$CWT
CALIFORNIA WATER SERVICE GROUP Stock $cwt

$cwt Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-K Financial Statement

#000104746913001968 Filed on February 28, 2013

Income Statement

Concept	2011 Q4	2011 Q3	2011 Q2
Revenue	$103.0M	$169.3M	$131.4M
YoY Change	-2.37%	15.72%	11.07%
Cost Of Revenue	$43.50M	$61.60M	$44.70M
YoY Change	16.94%	12.82%	6.94%
Gross Profit	$59.50M	$107.7M	$86.70M
YoY Change	-12.88%	17.45%	13.33%
Gross Profit Margin	57.77%	63.61%	65.98%
Selling, General & Admin	$23.10M	$21.60M	$20.60M
YoY Change	6.94%	21.35%	11.35%
% of Gross Profit	38.82%	20.06%	23.76%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$13.00M	$13.20M	$12.80M
YoY Change	21.5%	12.82%	11.3%
% of Gross Profit	21.85%	12.26%	14.76%
Operating Expenses	$52.20M	$61.70M	$58.50M
YoY Change	-4.4%	16.2%	10.17%
Operating Profit	$7.586M	$30.08M	$19.56M
YoY Change	-44.63%	-22.08%	-16.43%
Interest Expense	-$7.100M	-$7.300M	-$7.500M
YoY Change	-14.46%	12.31%	27.12%
% of Operating Profit	-93.59%	-24.27%	-38.35%
Other Income/Expense, Net	$2.300M	-$1.810M	$300.0K
YoY Change	4.55%	-281.0%
Pretax Income	$2.500M	$35.60M	$20.90M
YoY Change	-66.67%	7.23%	19.43%
Income Tax	$700.0K	$15.88M	$8.800M
% Of Pretax Income	28.0%	44.61%	42.11%
Net Earnings	$1.868M	$20.94M	$12.19M
YoY Change	-61.88%	2.62%	17.21%
Net Earnings / Revenue	1.81%	12.37%	9.28%
Basic Earnings Per Share		$0.50
Diluted Earnings Per Share	$0.04	$0.50	$0.29
COMMON SHARES
Basic Shares Outstanding		41.78M shares
Diluted Shares Outstanding		41.79M shares

Balance Sheet

Concept	2011 Q4	2011 Q3	2011 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$27.20M	$46.70M	$32.90M
YoY Change	-35.7%	381.44%	487.5%
Cash & Equivalents	$27.20M	$46.71M	$32.90M
Short-Term Investments
Other Short-Term Assets	$15.10M	$33.80M	$34.60M
YoY Change	-61.19%	18.6%	25.36%
Inventory	$5.900M	$5.800M	$6.100M
Prepaid Expenses
Receivables	$28.42M	$38.70M	$30.60M
Other Receivables	$15.60M	$30.20M	$27.40M
Total Short-Term Assets	$113.9M	$155.2M	$131.6M
YoY Change	-9.76%	69.25%	43.67%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.381B	$1.347B	$1.328B
YoY Change	6.71%	5.23%	5.91%
Goodwill	$2.615M
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$31.00M	$295.9M	$283.3M
YoY Change	-88.47%	15.05%	12.11%
Total Long-Term Assets	$1.741B	$1.646B	$1.614B
YoY Change	11.16%	6.87%	6.95%
TOTAL ASSETS
Total Short-Term Assets	$113.9M	$155.2M	$131.6M
Total Long-Term Assets	$1.741B	$1.646B	$1.614B
Total Assets	$1.855B	$1.801B	$1.745B
YoY Change	9.6%	10.37%	9.05%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$48.92M	$58.60M	$51.60M
YoY Change	23.86%	22.59%	5.74%
Accrued Expenses	$46.60M	$58.40M	$42.50M
YoY Change	20.41%	20.41%	12.14%
Deferred Revenue
YoY Change
Short-Term Debt	$47.14M	$39.90M	$32.80M
YoY Change	98.07%	-29.13%	-40.58%
Long-Term Debt Due	$6.533M	$2.400M	$2.400M
YoY Change	172.21%	0.0%	-17.24%
Total Short-Term Liabilities	$151.9M	$160.7M	$131.6M
YoY Change	41.54%	3.34%	-9.68%
LONG-TERM LIABILITIES
Long-Term Debt	$481.6M	$477.6M	$478.0M
YoY Change	0.51%	25.59%	25.79%
Other Long-Term Liabilities	$51.01M	$583.8M	$577.3M
YoY Change	-90.94%	5.04%	3.27%
Total Long-Term Liabilities	$532.6M	$1.061B	$1.055B
YoY Change	-48.89%	13.39%	12.39%
TOTAL LIABILITIES
Total Short-Term Liabilities	$151.9M	$160.7M	$131.6M
Total Long-Term Liabilities	$532.6M	$1.061B	$1.055B
Total Liabilities	$684.5M	$1.347B	$1.307B
YoY Change	-45.52%	12.68%	10.83%
SHAREHOLDERS EQUITY
Retained Earnings	$229.8M
YoY Change
Common Stock	$220.0M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$449.8M	$454.1M	$438.2M
YoY Change
Total Liabilities & Shareholders Equity	$1.855B	$1.801B	$1.745B
YoY Change	9.6%	10.37%	9.05%

Cashflow Statement

Concept	2011 Q4	2011 Q3	2011 Q2
OPERATING ACTIVITIES
Net Income	$1.868M	$20.94M	$12.19M
YoY Change	-61.88%	2.62%	17.21%
Depreciation, Depletion And Amortization	$13.00M	$13.20M	$12.80M
YoY Change	21.5%	12.82%	11.3%
Cash From Operating Activities	$13.60M	$50.00M	$23.10M
YoY Change	-780.0%	12.11%	113.89%
INVESTING ACTIVITIES
Capital Expenditures	-$29.00M	-$37.20M	-$27.80M
YoY Change	17.89%	-4.12%	-19.19%
Acquisitions
YoY Change
Other Investing Activities	-$2.900M	$0.00	-$100.0K
YoY Change	-3000.0%	-100.0%	-50.0%
Cash From Investing Activities	-$32.00M	-$37.20M	-$28.00M
YoY Change	30.61%	3.62%	-18.84%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-1.100M	1.000M	-3.200M
YoY Change	-101.86%	-121.74%	-117.68%
NET CHANGE
Cash From Operating Activities	13.60M	50.00M	23.10M
Cash From Investing Activities	-32.00M	-37.20M	-28.00M
Cash From Financing Activities	-1.100M	1.000M	-3.200M
Net Change In Cash	-19.50M	13.80M	-8.100M
YoY Change	-160.0%	236.59%	44.64%
FREE CASH FLOW
Cash From Operating Activities	$13.60M	$50.00M	$23.10M
Capital Expenditures	-$29.00M	-$37.20M	-$27.80M
Free Cash Flow	$42.60M	$87.20M	$50.90M
YoY Change	88.5%	4.56%	12.61%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012	cwt	Reporting Segments Number ReportingSegmentsNumber	1	segment
CY2012Q4	us-gaap	Deferred Costs DeferredCosts	719000	USD
CY2012	cwt	Commercial Paper Maturity Period CommercialPaperMaturityPeriod	90
CY2012	cwt	Expected Collection Period For Operating Income Related To Wram And Mcba That Are Deferred ExpectedCollectionPeriodForOperatingIncomeRelatedToWRAMAndMCBAThatAreDeferred	24
CY2011Q4	us-gaap	Deferred Revenue DeferredRevenue	12864000	USD
CY2012Q4	us-gaap	Deferred Revenue DeferredRevenue	882000	USD
CY2011Q4	us-gaap	Deferred Costs DeferredCosts	10492000	USD
CY2011Q4	cwt	Deferred Income Loss DeferredIncomeLoss	2372000	USD
CY2012Q4	cwt	Deferred Income Loss DeferredIncomeLoss	163000	USD
CY2012Q4	cwt	Unearned Revenue Liability Included In Accrued Expenses And Other Liabilities UnearnedRevenueLiabilityIncludedInAccruedExpensesAndOtherLiabilities	1708000	USD
CY2011Q4	cwt	Unearned Revenue Liability Included In Accrued Expenses And Other Liabilities UnearnedRevenueLiabilityIncludedInAccruedExpensesAndOtherLiabilities	1871000	USD
CY2012	dei	Entity Registrant Name EntityRegistrantName	CALIFORNIA WATER SERVICE GROUP
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0001035201
CY2012	dei	Document Type DocumentType	10-K
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	41908218	shares
CY2012Q2	dei	Entity Public Float EntityPublicFloat	774000000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Land PublicUtilitiesPropertyPlantAndEquipmentLand	42023000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Land PublicUtilitiesPropertyPlantAndEquipmentLand	37703000	USD
CY2012Q4	cwt	Public Utilities Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipment	1903365000	USD
CY2011Q4	cwt	Public Utilities Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipment	1807569000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	132362000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	98623000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	18613000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	16486000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	2096363000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	1960381000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	639307000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	579262000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	1457056000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	1381119000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	38790000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	27203000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	29958000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	28418000	USD
CY2012Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	34020000	USD
CY2011Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	21680000	USD
CY2012Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	11943000	USD
CY2011Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	6422000	USD
CY2012Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	15394000	USD
CY2011Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	15068000	USD
CY2012Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	5874000	USD
CY2011Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	5913000	USD
CY2012Q4	cwt	Taxes Prepaid Expenses And Other Assets Current TaxesPrepaidExpensesAndOtherAssetsCurrent	10585000	USD
CY2011Q4	cwt	Taxes Prepaid Expenses And Other Assets Current TaxesPrepaidExpensesAndOtherAssetsCurrent	9184000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	146564000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	113888000	USD
CY2012Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	344419000	USD
CY2011Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	319898000	USD
CY2012Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	5591000	USD
CY2011Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	6071000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	2615000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	2615000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	39679000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	30996000	USD
CY2012Q4	cwt	Total Other Assets TotalOtherAssets	392304000	USD
CY2011Q4	cwt	Total Other Assets TotalOtherAssets	359580000	USD
CY2012Q4	us-gaap	Assets Assets	1995924000	USD
CY2011Q4	us-gaap	Assets Assets	1854587000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	419000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	418000	USD
CY2012Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	221013000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	219572000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	252280000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	229839000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	473712000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	449829000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	434467000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	481632000	USD
CY2012Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	908179000	USD
CY2011Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	931461000	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	46783000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	6533000	USD
CY2012Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	89475000	USD
CY2011Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	47140000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	47199000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	48923000	USD
CY2012Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	5018000	USD
CY2011Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	2655000	USD
CY2012Q4	cwt	Accrued Expenses And Other Liabilities AccruedExpensesAndOtherLiabilities	46508000	USD
CY2011Q4	cwt	Accrued Expenses And Other Liabilities AccruedExpensesAndOtherLiabilities	37926000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	243067000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	151875000	USD
CY2012Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	2180000	USD
CY2012Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	3379000	USD
CY2011Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	3942000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	4705000	USD
CY2011Q4	us-gaap	Interest Payable Current InterestPayableCurrent	4756000	USD
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	68000000	shares
CY2011Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	187278000	USD
CY2012Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	158574000	USD
CY2011Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	154191000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	56873000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1854587000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	714000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	669000	USD
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	51013000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1995924000	USD
CY2011Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	2254000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	158846000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	116368000	USD
CY2012Q4	cwt	Regulatory And Other Liabilities RegulatoryAndOtherLiabilities	92593000	USD
CY2011Q4	cwt	Regulatory And Other Liabilities RegulatoryAndOtherLiabilities	79050000	USD
CY2012Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	244901000	USD
CY2011Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	232110000	USD
CY2012Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	187584000	USD
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	68000000	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	41908000	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	41817000	shares
CY2012	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	559966000	USD
CY2011	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	501814000	USD
CY2010	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	460399000	USD
CY2012	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	161336000	USD
CY2011	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	142570000	USD
CY2010	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	125930000	USD
CY2012	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	31027000	USD
CY2011	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	30053000	USD
CY2010	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	29577000	USD
CY2012	us-gaap	Pump Taxes PumpTaxes	10336000	USD
CY2011	us-gaap	Pump Taxes PumpTaxes	9130000	USD
CY2010	us-gaap	Pump Taxes PumpTaxes	8600000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	93927000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	85758000	USD
CY2010	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	75276000	USD
CY2012	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	77104000	USD
CY2011	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	54696000	USD
CY2010	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	56518000	USD
CY2012	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	19142000	USD
CY2011	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	20698000	USD
CY2010	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	19685000	USD
CY2012	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	54668000	USD
CY2011	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	50385000	USD
CY2010	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	42828000	USD
CY2012	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	19227000	USD
CY2011	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	18332000	USD
CY2010	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	17103000	USD
CY2012	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	486123000	USD
CY2011	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	434647000	USD
CY2010	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	398586000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	73843000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	67167000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	61813000	USD
CY2012	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	16686000	USD
CY2011	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	16160000	USD
CY2010	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	15993000	USD
CY2012	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	11553000	USD
CY2011	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	15822000	USD
CY2010	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	12312000	USD
CY2012	us-gaap	Gain Loss On Disposition Of Property GainLossOnDispositionOfProperty	84000	USD
CY2011	us-gaap	Gain Loss On Disposition Of Property GainLossOnDispositionOfProperty	62000	USD
CY2010	us-gaap	Gain Loss On Disposition Of Property GainLossOnDispositionOfProperty	22000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3121000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	259000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2216000	USD
CY2012	us-gaap	Interest Expense Debt InterestExpenseDebt	31537000	USD
CY2011	us-gaap	Interest Expense Debt InterestExpenseDebt	32455000	USD
CY2010	us-gaap	Interest Expense Debt InterestExpenseDebt	27936000	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	3401000	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2741000	USD
CY2010	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1563000	USD
CY2012	us-gaap	Interest Costs Incurred InterestCostsIncurred	28136000	USD
CY2011	us-gaap	Interest Costs Incurred InterestCostsIncurred	29714000	USD
CY2010	us-gaap	Interest Costs Incurred InterestCostsIncurred	26373000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	48828000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	37712000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	37656000	USD
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41892000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41762000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41612000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41892000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41772000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41638000	shares
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.17
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.90
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.90
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.17
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.90
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.90
CY2009Q4	us-gaap	Stockholders Equity StockholdersEquity	420634000	USD
CY2010	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1989000	USD
CY2010	us-gaap	Dividends Common Stock DividendsCommonStock	24753000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	435526000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	2265000	USD
CY2011	us-gaap	Dividends Common Stock DividendsCommonStock	25674000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1442000	USD
CY2012	us-gaap	Dividends Common Stock DividendsCommonStock	26387000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	56866000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	51981000	USD
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	45265000	USD
CY2012	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1107000	USD
CY2011	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1082000	USD
CY2010	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	979000	USD
CY2012	cwt	Other Changes In Noncurrent Assets And Liabilities OtherChangesInNoncurrentAssetsAndLiabilities	-8490000	USD
CY2011	cwt	Other Changes In Noncurrent Assets And Liabilities OtherChangesInNoncurrentAssetsAndLiabilities	611000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	111272000	USD
CY2010	cwt	Other Changes In Noncurrent Assets And Liabilities OtherChangesInNoncurrentAssetsAndLiabilities	-1139000	USD
CY2012	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	2504000	USD
CY2011	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	-1876000	USD
CY2010	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	2641000	USD
CY2012	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	1392000	USD
CY2011	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	8213000	USD
CY2010	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	860000	USD
CY2012	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	326000	USD
CY2011	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	1143000	USD
CY2010	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	508000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	3322000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-11823000	USD
CY2010	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2842000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	879000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	4612000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	220000	USD
CY2012	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	6219000	USD
CY2011	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	8270000	USD
CY2010	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	-598000	USD
CY2012	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	83086000	USD
CY2011	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	73560000	USD
CY2010	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	37854000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	131914000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	75510000	USD
CY2012	us-gaap	Payments To Acquire Water And Waste Water Systems PaymentsToAcquireWaterAndWasteWaterSystems	127681000	USD
CY2011	us-gaap	Payments To Acquire Water And Waste Water Systems PaymentsToAcquireWaterAndWasteWaterSystems	118546000	USD
CY2010	us-gaap	Payments To Acquire Water And Waste Water Systems PaymentsToAcquireWaterAndWasteWaterSystems	123926000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	85000	USD
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	64000	USD
CY2010	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	34000	USD
CY2012	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	3294000	USD
CY2011	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	1744000	USD
CY2010	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	1891000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-1959000	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	3042000	USD
CY2010	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-3169000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-128931000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-123268000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-122614000	USD
CY2012	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	94335000	USD
CY2011	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	23390000	USD
CY2010	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	85750000	USD
CY2012	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	52000000	USD
CY2010	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	74000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	965000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	912000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	124000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	178000	USD
CY2010	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	106173000	USD
CY2012	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	6966000	USD
CY2011	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	7231000	USD
CY2010	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	5313000	USD
CY2012	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	7397000	USD
CY2011	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	6205000	USD
CY2010	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	6188000	USD
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	7037000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7047000	USD
CY2011	cwt	Mtbe Reclassification From Other Long Term Liabilities To Ciac MTBEReclassificationFromOtherLongTermLiabilitiesToCIAC	16735000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2963000	USD
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	13692000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	26387000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	25674000	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	24753000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	8604000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-3078000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	79515000	USD
CY2012	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	11587000	USD
CY2011	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-15074000	USD
CY2010	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	32411000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	27120000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	26998000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	24425000	USD
CY2011	us-gaap	Income Taxes Paid IncomeTaxesPaid	10535000	USD
CY2010	us-gaap	Income Taxes Paid IncomeTaxesPaid	9815000	USD
CY2012	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	-5349000	USD
CY2011	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	-11028000	USD
CY2012	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	11048000	USD
CY2011	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	9008000	USD
CY2010	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	6565000	USD
CY2012	cwt	Mtbe Reclassification From Other Long Term Liabilities To Ciac MTBEReclassificationFromOtherLongTermLiabilitiesToCIAC	4462000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	42277000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9866000	USD
CY2012Q4	cwt	Utility Plant Contribution By Developers UtilityPlantContributionByDevelopers	13630000	USD
CY2011Q4	cwt	Utility Plant Contribution By Developers UtilityPlantContributionByDevelopers	14991000	USD
CY2010Q4	cwt	Utility Plant Contribution By Developers UtilityPlantContributionByDevelopers	31422000	USD
CY2012	cwt	Completed Contract Method Maximum Contract Completion Period CompletedContractMethodMaximumContractCompletionPeriod	3
CY2012	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.031	pure
CY2011	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.030	pure
CY2010	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.028	pure
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	16105000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	14049000	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	2266000	USD
CY2011Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	4225000	USD
CY2012Q4	us-gaap	Regulatory Assets RegulatoryAssets	344419000	USD
CY2011Q4	us-gaap	Regulatory Assets RegulatoryAssets	319898000	USD
CY2012Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	35720000	USD
CY2011Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	28037000	USD
CY2012Q4	cwt	Customer Advances For Construction With Specified Refund Period CustomerAdvancesForConstructionWithSpecifiedRefundPeriod	186753000	USD
CY2011Q4	cwt	Customer Advances For Construction With Specified Refund Period CustomerAdvancesForConstructionWithSpecifiedRefundPeriod	185902000	USD
CY2012	cwt	Customer Advances For Construction Specified Refund Period CustomerAdvancesForConstructionSpecifiedRefundPeriod	40
CY2012Q4	cwt	Customer Advances For Construction Other CustomerAdvancesForConstructionOther	831000	USD
CY2011Q4	cwt	Customer Advances For Construction Other CustomerAdvancesForConstructionOther	1376000	USD
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	10000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	26000	shares
CY2012Q4	cwt	Customer Advances For Construction Refunds Due Year One CustomerAdvancesForConstructionRefundsDueYearOne	7179000	USD
CY2012Q4	cwt	Customer Advances For Construction Refunds Due Year Two CustomerAdvancesForConstructionRefundsDueYearTwo	7178000	USD
CY2012Q4	cwt	Customer Advances For Construction Refunds Due Year Three CustomerAdvancesForConstructionRefundsDueYearThree	7115000	USD
CY2012Q4	cwt	Customer Advances For Construction Refunds Due Year Four CustomerAdvancesForConstructionRefundsDueYearFour	7098000	USD
CY2012Q4	cwt	Customer Advances For Construction Refunds Due Year Five CustomerAdvancesForConstructionRefundsDueYearFive	7081000	USD
CY2012Q4	cwt	Customer Advances For Construction Refunds Due After Year Five CustomerAdvancesForConstructionRefundsDueAfterYearFive	151102000	USD
CY2012Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	1131	employee
CY2012Q4	cwt	Entity Number Of Non Supervisory Employees EntityNumberOfNonSupervisoryEmployees	734	employee
CY2012	us-gaap	Finite Lived Intangible Assets Weighted Average Useful Life FiniteLivedIntangibleAssetsWeightedAverageUsefulLife	13
CY2011Q2	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	400000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	14118000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	4650000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	9468000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	13257000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	3772000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	9485000	USD
CY2012Q4	us-gaap	Other Indefinite Lived Intangible Assets OtherIndefiniteLivedIntangibleAssets	4495000	USD
CY2011Q4	us-gaap	Other Indefinite Lived Intangible Assets OtherIndefiniteLivedIntangibleAssets	3229000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1298000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1421000	USD
CY2010	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1894000	USD
CY2012	us-gaap	Future Amortization Expense Year One FutureAmortizationExpenseYearOne	1319000	USD
CY2012	us-gaap	Future Amortization Expense Year Two FutureAmortizationExpenseYearTwo	1296000	USD
CY2012	us-gaap	Future Amortization Expense Year Three FutureAmortizationExpenseYearThree	1237000	USD
CY2012	us-gaap	Future Amortization Expense Year Four FutureAmortizationExpenseYearFour	1192000	USD
CY2012	us-gaap	Future Amortization Expense After Year Five FutureAmortizationExpenseAfterYearFive	4638000	USD
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	241000	shares
CY2011Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	41817218	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	41908218	shares
CY2012	us-gaap	Debt Instrument Description Of Variable Rate Basis DebtInstrumentDescriptionOfVariableRateBasis	LIBOR
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-9018000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	37196000	USD
CY2012	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	28178000	USD
CY2011	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	47140000	USD
CY2011	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	32324000	USD
CY2011Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0241	pure
CY2011Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0210	pure
CY2012	us-gaap	Line Of Credit Facility Maximum Amount Outstanding During Period LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod	89475000	USD
CY2012	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	71715000	USD
CY2012Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0174	pure
CY2012Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0214	pure
CY2011	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	9388000	USD
CY2012Q4	us-gaap	Long Term Debt LongTermDebt	481250000	USD
CY2011Q4	us-gaap	Long Term Debt LongTermDebt	488165000	USD
CY2012Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	16320000	USD
CY2011Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	14143000	USD
CY2012Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	6906000	USD
CY2011Q4	us-gaap	Workers Compensation Liability Current WorkersCompensationLiabilityCurrent	5222000	USD
CY2012Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	8282000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	8026000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-5246000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1480000	USD
CY2012	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	-6726000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-14264000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	35716000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	7413000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	12982000	USD
CY2011	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	20395000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2629000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	142000	USD
CY2011	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	2771000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	10042000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	13124000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4027000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	15730000	USD
CY2010	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	19757000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3020000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1779000	USD
CY2010	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	4799000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	17509000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	24600000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4041000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	74000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-85000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	21308000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	21774000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3500000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	74000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	46000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3577000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	74000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-721000	USD
CY2012Q4	cwt	Deferred Tax Assets Developer Deposits For Extension Agreements And Contributions In Aid Of Construction DeferredTaxAssetsDeveloperDepositsForExtensionAgreementsAndContributionsInAidOfConstruction	44530000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3607000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	56574000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	207642000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	19533000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3245000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	230420000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-173846000	USD
CY2011Q4	cwt	Deferred Tax Assets Developer Deposits For Extension Agreements And Contributions In Aid Of Construction DeferredTaxAssetsDeveloperDepositsForExtensionAgreementsAndContributionsInAidOfConstruction	45587000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3449000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	50051000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	155916000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	17393000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	3645000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	176954000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-126903000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	-15000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	-10535000	USD
CY2012	cwt	Defined Contribution Plan Maximum Participant Contribution As Percentage Of Compensation DefinedContributionPlanMaximumParticipantContributionAsPercentageOfCompensation	0.20	pure
CY2011	cwt	Defined Contribution Plan Employer Matching Contribution On Dollar For Participant Contributions DefinedContributionPlanEmployerMatchingContributionOnDollarForParticipantContributions	0.75	USD
CY2012	cwt	Defined Contribution Plan Employer Matching Contribution On Dollar For Participant Contributions DefinedContributionPlanEmployerMatchingContributionOnDollarForParticipantContributions	0.75	USD
CY2009	cwt	Defined Contribution Plan Employer Matching Contribution On Dollar For Participant Contributions DefinedContributionPlanEmployerMatchingContributionOnDollarForParticipantContributions	0.50	USD
CY2012	cwt	Defined Contribution Plan Maximum Employer Contribution As Percentage Of Compensation DefinedContributionPlanMaximumEmployerContributionAsPercentageOfCompensation	0.060	pure
CY2011	cwt	Defined Contribution Plan Maximum Employer Contribution As Percentage Of Compensation DefinedContributionPlanMaximumEmployerContributionAsPercentageOfCompensation	0.060	pure
CY2009	cwt	Defined Contribution Plan Maximum Employer Contribution As Percentage Of Compensation DefinedContributionPlanMaximumEmployerContributionAsPercentageOfCompensation	0.040	pure
CY2010	cwt	Defined Contribution Plan Employer Matching Contribution On Dollar For Participant Contributions DefinedContributionPlanEmployerMatchingContributionOnDollarForParticipantContributions	0.75	USD
CY2010	cwt	Defined Contribution Plan Maximum Employer Contribution As Percentage Of Compensation DefinedContributionPlanMaximumEmployerContributionAsPercentageOfCompensation	0.060	pure
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4029000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3499000	USD
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3232000	USD
CY2012	cwt	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Return On Assets Average Return For Last Five Years DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationExpectedLongTermReturnOnAssetsAverageReturnForLastFiveYears	0.0300	pure
CY2012	cwt	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Expected Long Term Return On Assets Average Return For Last Ten Years DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationExpectedLongTermReturnOnAssetsAverageReturnForLastTenYears	0.0710	pure
CY2012	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed For Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedForNextFiscalYear	0.082	pure
CY2012	cwt	Defined Benefit Plan Health Care Cost Trend Rate Assumed By Specified Period DefinedBenefitPlanHealthCareCostTrendRateAssumedBySpecifiedPeriod	0.062	pure
CY2012	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate DefinedBenefitPlanUltimateHealthCareCostTrendRate	0.054	pure
CY2012	cwt	Defined Benefit Plan Period In Which Rate Reaches Ultimate Trend Rate DefinedBenefitPlanPeriodInWhichRateReachesUltimateTrendRate	50
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	2036000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents	1506000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	18576000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation	14147000	USD
CY2012Q4	cwt	Share Based Compensation Arrangement By Share Based Payment Award Number Of Stock Based Compensation Plans ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfStockBasedCompensationPlans	2	plan
CY2012	cwt	Fair Value Inputs Risk Premium FairValueInputsRiskPremium	0.0119	pure
CY2011Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	488165000	USD
CY2012Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1575
CY2012Q3	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	178135000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	36361000	USD
CY2012Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1575
CY2012Q2	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	143552000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	19622000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	12965000	USD
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2011Q4	cwt	Liabilities Carrying Value LiabilitiesCarryingValue	675443000	USD
CY2012Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	481250000	USD
CY2012Q4	cwt	Liabilities Carrying Value LiabilitiesCarryingValue	668834000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	1109000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	1109000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	1109000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	1109000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	1109000	USD
CY2012Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	8609000	USD
CY2012Q1	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	116749000	USD
CY2012Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	6607000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	1085000	USD
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	29772000	USD
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.71
CY2012Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1575
CY2012Q4	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	121530000	USD
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	11253000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	5006000	USD
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2012Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1575
CY2011Q1	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	98149000	USD
CY2011Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	9948000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	2719000	USD
CY2011Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.07
CY2011Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.15375
CY2011Q2	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	131397000	USD
CY2011Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	19555000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	12190000	USD
CY2011Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2011Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.15375
CY2011Q3	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	169254000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	30078000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	20935000	USD
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.50
CY2011Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.15375
CY2011Q4	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	103014000	USD
CY2011Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	7586000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	1868000	USD
CY2011Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.04
CY2011Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.15375
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	16459000	USD
CY2012Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	47885000	USD
CY2012Q4	cwt	Accounts Payable Including Regulatory Liability Current AccountsPayableIncludingRegulatoryLiabilityCurrent	47199000	USD
CY2012Q4	cwt	Accrued Expenses And Other Liabilities Including Accrued Interest AccruedExpensesAndOtherLiabilitiesIncludingAccruedInterest	59610000	USD
CY2010	cwt	Increase Decrease In Other Operating Assets And Liabilities Net IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNet	4588000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21452000	USD
CY2012Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	91315000	USD
CY2011Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	71588000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	15097000	USD
CY2011Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	39682000	USD
CY2011Q4	cwt	Accounts Payable Including Regulatory Liability Current AccountsPayableIncludingRegulatoryLiabilityCurrent	51578000	USD
CY2011Q4	cwt	Accrued Expenses And Other Liabilities Including Accrued Interest AccruedExpensesAndOtherLiabilitiesIncludingAccruedInterest	46624000	USD
CY2012	cwt	Changes In Other Noncurrent Assets And Liabilities ChangesInOtherNoncurrentAssetsAndLiabilities	-7383000	USD
CY2012	cwt	Increase Decrease In Other Operating Assets And Liabilities Net IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNet	-2058000	USD
CY2011	cwt	Increase Decrease In Other Operating Assets And Liabilities Net IncreaseDecreaseInOtherOperatingAssetsAndLiabilitiesNet	-15349000	USD
CY2011	cwt	Changes In Other Noncurrent Assets And Liabilities ChangesInOtherNoncurrentAssetsAndLiabilities	1693000	USD
CY2010	cwt	Changes In Other Noncurrent Assets And Liabilities ChangesInOtherNoncurrentAssetsAndLiabilities	-160000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	831000	USD
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	831000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	-114000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	114000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	114000	USD
CY2012	cwt	Deferred Revenue Reversals DeferredRevenueReversals	12864000	USD
CY2012	cwt	Deferred Revenue Recognized DeferredRevenueRecognized	882000	USD
CY2012	cwt	Deferred Costs Reversals DeferredCostsReversals	10492000	USD
CY2012	cwt	Deferred Costs Recognized DeferredCostsRecognized	719000	USD
CY2012	cwt	Deferred Reversals Income Loss DeferredReversalsIncomeLoss	2372000	USD
CY2012	cwt	Deferred Operating Income Loss Recognized DeferredOperatingIncomeLossRecognized	163000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	8437000	USD
CY2012	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	19356000	USD
CY2011	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	23025000	USD
CY2010	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	23069000	USD
CY2012	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	2096000	USD
CY2011	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	141000	USD
CY2010	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	1487000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23166000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24556000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1015000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	831000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	-1614000	USD

Files In Submission

Name	View Source	Status
0001047469-13-001968-index-headers.html	Edgar Link	pending
0001047469-13-001968-index.html	Edgar Link	pending
0001047469-13-001968.txt	Edgar Link	pending
0001047469-13-001968-xbrl.zip	Edgar Link	pending
a2213055z10-k.htm	Edgar Link	pending
a2213055zex-12_1.htm	Edgar Link	pending
a2213055zex-21.htm	Edgar Link	pending
a2213055zex-23_1.htm	Edgar Link	pending
a2213055zex-31_1.htm	Edgar Link	pending
a2213055zex-31_2.htm	Edgar Link	pending
a2213055zex-32.htm	Edgar Link	pending
cwt-20121231.xml	Edgar Link	completed
cwt-20121231.xsd	Edgar Link	pending
cwt-20121231_cal.xml	Edgar Link	unprocessable
cwt-20121231_def.xml	Edgar Link	unprocessable
cwt-20121231_lab.xml	Edgar Link	unprocessable
cwt-20121231_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
g481708.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$CWT
CALIFORNIA WATER SERVICE GROUP Stock $cwt

2011 Q4 Form 10-K Financial Statement

#000104746913001968 Filed on February 28, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CWT CALIFORNIA WATER SERVICE GROUP Stock $cwt

2011 Q4 Form 10-K Financial Statement

#000104746913001968 Filed on February 28, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CWT
CALIFORNIA WATER SERVICE GROUP Stock $cwt