way balancing account for its water regions and the general office to track differences between the forecasted annual pension expenses adopted in rates and the actual annual expense recorded by GSWC in accordance with the accounting guidance for pension costs.  As of June 30, 2014, GSWC has a $3.6 million under-collection in the two-way pension balancing account included as part of the pension regulatory asset (Note 2).
	Affordable Care Act:
	In 2010, the Patient Protection and Affordable Care Act ("Affordable Care Act") was passed and was to become effective in 2014.  In July 2013, compliance with the employer mandate and certain reporting requirements under the Affordable Care Act were delayed until 2015. Registrant’s health care plan meets the current requirements of the Affordable Care Act for the majority of its employees. Registrant is evaluating alternatives to address those employees for which the plan may not currently meet the requirements. Registrant continues to assess the impact of the Affordable Care Act on its health care benefit costs, but does not expect it to have a material impact in the near future on Registrant's consolidated financial position, results of operations or cash flows.

Contingencies

Contingencies:	6 Months Ended
	Jun. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Contingencies	'
	Contingencies:
	Condemnation of Properties:
	The laws of the State of California provide for the acquisition of public utility property by governmental agencies through their power of eminent domain, also known as condemnation, where doing so is necessary and in the public interest. In addition, these laws provide: (i) that the owner of utility property may contest whether the condemnation is actually necessary and in the public interest, and (ii) that the owner is entitled to receive the fair market value of its property if the property is ultimately taken.
	Claremont System:
	The City of Claremont ("Claremont" or "the City") located in GSWC’s Region III, has expressed various concerns to GSWC about rates charged by GSWC and the effectiveness of the CPUC’s rate-setting procedures. In November 2012 and again in September 2013, Claremont made an offer to acquire GSWC’s water system servicing Claremont. GSWC rejected both offers and informed the City that the system is not for sale.  Claremont continues to express a desire to potentially take the system by eminent domain.
	On July 31, 2014, the City passed a resolution calling for a special election to be held November 4, 2014 for the purpose of authorizing the issuance of $135.0 million in water revenue bonds by the City to finance the acquisition of the system. GSWC serves approximately 11,000 customers in Claremont.
	Ojai System:
	In April 2011, an organization called Ojai FLOW ("Friends of Locally Owned Water") started a local campaign for the Casitas Municipal Water District ("CMWD") to purchase GSWC’s Ojai water system.  In March 2013, CMWD passed resolutions authorizing the establishment of a Community Facilities District, an entity authorized pursuant to the Mello-Roos Community Facilities District Act of 1982 ("Mello-Roos Act") and the issuance of bonds to finance the potential acquisition of GSWC’s Ojai system by eminent domain. In August 2013, Ojai residents approved the levying of a special tax to satisfy the planned bond obligations. GSWC filed a petition in the Superior Court, Ventura County, which, among other things, challenged the legality of CMWD’s effort to utilize the Mello-Roos Act to acquire property by eminent domain and to fund legal and expert costs of the planned condemnation. Ojai FLOW members filed a motion with the Superior Court asking that all residents of GSWC’s Ojai service area be certified as class defendants in GSWC's pending action. They contend that the class would later be entitled to sue GSWC for damages if GSWC's challenge is denied.  Without deciding whether such a lawsuit would be permitted, the Court granted the motion for class certification.  On March 13, 2014, the Court denied GSWC's petition. On April 9, 2014, GSWC filed a Notice of Appeal. GSWC is unable to predict the outcome of the appeal at this time. GSWC serves approximately 3,000 customers in Ojai.
	Environmental Clean-Up and Remediation:
	GSWC has been involved in environmental remediation and clean-up at a plant site ("Chadron Plant") that contained an underground storage tank which was used to store gasoline for its vehicles. This tank was removed from the ground in July 1990 along with the dispenser and ancillary piping. Since then, GSWC has been involved in various remediation activities at this site.  Recent analysis indicates that offsite monitoring wells may also be necessary to document effectiveness of remediation.
	As of June 30, 2014, the total spent to clean-up and remediate GSWC’s plant facility was approximately $4.1 million, of which $1.5 million has been paid by the State of California Underground Storage Tank Fund. Amounts paid by GSWC have been included in rate base and approved by the CPUC for recovery. As of June 30, 2014, GSWC has a regulatory asset and an accrued liability for the estimated additional cost of $1.4 million to complete the clean-up at the site. The estimate includes costs for two years of continuation of current activities of groundwater cleanup and monitoring, future soil treatment and site closure related activities. The ultimate cost may vary as there are many unknowns in remediation of underground gasoline spills and this is an estimate based on currently available information. Management also believes it is probable that the estimated additional costs will be approved in rate base by the CPUC.
	Other Litigation:
	Registrant is also subject to other ordinary routine litigation incidental to its business. Management believes that rate recovery, proper insurance coverage and reserves are in place to insure against property, general liability and workers’ compensation claims incurred in the ordinary course of business. Registrant is unable to predict an estimate of the loss, if any, resulting from any pending suits or administrative proceedings.

Business_Segments

Business Segments:	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Business Segments	'
	Business Segments:
	AWR has three reportable segments, water, electric and contracted services, whereas GSWC has two segments, water and electric. AWR has no material assets other than cash and its investments in its subsidiaries on a stand-alone basis.  All activities of GSWC are geographically located within California.
	Activities of ASUS and its subsidiaries are conducted in California, Georgia, Maryland, New Mexico, North Carolina, South Carolina, Texas and Virginia.  Each of ASUS’s wholly-owned subsidiaries is regulated by the state in which the subsidiary primarily conducts water and/or wastewater operations.  Fees charged for operations and maintenance and renewal and replacement services are based upon the terms of the contracts with the U.S. government which have been filed with the regulatory commissions in the states in which ASUS’ subsidiaries are incorporated.
	The tables below set forth information relating to GSWC’s operating segments, ASUS and its subsidiaries and other matters. Total assets by segment are not presented below, as certain of Registrant’s assets are not tracked by segment.  The utility plant amounts are net of respective accumulated provisions for depreciation. Capital additions reflect capital expenditures paid in cash and exclude property installed by developers and conveyed to GSWC.
		As Of And For The Three Months Ended June 30, 2014
		GSWC				ASUS		AWR			Consolidated
	(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
	Operating revenues	$	86,232	$	8,328	$	21,081	$	—		$	115,641
	Operating income	27,182		1,393		2,425		—			31,000
	Interest expense, net	5,271		337		55		(8		)	5,655
	Utility plant	943,382		40,304		4,982		—			988,668
	Depreciation and amortization expense (1)	9,634		598		293		—			10,525
	Income tax expense (benefit)	9,374		409		923		(444		)	10,262
	Capital additions	14,327		208		554		—			15,089
		As Of And For The Three Months Ended June 30, 2013
		GSWC				ASUS		AWR			Consolidated
	(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
	Operating revenues	$	84,069	$	8,397	$	28,229	$	—		$	120,695
	Operating income (loss)	26,772		2,186		4,343		(7		)	33,294
	Interest expense, net	5,208		378		93		(51		)	5,628
	Utility plant	901,505		40,993		4,242		—			946,740
	Depreciation and amortization expense (1)	8,909		575		284		—			9,768
	Income tax expense (benefit)	8,821		822		1,628		(123		)	11,148
	Capital additions	22,263		647		—		—			22,910
		As Of And For The Six Months Ended June 30, 2014
		GSWC				ASUS		AWR			Consolidated
	(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
	Operating revenues	$	156,989	$	18,784	$	41,813	$	—		$	217,586
	Operating income (loss)	45,577		3,428		4,809		(46		)	53,768
	Interest expense, net	10,439		671		122		(62		)	11,170
	Utility plant	943,382		40,304		4,982		—			988,668
	Depreciation and amortization expense (1)	19,197		1,275		583		—			21,055
	Income tax expense (benefit)	14,332		1,156		1,746		(615		)	16,619
	Capital additions	33,651		680		1,289		—			35,620
		As Of And For The Six Months Ended June 30, 2013
		GSWC				ASUS		AWR			Consolidated
	(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
	Operating revenues	$	153,302	$	19,131	$	58,814	$	—		$	231,247
	Operating income (loss)	48,535		4,019		8,710		(7		)	61,257
	Interest expense, net	10,402		754		153		(90		)	11,219
	Utility plant	901,505		40,993		4,242		—			946,740
	Depreciation and amortization expense (1)	17,839		1,167		578		—			19,584
	Income tax expense (benefit)	15,762		1,544		3,294		(203		)	20,397
	Capital additions	40,141		880		168					41,189
	(1)         Depreciation expense computed on GSWC’s transportation equipment of $225,000 and $218,000 for the three months ended June 30, 2014 and 2013, respectively, and $497,000 and $468,000 for the six months ended June 30, 2014 and 2013, respectively, is recorded in administrative and general expenses.
	The following table reconciles total utility plant (a key figure for rate-making) to total consolidated assets (in thousands):
		June 30,
		2014		2013
	Total utility plant	$	988,668	$	946,740
	Other assets	338,424		366,246
	Total consolidated assets	$	1,327,092	$	1,312,986

Summary_of_Significant_Account1

Summary of Significant Accounting Policies: (Policies)	6 Months Ended
	Jun. 30, 2014
Accounting Policies [Abstract]	'
Nature of Operations and Basis of Presentation	'
	Nature of Operations: American States Water Company (“AWR”) is the parent company of Golden State Water Company (“GSWC”) and American States Utility Services, Inc. (“ASUS”) (and its subsidiaries, Fort Bliss Water Services Company (“FBWS”), Terrapin Utility Services, Inc. (“TUS”), Old Dominion Utility Services, Inc. (“ODUS”), Palmetto State Utility Services, Inc. (“PSUS”) and Old North Utility Services, Inc. (“ONUS”)).  The subsidiaries of ASUS may be collectively referred to herein as the “Military Utility Privatization Subsidiaries.”
	GSWC is a public utility engaged principally in the purchase, production, distribution and sale of water in California serving approximately 257,000 customers. GSWC also distributes electricity in several San Bernardino County mountain communities in California serving approximately 24,000 customers through its Bear Valley Electric Service (“BVES”) division. Although Registrant has a diversified base of residential, industrial and other customers, revenues derived from commercial and residential water customers accounted for approximately 90% of total water revenues during the three and six months ended June 30, 2014 and 2013. The California Public Utilities Commission (“CPUC”) regulates GSWC’s water and electric businesses, in matters including properties, rates, services, facilities and other matters, and transactions by GSWC with its affiliates.  AWR’s assets and operating income are primarily those of GSWC.
	ASUS, through its wholly-owned subsidiaries, operates, maintains and performs construction activities (including renewal and replacement capital work) on water and/or wastewater systems at various United States military bases pursuant to 50-year firm fixed-price contracts. These contracts are subject to periodic price redeterminations and modifications for changes in circumstances and changes in laws and regulations.
	There is no direct regulatory oversight by the CPUC over AWR or the operation, rates or services provided by ASUS or any of its wholly owned subsidiaries.
	Basis of Presentation: The consolidated financial statements and notes thereto are being presented in a combined report being filed by two separate Registrants: AWR and GSWC. References in this report to “Registrant” are to AWR and GSWC, collectively, unless otherwise specified.
	The consolidated financial statements of AWR include the accounts of AWR and its subsidiaries, all of which are wholly owned. These financial statements are prepared in conformity with accounting principles generally accepted in the United States of America. Inter-company transactions and balances have been eliminated in the AWR consolidated financial statements.
	On May 20, 2013, AWR's Board of Directors approved a two-for-one stock split of the Company's common shares.  In September 2013, shareholders of record received one additional share for each AWR common share they owned.  This two-for-one stock split has been retroactively applied to these financial statements, resulting in an increase in the number of shares outstanding for all periods presented.
	The consolidated financial statements included herein have been prepared by Registrant, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”).  The December 31, 2013 condensed consolidated balance sheet data was derived from audited financial statements, but does not include all disclosures required by generally accepted accounting principles ("GAAP"). The preparation of the consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. In the opinion of management, all adjustments consisting of normal, recurring items and estimates necessary for a fair statement of the results for the interim periods have been made. It is suggested that these consolidated financial statements be read in conjunction with the consolidated financial statements and the notes thereto included in the Form 10-K for the year ended December 31, 2013 filed with the SEC.
GSWC's Related Party Transactions	'
	GSWC's Related Party Transactions: In May 2013, AWR issued an interest bearing promissory note (the "Note") to GSWC for $20.0 million which expires on May 23, 2018. Under the terms of the Note, AWR may borrow from GSWC amounts up to $20.0 million for working capital purposes. AWR agrees to pay any unpaid principal amounts outstanding under the Note, plus accrued interest. As of June 30, 2014, AWR had no amounts outstanding to GSWC under this Note.
	GSWC and ASUS provide and receive various services to and from their parent, AWR, and among themselves. In addition, AWR has a $100.0 million syndicated credit facility. AWR borrows under this facility and provides funds to its subsidiaries, including GSWC, in support of their operations.  The interest rate charged to GSWC and ASUS is sufficient to cover AWR’s interest cost under the credit facility. GSWC also allocates certain corporate office administrative and general costs to its affiliate, ASUS, using allocation factors approved by the CPUC.  Amounts owed to GSWC by its parent, AWR, or for allocated expenses are included in inter-company receivables as of June 30, 2014 and December 31, 2013.
Sales and Use Taxes	'
	Sales and Use Taxes:  GSWC bills certain sales and use taxes levied by state or local governments to its customers. Included in these sales and use taxes are franchise fees, which GSWC pays to various municipalities (based on ordinances adopted by these municipalities) in order to use public right of way for utility purposes. GSWC bills these franchise fees to its customers based on a CPUC-authorized rate. These franchise fees, which are required to be paid regardless of GSWC’s ability to collect from the customer, are accounted for on a gross basis. GSWC’s franchise fees billed to customers and recorded as operating revenue were approximately $975,000 and $947,000 for the three months ended June 30, 2014 and 2013, respectively, and $1.8 million million for the six months ended June 30, 2014 and 2013. When GSWC acts as an agent, and the tax is not required to be remitted if it is not collected from the customer, the taxes are accounted for on a net basis.
	Depending on the state in which the operations are conducted, ASUS and its subsidiaries are also subject to certain state non-income tax assessments generally computed on a “gross receipts” or “gross revenues” basis.  These non-income tax assessments are required to be paid regardless of whether the subsidiary is reimbursed by the U.S. government for these assessments under its 50-year contracts with the U.S. government.
Recently Adopted Accounting Pronouncements	'
	In May 2014, the Financial Accounting Standards Board issued updated accounting guidance on revenue recognition. The updated guidance includes specific steps required to recognize revenue on contracts with customers. For Registrant, the updated guidance is effective for reporting periods beginning after December 15, 2016. Registrant is currently evaluating the impact of this guidance, but does not expect it to have a material impact on its consolidated financial statements.
	In June 2014, the Financial Accounting Standards Board issued updated accounting guidance on share-based compensation.  The update includes explicit guidance on how to account for share-based payment awards whereby a performance target could be achieved after an employee completes the requisite service period.  For Registrant, the updated guidance is effective for reporting periods beginning after December 15, 2015.  Registrant is currently evaluating the impact of this guidance, but does not expect it to have a material impact on its consolidated financial statements.

Regulatory_Matters_Tables

Regulatory Matters: (Tables)	6 Months Ended
	Jun. 30, 2014
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,			December 31,
		2014			2013
	GSWC
	Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account	$	17,543		$	16,345
	Base Revenue Requirement Adjustment Mechanism	9,966			8,725
	Costs deferred for future recovery on Aerojet case	14,302			14,763
	Pensions and other post-retirement obligations (Note 6)	18,568			20,241
	Flow-through taxes, net (Note 5)	16,201			16,189
	Low income rate assistance balancing accounts	9,747			9,979
	General rate case memorandum accounts	9,868			15,645
	Other regulatory assets	20,066			25,086
	Various refunds to customers	(2,956		)	(4,292		)
	Total	$	113,305		$	122,681

Earnings_per_ShareCapital_Stoc1

Earnings per Share/Capital Stock: (Tables)	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Schedule of reconciliation of Registrant's net income and weighted average Common Shares outstanding for calculating basic net income per share	'
	The following is a reconciliation of Registrant’s net income and weighted average Common Shares outstanding used for calculating basic net income per share:
	Basic:	For The Three Months Ended June 30,				For The Six Months Ended
						June 30,
	(in thousands, except per share amounts)	2014		2013		2014		2013
	Net income	$	15,354	$	16,602	$	26,375	$	30,067
	Less: (a) Distributed earnings to common shareholders	7,853		6,854		15,699		13,693
	Distributed earnings to participating securities	47		95		87		181
	Undistributed earnings	7,454		9,653		10,589		16,193
	(b) Undistributed earnings allocated to common shareholders	7,411		9,522		10,530		15,982
	Undistributed earnings allocated to participating securities	43		131		59		211
	Total income available to common shareholders, basic (a)+(b)	$	15,264	$	16,376	$	26,229	$	29,675
	Weighted average Common Shares outstanding, basic	38,781		38,612		38,764		38,570
	Basic earnings per Common Share	$	0.39	$	0.43	$	0.68	$	0.77
Schedule of reconciliation of Registrant's net income and weighted average Common Shares outstanding for calculating diluted net income per share	'
	The following is a reconciliation of Registrant’s net income and weighted average Common Shares outstanding for calculating diluted net income per share:
	Diluted:	For The Three Months Ended June 30,				For The Six Months Ended
						June 30,
	(in thousands, except per share amounts)	2014		2013		2014		2013
	Common shareholders earnings, basic	$	15,264	$	16,376	$	26,229	$	29,675
	Undistributed earnings for dilutive stock options	43		—		59		—
	Total common shareholders earnings, diluted	$	15,307	$	16,376	$	26,288	$	29,675
	Weighted average common shares outstanding, basic	38,781		38,612		38,764		38,570
	Stock-based compensation (1)	220		80		210		78
	Weighted average common shares outstanding, diluted	39,001		38,692		38,974		38,648
	Diluted earnings per Common Share	$	0.39	$	0.43	$	0.67	$	0.77
	(1)       In applying the treasury stock method of reflecting the dilutive effect of outstanding stock-based compensation in the calculation of diluted EPS, 245,784 and 281,668 stock options at June 30, 2014 and 2013, respectively, were deemed to be outstanding in accordance with accounting guidance on earnings per share.  All of the 239,226 and 260,906 restricted stock units at June 30, 2014 and 2013, respectively, were included in the calculation of diluted EPS for the six months ended June 30, 2014 and 2013.

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments: (Tables) (GSWC)	6 Months Ended
	Jun. 30, 2014
GSWC	'
Fair value of financial instruments	'
Schedule of estimates of the fair value of long-term debt	'
	The table below estimates the fair value of long-term debt held by GSWC. The fair values as of June 30, 2014 and December 31, 2013 have been determined using rates for similar financial instruments of the same duration utilizing level 2 methods and assumptions. The interest rates used for the June 30, 2014 valuation increased as compared to December 31, 2013, decreasing the fair value of long-term debt as of June 30, 2014. Changes in the assumptions will produce differing results.
		30-Jun-14				31-Dec-13
	(dollars in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	Financial liabilities:
	Long-term debt—GSWC	$	332,203	$	421,028	$	332,377	$	412,590

Employee_Benefit_Plans_Tables

Employee Benefit Plans: (Tables)	6 Months Ended
	Jun. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Schedule of components of net periodic benefit costs, before allocation to the overhead pool, for Registrant's pension plan, postretirement plan, and SERP	'
	The components of net periodic benefit costs, before allocation to the overhead pool, for Registrant’s pension plan, postretirement plan and Supplemental Executive Retirement Plan ("SERP") for the three and six months ended June 30, 2014 and 2013 are as follows:
		For The Three Months Ended June 30,
		Pension Benefits						Other						SERP
								Postretirement
								Benefits
	(dollars in thousands)	2014			2013			2014			2013			2014		2013
	Components of Net Periodic Benefits Cost:
	Service cost	$	1,335		$	1,620		$	99		$	106		$	192	$	201
	Interest cost	1,845			1,723			130			113			154		129
	Expected return on plan assets	(2,235		)	(1,895		)	(113		)	(95		)	—		—
	Amortization of transition	—			—			104			105			—		—
	Amortization of prior service cost (benefit)	29			30			(50		)	(50		)	40		40
	Amortization of actuarial (gain) loss	(7		)	729			(66		)	—			35		85
	Net periodic pension cost under accounting standards	967			2,207			104			179			421		455
	Regulatory adjustment — deferred	449			(409		)	—			—			—		—
	Total expense recognized, before allocation to overhead pool	$	1,416		$	1,798		$	104		$	179		$	421	$	455
		For The Six Months Ended June 30,
		Pension Benefits						Other						SERP
								Postretirement
								Benefits
	(dollars in thousands)	2014			2013			2014			2013			2014		2013
	Components of Net Periodic Benefits Cost:
	Service cost	$	2,822		$	3,484		$	198		$	212		$	384	$	402
	Interest cost	3,760			3,454			260			226			308		258
	Expected return on plan assets	(4,450		)	(3,788		)	(226		)	(190		)	—		—
	Amortization of transition	—			—			208			210			—		—
	Amortization of prior service cost (benefit)	59			60			(100		)	(100		)	80		80
	Amortization of actuarial (gain) loss	—			1,440			(132		)	—			70		170
	Net periodic pension cost under accounting standards	2,191			4,650			208			358			842		910
	Regulatory adjustment — deferred	749			(919		)	—			—			—		—
	Total expense recognized, before allocation to overhead pool	$	2,940		$	3,731		$	208		$	358		$	842	$	910

Business_Segments_Tables

Business Segments: (Tables)	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Schedule of reporting segments information	'
	The tables below set forth information relating to GSWC’s operating segments, ASUS and its subsidiaries and other matters. Total assets by segment are not presented below, as certain of Registrant’s assets are not tracked by segment.  The utility plant amounts are net of respective accumulated provisions for depreciation. Capital additions reflect capital expenditures paid in cash and exclude property installed by developers and conveyed to GSWC.
		As Of And For The Three Months Ended June 30, 2014
		GSWC				ASUS		AWR			Consolidated
	(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
	Operating revenues	$	86,232	$	8,328	$	21,081	$	—		$	115,641
	Operating income	27,182		1,393		2,425		—			31,000
	Interest expense, net	5,271		337		55		(8		)	5,655
	Utility plant	943,382		40,304		4,982		—			988,668
	Depreciation and amortization expense (1)	9,634		598		293		—			10,525
	Income tax expense (benefit)	9,374		409		923		(444		)	10,262
	Capital additions	14,327		208		554		—			15,089
		As Of And For The Three Months Ended June 30, 2013
		GSWC				ASUS		AWR			Consolidated
	(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
	Operating revenues	$	84,069	$	8,397	$	28,229	$	—		$	120,695
	Operating income (loss)	26,772		2,186		4,343		(7		)	33,294
	Interest expense, net	5,208		378		93		(51		)	5,628
	Utility plant	901,505		40,993		4,242		—			946,740
	Depreciation and amortization expense (1)	8,909		575		284		—			9,768
	Income tax expense (benefit)	8,821		822		1,628		(123		)	11,148
	Capital additions	22,263		647		—		—			22,910
		As Of And For The Six Months Ended June 30, 2014
		GSWC				ASUS		AWR			Consolidated
	(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
	Operating revenues	$	156,989	$	18,784	$	41,813	$	—		$	217,586
	Operating income (loss)	45,577		3,428		4,809		(46		)	53,768
	Interest expense, net	10,439		671		122		(62		)	11,170
	Utility plant	943,382		40,304		4,982		—			988,668
	Depreciation and amortization expense (1)	19,197		1,275		583		—			21,055
	Income tax expense (benefit)	14,332		1,156		1,746		(615		)	16,619
	Capital additions	33,651		680		1,289		—			35,620
		As Of And For The Six Months Ended June 30, 2013
		GSWC				ASUS		AWR			Consolidated
	(dollars in thousands)	Water		Electric		Contracts		Parent			AWR
	Operating revenues	$	153,302	$	19,131	$	58,814	$	—		$	231,247
	Operating income (loss)	48,535		4,019		8,710		(7		)	61,257
	Interest expense, net	10,402		754		153		(90		)	11,219
	Utility plant	901,505		40,993		4,242		—			946,740
	Depreciation and amortization expense (1)	17,839		1,167		578		—			19,584
	Income tax expense (benefit)	15,762		1,544		3,294		(203		)	20,397
	Capital additions	40,141		880		168					41,189
	(1)         Depreciation expense computed on GSWC’s transportation equipment of $225,000 and $218,000 for the three months ended June 30, 2014 and 2013, respectively, and $497,000 and $468,000 for the six months ended June 30, 2014 and 2013, respectively, is recorded in administrative and general expenses.
Schedule of reconciliation of total utility plant (a key figure for rate-making) to total consolidated assets	'
	The following table reconciles total utility plant (a key figure for rate-making) to total consolidated assets (in thousands):
		June 30,
		2014		2013
	Total utility plant	$	988,668	$	946,740
	Other assets	338,424		366,246
	Total consolidated assets	$	1,327,092	$	1,312,986

Summary_of_Significant_Account2

Summary of Significant Accounting Policies: (Details) (USD $)

0 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

6 Months Ended

12 Months Ended

20-May-13

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

31-May-13

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

Jun. 30, 2013

Jun. 30, 2014

23-May-13

Jun. 30, 2014

Jun. 30, 2014

Jun. 30, 2014

Jul. 15, 2015

registrant

AWR

AWR

GSWC

GSWC

GSWC

GSWC

GSWC

GSWC

ASUS

ASUS

ASUS

ASUS

ASUS

Fourth Amendment to Revolving Credit Agreement

6.87% Medium-Term Notes Series A

7.00% Medium-Term Notes Series A

Sales

Subsequent Event

Promissory Note

Syndicated Credit Facility

Purchase, production, distribution and sale of water

Electricity distribution

Contracts

AWR

GSWC

GSWC

GSWC

6.87% Medium-Term Notes Series A

customer

customer

Syndicated Credit Facility

Purchase, production, distribution and sale of water

GSWC

Nature of Operations:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of customers served

'

'

'

'

'

'

'

'

'

'

'

257,000

24,000

'

'

'

'

'

'

'

'

'

'

Percentage of total revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

90.00%

'

Period of fixed price contracts to operate and maintain the water and/or wastewater systems at various military bases

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'50 years

'

'

'

'

'

Term of contract with US Military Bases

'

'

'

'50 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis of Presentation:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of registrants filing combined report

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock split, conversion ratio

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Related Party Transactions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, face amount

'

'

'

'

'

$20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

$5,000,000

$10,000,000

'

'

Debt instrument, maximum borrowing capacity

'

'

'

'

'

20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity on line of credit

'

'

'

'

'

'

100,000,000

'

'

'

'

'

'

'

'

'

'

'

100,000,000

'

'

'

'

Long term debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Rate of interest

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6.87%

7.00%

'

'

Debt instrument, face amount

'

'

'

'

'

20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

10,000,000

'

'

Repurchase amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

Notes Payable to Banks:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity on line of credit

'

'

'

'

'

'

100,000,000

'

'

'

'

'

'

'

'

'

'

'

100,000,000

'

'

'

'

Maximum borrowing capacity on line of credit, potential election to increase

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,000,000

'

'

'

'

Sales and Use Taxes:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Franchise fees billed to customers and recorded as operating revenue

'

'

'

'

'

'

'

975,000

947,000

1,800,000

1,800,000

'

'

'

'

'

'

'

'

'

'

'

'

Period of fixed price contracts to operate and maintain the water and/or wastewater systems at various military bases

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'50 years

'

'

'

'

'

Non-income tax assessments accounted on a gross basis

'

$3,965,000

$3,748,000

$8,290,000

$7,896,000

'

'

$3,530,000

$3,375,000

$7,426,000

$7,091,000

'

'

$157,000

$169,000

$306,000

$331,000

'

'

'

'

'

'

Regulatory_Matters_Details

Regulatory Matters: (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Regulatory matters:	'	'
Regulatory asset not accruing carrying costs	$35,700,000	'
Pension and other post-retirement obligations	'	'
Regulatory matters:	'	'
Regulatory asset not accruing carrying costs	15,000,000	'
Flow-through taxes, net	'	'
Regulatory matters:	'	'
Regulatory asset not accruing carrying costs	16,200,000	'
GOLDEN STATE WATER COMPANY	'	'
Regulatory matters:	'	'
Regulatory assets	113,305,000	122,681,000
GOLDEN STATE WATER COMPANY | Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account	'	'
Regulatory matters:	'	'
Regulatory assets	17,543,000	16,345,000
GOLDEN STATE WATER COMPANY | Base Revenue Requirement Adjustment Mechanism	'	'
Regulatory matters:	'	'
Regulatory assets	10,000,000	8,725,000
GOLDEN STATE WATER COMPANY | Costs deferred for future recovery on Aerojet case	'	'
Regulatory matters:	'	'
Regulatory assets	14,302,000	14,763,000
GOLDEN STATE WATER COMPANY | Pension and other post-retirement obligations	'	'
Regulatory matters:	'	'
Regulatory assets	18,568,000	20,241,000
GOLDEN STATE WATER COMPANY | Flow-through taxes, net	'	'
Regulatory matters:	'	'
Regulatory assets	16,201,000	16,189,000
GOLDEN STATE WATER COMPANY | Low income rate assistance balancing accounts	'	'
Regulatory matters:	'	'
Regulatory assets	9,747,000	9,979,000
GOLDEN STATE WATER COMPANY | General rate case memorandum accounts	'	'
Regulatory matters:	'	'
Regulatory assets	9,868,000	15,645,000
GOLDEN STATE WATER COMPANY | Other regulatory assets	'	'
Regulatory matters:	'	'
Regulatory assets	20,066,000	25,086,000
Various refunds to customers | GOLDEN STATE WATER COMPANY	'	'
Regulatory matters:	'	'
Regulatory assets	($2,956,000)	($4,292,000)

Regulatory_Matters_Alternative

Regulatory Matters: Alternative-Revenue Programs (Details) (GSWC, USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Regulatory matters:	'	'	'	'	'
Under (over) collection	$113,305,000	'	$113,305,000	'	$122,681,000
WRAM, net of MCBA	'	'	'	'	'
Regulatory matters:	'	'	'	'	'
Commercial paper, term	'	'	'90 days	'	'
Amount billed to customers as surcharges	4,500,000	7,100,000	6,400,000	10,600,000	'
Under (over) collection	17,543,000	'	17,543,000	'	16,345,000
WRAM, net of MCBA | Minimum	'	'	'	'	'
Regulatory matters:	'	'	'	'	'
Regulatory asset recovery periods	'	'	'18 months	'	'
WRAM, net of MCBA | Maximum	'	'	'	'	'
Regulatory matters:	'	'	'	'	'
Regulatory asset recovery periods	'	'	'24 months	'	'
WRAM	'	'	'	'	'
Regulatory matters:	'	'	'	'	'
Under (over) collection	15,800,000	'	15,800,000	'	'
Modified Cost Balancing Account	'	'	'	'	'
Regulatory matters:	'	'	'	'	'
Under (over) collection	1,700,000	'	1,700,000	'	'
Base revenue requirement adjustment mechanism	'	'	'	'	'
Regulatory matters:	'	'	'	'	'
Under (over) collection	$10,000,000	'	$10,000,000	'	$8,725,000

Regulatory_Matters_General_Rat

Regulatory Matters: General Rate Case Memorandum Accounts and Other Regulatory Assets (Details) (USD $)	3 Months Ended	6 Months Ended							3 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2013
	customer		GSWC	GSWC	GSWC	GSWC	GSWC	GSWC	Minimum	Maximum	Majority
					General rate case memorandum accounts	General rate case memorandum accounts	Other regulatory assets, net	Other regulatory assets, net	GSWC	GSWC	GSWC
									General rate case memorandum accounts	General rate case memorandum accounts	General rate case memorandum accounts
Regulatory matters:	'	'	'	'	'	'	'	'	'	'	'
Regulatory assets	'	'	$113,305,000	$122,681,000	$9,868,000	$15,645,000	$20,066,000	$25,086,000	'	'	'
Net regulatory assets increase (decrease) due to settlement of rate case	'	$5,800,000	'	'	'	'	'	'	'	'	'
Regulatory asset recovery periods	'	'	'	'	'	'	'	'	'12 months	'24 months	'12 months
Number of Customers in new service territory	17,000	'	'	'	'	'	'	'	'	'	'

Regulatory_Matters_CPUC_Rehear

Regulatory Matters: CPUC Rehearing Matter and Procurement Audits (Details) (USD $)	1 Months Ended	12 Months Ended		1 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2010	Jul. 31, 2011
	Audit			GSWC
				La Serena Plant Improvement Project
				CPUC Rehearing Matter
Regulatory matters:	'	'	'	'
Costs included in rehearing matter	'	'	'	$3,500,000
Disallowed costs and related refunds	'	$416,000	$2,200,000	'
Separate independent audits	3	'	'	'
Separate independent audits, period of years after settlement date	'10 years	'	'	'

Regulatory_Matters_BVES_Genera

Regulatory Matters: BVES General Rate Case and Renewables Portfolio Standard (Details) (GSWC, USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014
In Thousands, unless otherwise specified			BVES General Rate Case
Regulatory matters:	'	'	'
Net regulatory assets	$113,305	$122,681	'
Portion of deferred rate case costs required to be written off, if DRA prevails	'	'	50.00%
Percentage of deferred rate case cost to be borne by shareholders	'	'	50.00%

Earnings_per_ShareCapital_Stoc2

Earnings per Share/Capital Stock: (Details) (USD $)	3 Months Ended				6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Basic	'		'		'		'
Net income	$15,354		$16,602		$26,375		$30,067
Less: Distributed earnings to common shareholders	7,853		6,854		15,699		13,693
Less: Distributed earnings to participating securities	47		95		87		181
Undistributed earnings	7,454		9,653		10,589		16,193
Undistributed earnings allocated to common shareholders	7,411		9,522		10,530		15,982
Undistributed earnings allocated to participating securities	43		131		59		211
Total income available to common shareholders, basic	15,264		16,376		26,229		29,675
Weighted average Common Shares outstanding, basic (in shares)	38,781		38,612		38,764		38,570
Basic earnings per Common Share (in dollars per share)	$0.39		$0.43		$0.68		$0.77
Diluted	'		'		'		'
Total income available to common shareholders, basic	15,264		16,376		26,229		29,675
Undistributed earnings for dilutive stock options	43		0		59		0
Total common shareholders earnings, diluted	$15,307		$16,376		$26,288		$29,675
Weighted average Common Shares outstanding, basic (in shares)	38,781		38,612		38,764		38,570
Stock-based compensation (in shares)	220	[1]	80	[1]	210	[1]	78	[1]
Weighted average common shares outstanding, diluted (in shares)	39,001		38,692		38,974		38,648
Diluted earnings per Common Share (in dollars per share)	$0.39		$0.43		$0.67		$0.77
[1]	In applying the treasury stock method of reflecting the dilutive effect of outstanding stock-based compensation in the calculation of diluted EPS, 245,784 and 281,668 stock options at JuneB 30, 2014 and 2013, respectively, were deemed to be outstanding in accordance with accounting guidance on earnings per share. All of the 239,226 and 260,906 restricted stock units at JuneB 30, 2014 and 2013, respectively, were included in the calculation of diluted EPS for the six months ended JuneB 30, 2014 and 2013.

Earnings_per_ShareCapital_Stoc3

Earnings per Share/Capital Stock: (Details 2) (USD $)	0 Months Ended	3 Months Ended		6 Months Ended					3 Months Ended	0 Months Ended
In Thousands, except Share data, unless otherwise specified	20-May-14	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Mar. 27, 2014	Jun. 30, 2014	20-May-14	20-May-14
						Restricted Stock Units	Restricted Stock Units	AWR	AWR	Minimum	Maximum
										AWR	AWR
Additional disclosure	'	'	'	'	'	'	'	'	'	'	'
Options outstanding (in shares)	'	245,784	281,668	245,784	281,668	'	'	'	'	'	'
Restricted stock units outstanding (in shares)	'	'	'	'	'	239,226	260,906	'	'	'	'
Stock options included in the calculation of diluted EPS (in shares)	'	'	'	245,784	'	'	'	'	'	'	'
Stock options not included in the calculation of diluted EPS (in shares)	'	0	'	0	'	'	'	'	'	'	'
Anti-dilutive stock options not included in the computation of diluted EPS (in shares)	'	'	'	0	0	'	'	'	'	'	'
Common Shares issued under DRP and the 2000 and 2008 Employee Plans	'	'	'	70,573	208,986	'	'	'	'	'	'
Value of Common Shares issued under DRP and the 2000 and 2008 Employee Plans	'	'	'	$219	$1,832	'	'	'	'	'	'
Common Shares repurchased in the open market under DRP and 401(k) Plan	'	'	'	192,188	481,224	'	'	'	9,300	'	'
Dividends paid	'	$7,900	$6,800	$15,699	$13,684	'	'	'	'	'	'
Quarterly dividends paid, per share of common stock (in dollars per share)	'	$0.20	$0.18	$0.41	$0.36	'	'	'	'	'	'
Percent change in quarterly dividend	5.20%	'	'	'	'	'	'	'	'	'	'
Authorized shares to be repurchased	'	'	'	'	'	'	'	1,250,000	'	'	'
Dividends, Preferred Stock, Cash	'	'	'	'	'	'	'	'	'	$0.20	$0.21

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments: (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
GSWC | Carrying Amount	'	'
Financial liabilities:	'	'
Long-term debt-GSWC	$332,203,000	$332,377,000
GSWC | Total	'	'
Financial liabilities:	'	'
Long-term debt-GSWC	421,028,000	412,590,000
Mutual Funds | Level 1	'	'
Fair value of financial instruments	'	'
Investments	$7,200,000	'

Income_Taxes_Details

Income Taxes: (Details) (GSWC)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
GSWC	'	'	'	'
Effective income tax rate	'	'	'	'
ETRs (as a percent)	42.10%	41.10%	40.40%	41.40%

Employee_Benefit_Plans_Details

Employee Benefit Plans: (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Components of Net Periodic Benefits Cost:	'	'	'	'
Regulatory adjustment b deferred	'	'	$712,000	$994,000
GSWC	'	'	'	'
Components of Net Periodic Benefits Cost:	'	'	'	'
Regulatory adjustment b deferred	'	'	712,000	994,000
Pension Benefits	'	'	'	'
Components of Net Periodic Benefits Cost:	'	'	'	'
Service cost	1,335,000	1,620,000	2,822,000	3,484,000
Interest cost	1,845,000	1,723,000	3,760,000	3,454,000
Expected return on plan assets	-2,235,000	-1,895,000	-4,450,000	-3,788,000
Amortization of transition	0	0	0	0
Amortization of prior service cost (benefit)	29,000	30,000	59,000	60,000
Amortization of actuarial (gain) loss	-7,000	729,000	0	1,440,000
Net periodic pension cost under accounting standards	967,000	2,207,000	2,191,000	4,650,000
Regulatory adjustment b deferred	449,000	-409,000	749,000	-919,000
Total expense recognized, before allocation to overhead pool	1,416,000	1,798,000	2,940,000	3,731,000
Pension Benefits | GSWC	'	'	'	'
Pension Plan's funded status and amounts recognized in balance sheets and the components of net pension cost and accrued post-retirement liability	'	'	'	'
Defined Benefit Plan, Expected Contributions in Current Fiscal Year	'	'	8,200,000	'
Components of Net Periodic Benefits Cost:	'	'	'	'
Regulatory adjustment b deferred	'	'	3,600,000	'
Other Postretirement Benefits	'	'	'	'
Components of Net Periodic Benefits Cost:	'	'	'	'
Service cost	99,000	106,000	198,000	212,000
Interest cost	130,000	113,000	260,000	226,000
Expected return on plan assets	-113,000	-95,000	-226,000	-190,000
Amortization of transition	104,000	105,000	208,000	210,000
Amortization of prior service cost (benefit)	-50,000	-50,000	-100,000	-100,000
Amortization of actuarial (gain) loss	-66,000	0	-132,000	0
Net periodic pension cost under accounting standards	104,000	179,000	208,000	358,000
Regulatory adjustment b deferred	0	0	0	0
Total expense recognized, before allocation to overhead pool	104,000	179,000	208,000	358,000
SERP	'	'	'	'
Components of Net Periodic Benefits Cost:	'	'	'	'
Service cost	192,000	201,000	384,000	402,000
Interest cost	154,000	129,000	308,000	258,000
Expected return on plan assets	0	0	0	0
Amortization of transition	0	0	0	0
Amortization of prior service cost (benefit)	40,000	40,000	80,000	80,000
Amortization of actuarial (gain) loss	35,000	85,000	70,000	170,000
Net periodic pension cost under accounting standards	421,000	455,000	842,000	910,000
Regulatory adjustment b deferred	0	0	0	0
Total expense recognized, before allocation to overhead pool	$421,000	$455,000	$842,000	$910,000

Contingencies_Details

Contingencies: (Details) (GSWC, USD $)	6 Months Ended		1 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2014	Jul. 31, 2014
	Environmental Clean-Up and Remediation	Ojai FLOW	Subsequent Event
		Condemnation of Properties	City of Claremont
		customer	Condemnation of Properties
			customer
Contingencies	'	'	'
Condemnation	'	'	$135
Number of customers served through water systems	'	3,000	11,000
Amount spent in clean-up and remediation activities	4.1	'	'
Amount paid by the State of California Underground Storage Tank Fund for clean-up and remediation of plant facilities	1.5	'	'
Accrued liability for the estimated additional cost to complete the clean-up at the site	$1.40	'	'

Business_Segments_Details

Business Segments: (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013		Dec. 31, 2013
Details of reportable segment	'	'	'	'		'
Operating revenues	$115,641	$120,695	$217,586	$231,247		'
Operating income (loss)	31,000	33,294	53,768	61,257		'
Interest expense, net	5,655	5,628	11,170	11,219		'
Utility plant	988,668	946,740	988,668	946,740		981,477
Depreciation and amortization expense	10,525	9,768	21,055	19,584	[1]	'
Income tax expense (benefit)	10,262	11,148	16,619	20,397		'
Capital additions	15,089	22,910	35,620	41,189		'
GSWC	'	'	'	'		'
Details of reportable segment	'	'	'	'		'
Number of reportable segments	'	'	2	'		'
Operating revenues	94,560	92,466	175,773	172,433		'
Operating income (loss)	28,575	28,958	49,005	52,554		'
Utility plant	983,686	'	983,686	'		977,294
Depreciation and amortization expense	10,232	9,484	20,472	19,006		'
Income tax expense (benefit)	9,783	9,643	15,488	17,306		'
Depreciation on transportation equipment	225	218	497	468		'
AWR	'	'	'	'		'
Details of reportable segment	'	'	'	'		'
Number of reportable segments	'	'	3	'		'
Reportable Entities | GSWC | Water	'	'	'	'		'
Details of reportable segment	'	'	'	'		'
Operating revenues	86,232	84,069	156,989	153,302		'
Operating income (loss)	27,182	26,772	45,577	48,535		'
Interest expense, net	5,271	5,208	10,439	10,402		'
Utility plant	943,382	901,505	943,382	901,505		'
Depreciation and amortization expense	9,634	8,909	19,197	17,839	[1]	'
Income tax expense (benefit)	9,374	8,821	14,332	15,762		'
Capital additions	14,327	22,263	33,651	40,141		'
Reportable Entities | GSWC | Electric	'	'	'	'		'
Details of reportable segment	'	'	'	'		'
Operating revenues	8,328	8,397	18,784	19,131		'
Operating income (loss)	1,393	2,186	3,428	4,019		'
Interest expense, net	337	378	671	754		'
Utility plant	40,304	40,993	40,304	40,993		'
Depreciation and amortization expense	598	575	1,275	1,167	[1]	'
Income tax expense (benefit)	409	822	1,156	1,544		'
Capital additions	208	647	680	880		'
Reportable Entities | ASUS | Contracts	'	'	'	'		'
Details of reportable segment	'	'	'	'		'
Operating revenues	21,081	28,229	41,813	58,814		'
Operating income (loss)	2,425	4,343	4,809	8,710		'
Interest expense, net	55	93	122	153		'
Utility plant	4,982	4,242	4,982	4,242		'
Depreciation and amortization expense	293	284	583	578	[1]	'
Income tax expense (benefit)	923	1,628	1,746	3,294		'
Capital additions	554	0	1,289	168		'
Intersegment Eliminations | AWR	'	'	'	'		'
Details of reportable segment	'	'	'	'		'
Operating revenues	0	0	0	0		'
Operating income (loss)	0	-7	-46	-7		'
Interest expense, net	-8	-51	-62	-90		'
Utility plant	0	0	0	0		'
Depreciation and amortization expense	0	0	0	0	[1]	'
Income tax expense (benefit)	-444	-123	-615	-203		'
Capital additions	$0	$0	$0	'		'
[1]	Depreciation expense computed on GSWCbs transportation equipment of $225,000 and $218,000 for the three months ended JuneB 30, 2014 and 2013, respectively, and $497,000 and $468,000 for the six months ended JuneB 30, 2014 and 2013, respectively, is recorded in administrative and general expenses.

Business_Segments_Details_2

Business Segments: (Details 2) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Details of reportable segment	'	'	'
Total utility plant	$988,668	$981,477	$946,740
Other assets	338,424	'	366,246
Total Assets	1,327,092	1,310,183	1,312,986
GOLDEN STATE WATER COMPANY	'	'	'
Details of reportable segment	'	'	'
Total utility plant	983,686	977,294	'
Total Assets	$1,229,447	$1,233,381	'