2018 Form 10-K Financial Statement
#000105690319000004 Filed on February 25, 2019
Income Statement
| Concept | 2018 | 2017 Q4 | 2017 Q3 |
|---|---|---|---|
| Revenue | $436.8M | $104.2M | $124.4M |
| YoY Change | -0.86% | -2.45% | 0.49% |
| Cost Of Revenue | $53.91M | $22.40M | $25.90M |
| YoY Change | 8.16% | 12.0% | 3.6% |
| Gross Profit | $382.9M | $81.80M | $98.50M |
| YoY Change | -2.01% | -5.76% | -0.3% |
| Gross Profit Margin | 87.66% | 78.52% | 79.17% |
| Selling, General & Admin | $82.60M | $19.10M | $21.80M |
| YoY Change | 1.23% | -3.05% | 10.1% |
| % of Gross Profit | 21.57% | 23.35% | 22.13% |
| Research & Development | |||
| YoY Change | |||
| % of Gross Profit | |||
| Depreciation & Amortization | $40.43M | $9.900M | $9.854M |
| YoY Change | 3.57% | -1.0% | 3.88% |
| % of Gross Profit | 10.56% | 12.1% | 10.0% |
| Operating Expenses | $335.8M | $59.80M | $85.88M |
| YoY Change | 7.12% | -8.28% | 2.01% |
| Operating Profit | $101.0M | $21.96M | $38.53M |
| YoY Change | -20.55% | -0.6% | -2.73% |
| Interest Expense | $23.43M | -$4.400M | $5.775M |
| YoY Change | 3.77% | -8.33% | 0.79% |
| % of Operating Profit | 23.2% | -20.04% | 14.99% |
| Other Income/Expense, Net | -$19.10M | $600.0K | -$5.020M |
| YoY Change | 1.82% | 0.0% | -4.74% |
| Pretax Income | $81.89M | $18.20M | $33.51M |
| YoY Change | -24.42% | 4.6% | -2.43% |
| Income Tax | $18.02M | $5.400M | $12.51M |
| % Of Pretax Income | 22.0% | 29.67% | 37.32% |
| Net Earnings | $63.87M | $12.87M | $21.01M |
| YoY Change | -7.92% | 14.77% | -2.93% |
| Net Earnings / Revenue | 14.62% | 12.35% | 16.88% |
| Basic Earnings Per Share | $1.73 | $0.35 | $0.57 |
| Diluted Earnings Per Share | $1.72 | $0.35 | $0.57 |
| COMMON SHARES | |||
| Basic Shares Outstanding | 36.73M shares | 36.68M shares | 36.66M shares |
| Diluted Shares Outstanding | 36.94M shares | 36.86M shares |
Balance Sheet
| Concept | 2018 | 2017 Q4 | 2017 Q3 |
|---|---|---|---|
| SHORT-TERM ASSETS | |||
| Cash & Short-Term Investments | $7.100M | $200.0K | $6.700M |
| YoY Change | 3450.0% | -50.0% | 139.29% |
| Cash & Equivalents | $7.100M | $214.0K | $6.661M |
| Short-Term Investments | |||
| Other Short-Term Assets | $46.20M | $66.20M | $58.40M |
| YoY Change | -30.21% | -7.28% | 2.1% |
| Inventory | $5.800M | $46.20M | $40.00M |
| Prepaid Expenses | |||
| Receivables | $70.20M | $26.13M | $29.39M |
| Other Receivables | $2.200M | $4.700M | $100.0K |
| Total Short-Term Assets | $131.5M | $155.5M | $146.7M |
| YoY Change | -15.43% | -6.84% | 7.17% |
| LONG-TERM ASSETS | |||
| Property, Plant & Equipment | $1.322B | $1.205B | $1.182B |
| YoY Change | 7.53% | 4.7% | 4.7% |
| Goodwill | $1.116M | $1.116M | |
| YoY Change | 0.0% | 0.0% | |
| Intangibles | |||
| YoY Change | |||
| Long-Term Investments | |||
| YoY Change | |||
| Other Assets | $5.300M | $5.667M | $8.504M |
| YoY Change | -82.96% | 11.82% | 25.56% |
| Total Long-Term Assets | $1.370B | $1.261B | $1.340B |
| YoY Change | 8.62% | -3.25% | 2.78% |
| TOTAL ASSETS | |||
| Total Short-Term Assets | $131.5M | $155.5M | $146.7M |
| Total Long-Term Assets | $1.370B | $1.261B | $1.340B |
| Total Assets | $1.501B | $1.417B | $1.486B |
| YoY Change | 5.98% | -3.66% | 3.2% |
| SHORT-TERM LIABILITIES | |||
| YoY Change | |||
| Accounts Payable | $59.50M | $50.98M | $53.80M |
| YoY Change | 16.67% | 16.59% | 11.56% |
| Accrued Expenses | $23.90M | $3.861M | $6.576M |
| YoY Change | 17.73% | -0.08% | -0.29% |
| Deferred Revenue | $3.911M | ||
| YoY Change | |||
| Short-Term Debt | $0.00 | $59.00M | $46.00M |
| YoY Change | -100.0% | -34.44% | -40.26% |
| Long-Term Debt Due | $40.30M | $324.0K | $333.0K |
| YoY Change | 13333.33% | -1.82% | 0.91% |
| Total Short-Term Liabilities | $146.6M | $156.7M | $151.9M |
| YoY Change | -6.45% | -11.96% | -15.56% |
| LONG-TERM LIABILITIES | |||
| Long-Term Debt | $376.6M | $321.0M | $320.9M |
| YoY Change | 17.32% | 0.02% | 0.02% |
| Other Long-Term Liabilities | $305.8M | $11.01M | $13.81M |
| YoY Change | 4.23% | -0.96% | 36.39% |
| Total Long-Term Liabilities | $682.4M | $409.1M | $334.8M |
| YoY Change | 11.07% | 23.18% | 1.13% |
| TOTAL LIABILITIES | |||
| Total Short-Term Liabilities | $146.6M | $156.7M | $151.9M |
| Total Long-Term Liabilities | $682.4M | $409.1M | $334.8M |
| Total Liabilities | $943.2M | $565.8M | $486.6M |
| YoY Change | 6.36% | 10.92% | -4.75% |
| SHAREHOLDERS EQUITY | |||
| Retained Earnings | $279.8M | $276.3M | |
| YoY Change | 13.26% | 12.92% | |
| Common Stock | $250.1M | $249.5M | |
| YoY Change | 1.17% | 1.38% | |
| Preferred Stock | |||
| YoY Change | |||
| Treasury Stock (at cost) | |||
| YoY Change | |||
| Treasury Stock Shares | |||
| Shareholders Equity | $558.2M | $529.9M | $525.8M |
| YoY Change | |||
| Total Liabilities & Shareholders Equity | $1.501B | $1.417B | $1.486B |
| YoY Change | 5.98% | -3.66% | 3.2% |
Cashflow Statement
| Concept | 2018 | 2017 Q4 | 2017 Q3 |
|---|---|---|---|
| OPERATING ACTIVITIES | |||
| Net Income | $63.87M | $12.87M | $21.01M |
| YoY Change | -7.92% | 14.77% | -2.93% |
| Depreciation, Depletion And Amortization | $40.43M | $9.900M | $9.854M |
| YoY Change | 3.57% | -1.0% | 3.88% |
| Cash From Operating Activities | $136.8M | $24.40M | $44.80M |
| YoY Change | -5.38% | 25.77% | 54.48% |
| INVESTING ACTIVITIES | |||
| Capital Expenditures | $126.6M | -$35.20M | -$32.00M |
| YoY Change | 11.88% | 17.33% | -7.51% |
| Acquisitions | |||
| YoY Change | |||
| Other Investing Activities | $1.553M | $100.0K | -$1.600M |
| YoY Change | 26.36% | 23.08% | |
| Cash From Investing Activities | -$128.0M | -$35.10M | -$33.60M |
| YoY Change | 59.99% | 17.79% | -6.41% |
| FINANCING ACTIVITIES | |||
| Cash Dividend Paid | $38.94M | ||
| YoY Change | 6.92% | ||
| Common Stock Issuance & Retirement, Net | |||
| YoY Change | |||
| Debt Paid & Issued, Net | $326.0K | ||
| YoY Change | -0.91% | ||
| Cash From Financing Activities | -$1.805M | 4.400M | -6.700M |
| YoY Change | -97.21% | -45.0% | -228.85% |
| NET CHANGE | |||
| Cash From Operating Activities | $136.8M | 24.40M | 44.80M |
| Cash From Investing Activities | -$128.0M | -35.10M | -33.60M |
| Cash From Financing Activities | -$1.805M | 4.400M | -6.700M |
| Net Change In Cash | $6.927M | -6.300M | 4.500M |
| YoY Change | -3220.27% | 162.5% | -364.71% |
| FREE CASH FLOW | |||
| Cash From Operating Activities | $136.8M | $24.40M | $44.80M |
| Capital Expenditures | $126.6M | -$35.20M | -$32.00M |
| Free Cash Flow | $10.21M | $59.60M | $76.80M |
| YoY Change | -67.5% | 20.65% | 20.75% |
Facts In Submission
| Frame | Concept Type | Concept / XBRL Key | Value | Unit |
|---|---|---|---|---|
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Allowance For Doubtful Accounts Receivable Charge Offs Net Of Recoveries
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Allowance For Doubtful Accounts Related To Other Accounts Receivable
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Allowance For Doubtful Accounts Related To Other Accounts Receivable
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Allowance For Doubtful Accounts Related To Other Accounts Receivable
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Allowance For Doubtful Accounts Related To Receivable From Customer
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Assets Other Than Property Plant And Equipment Net
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Deferred Tax Assets Contributions And Advances
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Deferred Tax Assets Contributions And Advances
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Proceedsfrom Stock Options Exercised Distributedto Subsidiaries
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Property Plant And Equipment And Investments Other And Goodwill Net
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Property Plant And Equipment And Investments Other Net
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Property Plant And Equipment Before Construction Work In Progress
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Property Plant And Equipment Before Construction Work In Progress
PropertyPlantAndEquipmentBeforeConstructionWorkInProgress
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Provision For Doubtful Accounts Continuing Operation
ProvisionForDoubtfulAccountsContinuingOperation
|
619000 | USD |
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Provision For Doubtful Accounts Continuing Operation
ProvisionForDoubtfulAccountsContinuingOperation
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989000 | USD |
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Provision For Doubtful Accounts Continuing Operation
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Regulatory And Other Assets
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Revenue Performance Obligation Payment Terms
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Share Based Compensation Arrangementsby Share Based Payment Award Options Minimum Agefor Awardsto Vest Immediately
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Supply Cost Balancing Accounts
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Supply Cost Balancing Accounts
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Supply Cost Balancing Accounts
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Undistributed Earnings Allocated To Common Stock
UndistributedEarningsAllocatedToCommonStock
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Undistributed Earnings Allocated To Common Stock
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Undistributed Earnings Allocated To Common Stock
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|
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Unrealizedlossonpurchasedpowercontracts
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|
311000 | USD |
| CY2017Q4 | awr |
Utilities Electric Property Plant And Equipment Gross
UtilitiesElectricPropertyPlantAndEquipmentGross
|
99726000 | USD |
| CY2018Q4 | awr |
Utilities Electric Property Plant And Equipment Gross
UtilitiesElectricPropertyPlantAndEquipmentGross
|
106064000 | USD |
| CY2017Q4 | awr |
Utilities Property Plant And Equipment Gross
UtilitiesPropertyPlantAndEquipmentGross
|
1658935000 | USD |
| CY2018Q4 | awr |
Utilities Property Plant And Equipment Gross
UtilitiesPropertyPlantAndEquipmentGross
|
1755599000 | USD |
| CY2017Q4 | awr |
Utilities Water Property Plant And Equipment Gross
UtilitiesWaterPropertyPlantAndEquipmentGross
|
1559209000 | USD |
| CY2018Q4 | awr |
Utilities Water Property Plant And Equipment Gross
UtilitiesWaterPropertyPlantAndEquipmentGross
|
1649535000 | USD |
| CY2016 | awr |
Weighted Average Dividends Common Stock
WeightedAverageDividendsCommonStock
|
33408000 | USD |
| CY2017 | awr |
Weighted Average Dividends Common Stock
WeightedAverageDividendsCommonStock
|
36417000 | USD |
| CY2018 | awr |
Weighted Average Dividends Common Stock
WeightedAverageDividendsCommonStock
|
38937000 | USD |
| CY2018 | dei |
Amendment Flag
AmendmentFlag
|
false | |
| CY2018 | dei |
Current Fiscal Year End Date
CurrentFiscalYearEndDate
|
--12-31 | |
| CY2018 | dei |
Document Fiscal Period Focus
DocumentFiscalPeriodFocus
|
FY | |
| CY2018 | dei |
Document Fiscal Year Focus
DocumentFiscalYearFocus
|
2018 | |
| CY2018 | dei |
Document Period End Date
DocumentPeriodEndDate
|
2018-12-31 | |
| CY2018 | dei |
Document Type
DocumentType
|
10-K | |
| CY2018 | dei |
Entity Central Index Key
EntityCentralIndexKey
|
0001056903 | |
| CY2019Q1 | dei |
Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
|
36774205 | shares |
| CY2018 | dei |
Entity Current Reporting Status
EntityCurrentReportingStatus
|
Yes | |
| CY2018 | dei |
Entity Filer Category
EntityFilerCategory
|
Large Accelerated Filer | |
| CY2018Q2 | dei |
Entity Public Float
EntityPublicFloat
|
2099687000 | USD |
| CY2019Q1 | dei |
Entity Public Float
EntityPublicFloat
|
2625678000 | USD |
| CY2018 | dei |
Entity Registrant Name
EntityRegistrantName
|
AMERICAN STATES WATER CO | |
| CY2018 | dei |
Entity Voluntary Filers
EntityVoluntaryFilers
|
No | |
| CY2018 | dei |
Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
|
Yes | |
| CY2017Q4 | us-gaap |
Accounts And Other Receivables Net Current
AccountsAndOtherReceivablesNetCurrent
|
8251000 | USD |
| CY2018Q4 | us-gaap |
Accounts And Other Receivables Net Current
AccountsAndOtherReceivablesNetCurrent
|
3103000 | USD |
| CY2017Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
50978000 | USD |
| CY2018Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
59532000 | USD |
| CY2017Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
26127000 | USD |
| CY2018Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
23395000 | USD |
| CY2017Q4 | us-gaap |
Accrual For Taxes Other Than Income Taxes Current
AccrualForTaxesOtherThanIncomeTaxesCurrent
|
7344000 | USD |
| CY2018Q4 | us-gaap |
Accrual For Taxes Other Than Income Taxes Current
AccrualForTaxesOtherThanIncomeTaxesCurrent
|
10094000 | USD |
| CY2017Q4 | us-gaap |
Accumulated Deferred Investment Tax Credit
AccumulatedDeferredInvestmentTaxCredit
|
1436000 | USD |
| CY2018Q4 | us-gaap |
Accumulated Deferred Investment Tax Credit
AccumulatedDeferredInvestmentTaxCredit
|
1367000 | USD |
| CY2016 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
1201000 | USD |
| CY2017 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
1789000 | USD |
| CY2018 | us-gaap |
Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
|
2798000 | USD |
| CY2016 | us-gaap |
Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation
AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation
|
581000 | USD |
| CY2016 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
2538000 | USD |
| CY2017 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
2885000 | USD |
| CY2018 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
3851000 | USD |
| CY2015Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
|
944000 | USD |
| CY2016Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
|
764000 | USD |
| CY2017Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
|
1041000 | USD |
| CY2018Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
|
951000 | USD |
| CY2016 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
1900000 | USD |
| CY2017 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
1500000 | USD |
| CY2018 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
1100000 | USD |
| CY2016Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
4393000 | USD |
| CY2017Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
4963000 | USD |
| CY2018Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
5228000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
237000 | USD |
| CY2018 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
55000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
562000 | USD |
| CY2018 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
256000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
229000 | USD |
| CY2018 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
46000 | USD |
| CY2017Q4 | us-gaap |
Assets
Assets
|
1416734000 | USD |
| CY2018Q4 | us-gaap |
Assets
Assets
|
1501433000 | USD |
| CY2017Q4 | us-gaap |
Assets Current
AssetsCurrent
|
155463000 | USD |
| CY2018Q4 | us-gaap |
Assets Current
AssetsCurrent
|
131468000 | USD |
| CY2017Q4 | us-gaap |
Billings In Excess Of Cost Current
BillingsInExcessOfCostCurrent
|
3911000 | USD |
| CY2018Q4 | us-gaap |
Billings In Excess Of Cost Current
BillingsInExcessOfCostCurrent
|
7530000 | USD |
| CY2016 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
17236000 | USD |
| CY2017 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
20131000 | USD |
| CY2018 | us-gaap |
Capital Expenditures Incurred But Not Yet Paid
CapitalExpendituresIncurredButNotYetPaid
|
27403000 | USD |
| CY2017Q4 | us-gaap |
Capitalization Longterm Debt And Equity
CapitalizationLongtermDebtAndEquity
|
850984000 | USD |
| CY2018Q4 | us-gaap |
Capitalization Longterm Debt And Equity
CapitalizationLongtermDebtAndEquity
|
839310000 | USD |
| CY2016Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
436000 | USD |
| CY2017Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
214000 | USD |
| CY2018Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
7141000 | USD |
| CY2015Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value Including Discontinued Operations
CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations
|
4364000 | USD |
| CY2016Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value Including Discontinued Operations
CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations
|
436000 | USD |
| CY2017Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value Including Discontinued Operations
CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations
|
214000 | USD |
| CY2018Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value Including Discontinued Operations
CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations
|
7141000 | USD |
| CY2016 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
-3928000 | USD |
| CY2017 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
-222000 | USD |
| CY2018 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
6927000 | USD |
| CY2017Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
0 | USD |
| CY2018Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
0 | USD |
| CY2016 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
0.914 | |
| CY2017 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
0.994 | |
| CY2018 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
1.06 | |
| CY2017Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
60000000 | shares |
| CY2018Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
60000000 | shares |
| CY2017Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
36680794 | shares |
| CY2018Q4 | us-gaap |
Common Stock Shares Outstanding
CommonStockSharesOutstanding
|
36757842 | shares |
| CY2017Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
250124000 | USD |
| CY2018Q4 | us-gaap |
Common Stock Value
CommonStockValue
|
253689000 | USD |
| CY2016 | us-gaap |
Construction And Development Costs
ConstructionAndDevelopmentCosts
|
53720000 | USD |
| CY2017 | us-gaap |
Construction And Development Costs
ConstructionAndDevelopmentCosts
|
49838000 | USD |
| CY2018 | us-gaap |
Construction And Development Costs
ConstructionAndDevelopmentCosts
|
53906000 | USD |
| CY2017Q4 | us-gaap |
Construction In Progress Gross
ConstructionInProgressGross
|
63835000 | USD |
| CY2018Q4 | us-gaap |
Construction In Progress Gross
ConstructionInProgressGross
|
78055000 | USD |
| CY2017Q4 | us-gaap |
Contract With Customer Asset Gross Current
ContractWithCustomerAssetGrossCurrent
|
0 | USD |
| CY2018Q4 | us-gaap |
Contract With Customer Asset Gross Current
ContractWithCustomerAssetGrossCurrent
|
22169000 | USD |
| CY2017Q4 | us-gaap |
Contract With Customer Asset Gross Noncurrent
ContractWithCustomerAssetGrossNoncurrent
|
0 | USD |
| CY2018Q4 | us-gaap |
Contract With Customer Asset Gross Noncurrent
ContractWithCustomerAssetGrossNoncurrent
|
2278000 | USD |
| CY2018 | us-gaap |
Contract With Customer Liability Revenue Recognized
ContractWithCustomerLiabilityRevenueRecognized
|
3700000 | USD |
| CY2016 | us-gaap |
Contracts Revenue
ContractsRevenue
|
97385000 | USD |
| CY2017 | us-gaap |
Contracts Revenue
ContractsRevenue
|
100302000 | USD |
| CY2018 | us-gaap |
Contracts Revenue
ContractsRevenue
|
107208000 | USD |
| CY2016 | us-gaap |
Contribution Of Property
ContributionOfProperty
|
5395000 | USD |
| CY2017 | us-gaap |
Contribution Of Property
ContributionOfProperty
|
2082000 | USD |
| CY2018 | us-gaap |
Contribution Of Property
ContributionOfProperty
|
2082000 | USD |
| CY2017Q4 | us-gaap |
Contributions In Aid Of Construction
ContributionsInAidOfConstruction
|
123602000 | USD |
| CY2018Q4 | us-gaap |
Contributions In Aid Of Construction
ContributionsInAidOfConstruction
|
124385000 | USD |
| CY2016 | us-gaap |
Cost Of Property Repairs And Maintenance
CostOfPropertyRepairsAndMaintenance
|
16470000 | USD |
| CY2017 | us-gaap |
Cost Of Property Repairs And Maintenance
CostOfPropertyRepairsAndMaintenance
|
15176000 | USD |
| CY2018 | us-gaap |
Cost Of Property Repairs And Maintenance
CostOfPropertyRepairsAndMaintenance
|
15682000 | USD |
| CY2016 | us-gaap |
Cost Of Purchased Power
CostOfPurchasedPower
|
10387000 | USD |
| CY2017 | us-gaap |
Cost Of Purchased Power
CostOfPurchasedPower
|
10720000 | USD |
| CY2018 | us-gaap |
Cost Of Purchased Power
CostOfPurchasedPower
|
11590000 | USD |
| CY2016 | us-gaap |
Cost Of Purchased Water
CostOfPurchasedWater
|
64442000 | USD |
| CY2017 | us-gaap |
Cost Of Purchased Water
CostOfPurchasedWater
|
68302000 | USD |
| CY2018 | us-gaap |
Cost Of Purchased Water
CostOfPurchasedWater
|
68904000 | USD |
| CY2017Q4 | us-gaap |
Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected After One Year
CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedAfterOneYear
|
25426000 | USD |
| CY2018Q4 | us-gaap |
Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected After One Year
CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedAfterOneYear
|
0 | USD |
| CY2017Q4 | us-gaap |
Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year
CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear
|
41387000 | USD |
| CY2018Q4 | us-gaap |
Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year
CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear
|
0 | USD |
| CY2016 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
2297000 | USD |
| CY2017 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
20978000 | USD |
| CY2018 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
17252000 | USD |
| CY2016 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
7095000 | USD |
| CY2017 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
26822000 | USD |
| CY2018 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
23790000 | USD |
| CY2016 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
4798000 | USD |
| CY2017 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
5844000 | USD |
| CY2018 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
6538000 | USD |
| CY2017Q4 | us-gaap |
Customer Advances For Construction
CustomerAdvancesForConstruction
|
67465000 | USD |
| CY2018Q4 | us-gaap |
Customer Advances For Construction
CustomerAdvancesForConstruction
|
66305000 | USD |
| CY2017Q4 | us-gaap |
Debt And Capital Lease Obligations
DebtAndCapitalLeaseObligations
|
325265000 | USD |
| CY2018Q4 | us-gaap |
Debt And Capital Lease Obligations
DebtAndCapitalLeaseObligations
|
324978000 | USD |
| CY2016 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
26715000 | USD |
| CY2017 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
11543000 | USD |
| CY2018 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-4334000 | USD |
| CY2017Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
3902000 | USD |
| CY2018Q4 | us-gaap |
Deferred Finance Costs Net
DeferredFinanceCostsNet
|
3571000 | USD |
| CY2016 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
27640000 | USD |
| CY2017 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
12152000 | USD |
| CY2018 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-5773000 | USD |
| CY2017Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
156871000 | USD |
| CY2018Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
155884000 | USD |
| CY2016 | us-gaap |
Deferred Income Taxes And Tax Credits
DeferredIncomeTaxesAndTaxCredits
|
27640000 | USD |
| CY2017 | us-gaap |
Deferred Income Taxes And Tax Credits
DeferredIncomeTaxesAndTaxCredits
|
12153000 | USD |
| CY2018 | us-gaap |
Deferred Income Taxes And Tax Credits
DeferredIncomeTaxesAndTaxCredits
|
-5773000 | USD |
| CY2016 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
925000 | USD |
| CY2017 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
609000 | USD |
| CY2018 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
-1439000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
41180000 | USD |
| CY2018Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
41688000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
1934000 | USD |
| CY2018Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
2988000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
115691000 | USD |
| CY2018Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
114196000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
|
115703000 | USD |
| CY2018Q4 | us-gaap |
Deferred Tax Liabilities Noncurrent
DeferredTaxLiabilitiesNoncurrent
|
114216000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
130115000 | USD |
| CY2018Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
131413000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Liabilities Regulatory Assets
DeferredTaxLiabilitiesRegulatoryAssets
|
16851000 | USD |
| CY2018Q4 | us-gaap |
Deferred Tax Liabilities Regulatory Assets
DeferredTaxLiabilitiesRegulatoryAssets
|
18146000 | USD |
| CY2018 | us-gaap |
Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1
|
659000 | USD |
| CY2018 | us-gaap |
Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1
DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1
|
35000 | USD |
| CY2018 | us-gaap |
Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation
|
759000 | USD |
| CY2018 | us-gaap |
Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components
DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents
|
41000 | USD |
| CY2016 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
2200000 | USD |
| CY2017 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
2300000 | USD |
| CY2018 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
2400000 | USD |
| CY2016 | us-gaap |
Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
|
951000 | USD |
| CY2017 | us-gaap |
Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
|
1087000 | USD |
| CY2018 | us-gaap |
Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
|
1300000 | USD |
| CY2016 | us-gaap |
Depreciation And Amortization
DepreciationAndAmortization
|
39109000 | USD |
| CY2017 | us-gaap |
Depreciation And Amortization
DepreciationAndAmortization
|
39273000 | USD |
| CY2018 | us-gaap |
Depreciation And Amortization
DepreciationAndAmortization
|
40663000 | USD |
| CY2016 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
38850000 | USD |
| CY2017 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
39031000 | USD |
| CY2018 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
40425000 | USD |
| CY2016 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
33408000 | USD |
| CY2017 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
36417000 | USD |
| CY2018 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
38937000 | USD |
| CY2016 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.63 | |
| CY2017Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.35 | |
| CY2017Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.62 | |
| CY2017Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.57 | |
| CY2017Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.35 | |
| CY2017 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.88 | |
| CY2018Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.29 | |
| CY2018Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.44 | |
| CY2016 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.62 | |
| CY2017Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.34 | |
| CY2018Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.62 | |
| CY2018Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.37 | |
| CY2018 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.73 | |
| CY2017Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.62 | |
| CY2017Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.57 | |
| CY2017Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.35 | |
| CY2017 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.88 | |
| CY2018Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.29 | |
| CY2018Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.44 | |
| CY2018Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.62 | |
| CY2018Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.37 | |
| CY2018 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.72 | |
| CY2016 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.368 | |
| CY2017 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.360 | |
| CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.220 | |
| CY2016 | us-gaap |
Electric Domestic Regulated Revenue
ElectricDomesticRegulatedRevenue
|
35771000 | USD |
| CY2017 | us-gaap |
Electric Domestic Regulated Revenue
ElectricDomesticRegulatedRevenue
|
33969000 | USD |
| CY2018 | us-gaap |
Electric Domestic Regulated Revenue
ElectricDomesticRegulatedRevenue
|
34350000 | USD |
| CY2017Q4 | us-gaap |
Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
|
12969000 | USD |
| CY2018Q4 | us-gaap |
Employee Related Liabilities Current
EmployeeRelatedLiabilitiesCurrent
|
13842000 | USD |
| CY2018Q4 | us-gaap |
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
|
300000 | USD |
| CY2016 | us-gaap |
Excess Tax Benefit From Share Based Compensation Financing Activities
ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
|
581000 | USD |
| CY2017 | us-gaap |
Excess Tax Benefit From Share Based Compensation Financing Activities
ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
|
0 | USD |
| CY2018 | us-gaap |
Excess Tax Benefit From Share Based Compensation Financing Activities
ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
|
0 | USD |
| CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
23331000 | USD |
| CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
24399000 | USD |
| CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
|
189000 | USD |
| CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
|
12000 | USD |
| CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Four
FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
|
12000 | USD |
| CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Three
FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
|
12000 | USD |
| CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Two
FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
|
90000 | USD |
| CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
|
31192000 | USD |
| CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
|
30822000 | USD |
| CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
7861000 | USD |
| CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
6423000 | USD |
| CY2017Q2 | us-gaap |
Gain Loss On Sale Of Properties
GainLossOnSaleOfProperties
|
8300000 | USD |
| CY2016 | us-gaap |
Gain Loss On Sales Of Assets And Asset Impairment Charges
GainLossOnSalesOfAssetsAndAssetImpairmentCharges
|
0 | USD |
| CY2017 | us-gaap |
Gain Loss On Sales Of Assets And Asset Impairment Charges
GainLossOnSalesOfAssetsAndAssetImpairmentCharges
|
8318000 | USD |
| CY2018 | us-gaap |
Gain Loss On Sales Of Assets And Asset Impairment Charges
GainLossOnSalesOfAssetsAndAssetImpairmentCharges
|
85000 | USD |
| CY2016 | us-gaap |
General And Administrative Expense
GeneralAndAdministrativeExpense
|
81518000 | USD |
| CY2017 | us-gaap |
General And Administrative Expense
GeneralAndAdministrativeExpense
|
81643000 | USD |
| CY2018 | us-gaap |
General And Administrative Expense
GeneralAndAdministrativeExpense
|
82595000 | USD |
| CY2017Q4 | us-gaap |
Goodwill
Goodwill
|
1116000 | USD |
| CY2018Q4 | us-gaap |
Goodwill
Goodwill
|
1116000 | USD |
| CY2016 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
34735000 | USD |
| CY2016 | us-gaap |
Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
|
0 | USD |
| CY2017 | us-gaap |
Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
|
0 | USD |
| CY2018 | us-gaap |
Impairment Of Long Lived Assets Held For Use
ImpairmentOfLongLivedAssetsHeldForUse
|
0 | USD |
| CY2016 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
94478000 | USD |
| CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
108341000 | USD |
| CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
81888000 | USD |
| CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
38974000 | USD |
| CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
18017000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
33067000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
37919000 | USD |
| CY2018 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
17196000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Depreciation
IncomeTaxReconciliationNondeductibleExpenseDepreciation
|
994000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Depreciation
IncomeTaxReconciliationNondeductibleExpenseDepreciation
|
845000 | USD |
| CY2018 | us-gaap |
Income Tax Reconciliation Nondeductible Expense Depreciation
IncomeTaxReconciliationNondeductibleExpenseDepreciation
|
429000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
121000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
-1008000 | USD |
| CY2018 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
-19000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
3029000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
4382000 | USD |
| CY2018 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
3693000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Tax Credits Investment
IncomeTaxReconciliationTaxCreditsInvestment
|
83000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Tax Credits Investment
IncomeTaxReconciliationTaxCreditsInvestment
|
93000 | USD |
| CY2018 | us-gaap |
Income Tax Reconciliation Tax Credits Investment
IncomeTaxReconciliationTaxCreditsInvestment
|
69000 | USD |
| CY2016 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
10916000 | USD |
| CY2017 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
13615000 | USD |
| CY2018 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
21084000 | USD |
| CY2017Q4 | us-gaap |
Income Taxes Receivable
IncomeTaxesReceivable
|
4737000 | USD |
| CY2018Q4 | us-gaap |
Income Taxes Receivable
IncomeTaxesReceivable
|
2164000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
|
1233000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
|
1671000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Accounts And Other Receivables
IncreaseDecreaseInAccountsAndOtherReceivables
|
-5151000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
-3442000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
4358000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
1282000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
1750000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
7671000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
-1882000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Billing In Excess Of Cost Of Earnings
IncreaseDecreaseInBillingInExcessOfCostOfEarnings
|
-1501000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Billing In Excess Of Cost Of Earnings
IncreaseDecreaseInBillingInExcessOfCostOfEarnings
|
1648000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Billing In Excess Of Cost Of Earnings
IncreaseDecreaseInBillingInExcessOfCostOfEarnings
|
3619000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Income Taxes
IncreaseDecreaseInIncomeTaxes
|
-6993000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Income Taxes
IncreaseDecreaseInIncomeTaxes
|
13206000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Income Taxes
IncreaseDecreaseInIncomeTaxes
|
2708000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Materials And Supplies
IncreaseDecreaseInMaterialsAndSupplies
|
-1121000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Materials And Supplies
IncreaseDecreaseInMaterialsAndSupplies
|
501000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Materials And Supplies
IncreaseDecreaseInMaterialsAndSupplies
|
980000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
3095000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
-1589000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
-928000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Pension And Postretirement Obligations
IncreaseDecreaseInPensionAndPostretirementObligations
|
-289000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Pension And Postretirement Obligations
IncreaseDecreaseInPensionAndPostretirementObligations
|
-878000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Pension And Postretirement Obligations
IncreaseDecreaseInPensionAndPostretirementObligations
|
-1086000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
-2239000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
1641000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Prepaid Deferred Expense And Other Assets
IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
|
519000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Regulatory Assets And Liabilities
IncreaseDecreaseInRegulatoryAssetsAndLiabilities
|
5610000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Regulatory Assets And Liabilities
IncreaseDecreaseInRegulatoryAssetsAndLiabilities
|
-24626000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Regulatory Assets And Liabilities
IncreaseDecreaseInRegulatoryAssetsAndLiabilities
|
-33834000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Unbilled Receivables
IncreaseDecreaseInUnbilledReceivables
|
4901000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Unbilled Receivables
IncreaseDecreaseInUnbilledReceivables
|
2020000 | USD |
| CY2018 | us-gaap |
Increase Decrease In Unbilled Receivables
IncreaseDecreaseInUnbilledReceivables
|
-2823000 | USD |
| CY2016 | us-gaap |
Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
|
198000 | shares |
| CY2017 | us-gaap |
Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
|
206000 | shares |
| CY2018 | us-gaap |
Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
|
203000 | shares |
| CY2017Q4 | us-gaap |
Indefinite Lived Intangible Assets Excluding Goodwill
IndefiniteLivedIntangibleAssetsExcludingGoodwill
|
422000 | USD |
| CY2018Q4 | us-gaap |
Indefinite Lived Intangible Assets Excluding Goodwill
IndefiniteLivedIntangibleAssetsExcludingGoodwill
|
422000 | USD |
| CY2016 | us-gaap |
Interest Expense
InterestExpense
|
21992000 | USD |
| CY2017 | us-gaap |
Interest Expense
InterestExpense
|
22582000 | USD |
| CY2018 | us-gaap |
Interest Expense
InterestExpense
|
23433000 | USD |
| CY2016 | us-gaap |
Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
|
21235000 | USD |
| CY2017 | us-gaap |
Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
|
20792000 | USD |
| CY2018 | us-gaap |
Interest Income Expense Nonoperating Net
InterestIncomeExpenseNonoperatingNet
|
19855000 | USD |
| CY2016 | us-gaap |
Interest Paid
InterestPaid
|
22305000 | USD |
| CY2017 | us-gaap |
Interest Paid
InterestPaid
|
22762000 | USD |
| CY2018 | us-gaap |
Interest Paid
InterestPaid
|
23471000 | USD |
| CY2017Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
3861000 | USD |
| CY2018Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
3865000 | USD |
| CY2017Q4 | us-gaap |
Inventory Raw Materials And Supplies
InventoryRawMaterialsAndSupplies
|
4795000 | USD |
| CY2018Q4 | us-gaap |
Inventory Raw Materials And Supplies
InventoryRawMaterialsAndSupplies
|
5775000 | USD |
| CY2016 | us-gaap |
Investment Income Interest
InvestmentIncomeInterest
|
757000 | USD |
| CY2017 | us-gaap |
Investment Income Interest
InvestmentIncomeInterest
|
1790000 | USD |
| CY2018 | us-gaap |
Investment Income Interest
InvestmentIncomeInterest
|
3578000 | USD |
| CY2016 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
2298000 | USD |
| CY2017 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
2448000 | USD |
| CY2018 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
2534000 | USD |
| CY2017Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
1416734000 | USD |
| CY2018Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
1501433000 | USD |
| CY2017Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
156662000 | USD |
| CY2018Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
146585000 | USD |
| CY2017Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
409088000 | USD |
| CY2018Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
515538000 | USD |
| CY2018Q4 | us-gaap |
Line Of Credit Facility Maximum Borrowing Capacity
LineOfCreditFacilityMaximumBorrowingCapacity
|
150000000.0 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt And Capital Lease Obligations
LongTermDebtAndCapitalLeaseObligations
|
321039000 | USD |
| CY2018Q4 | us-gaap |
Long Term Debt And Capital Lease Obligations
LongTermDebtAndCapitalLeaseObligations
|
281087000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt And Capital Lease Obligations Current
LongTermDebtAndCapitalLeaseObligationsCurrent
|
324000 | USD |
| CY2018Q4 | us-gaap |
Long Term Debt And Capital Lease Obligations Current
LongTermDebtAndCapitalLeaseObligationsCurrent
|
40320000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
324000 | USD |
| CY2018Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
40320000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
321039000 | USD |
| CY2018Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
281087000 | USD |
| CY2016 | us-gaap |
Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
|
30344000 | USD |
| CY2017 | us-gaap |
Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
|
-64743000 | USD |
| CY2018 | us-gaap |
Net Cash Provided By Used In Financing Activities Continuing Operations
NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
|
-1805000 | USD |
| CY2016 | us-gaap |
Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
|
-131221000 | USD |
| CY2017 | us-gaap |
Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
|
-80031000 | USD |
| CY2018 | us-gaap |
Net Cash Provided By Used In Investing Activities Continuing Operations
NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
|
-128042000 | USD |
| CY2016 | us-gaap |
Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
|
96949000 | USD |
| CY2017 | us-gaap |
Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
|
144552000 | USD |
| CY2018 | us-gaap |
Net Cash Provided By Used In Operating Activities Continuing Operations
NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
|
136774000 | USD |
| CY2016 | us-gaap |
Net Income Loss
NetIncomeLoss
|
59743000 | USD |
| CY2017Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
12701000 | USD |
| CY2017Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
22792000 | USD |
| CY2017Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
21006000 | USD |
| CY2017Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
12868000 | USD |
| CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
69367000 | USD |
| CY2018Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
10782000 | USD |
| CY2018Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
16348000 | USD |
| CY2018Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
22952000 | USD |
| CY2018Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
13789000 | USD |
| CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
63871000 | USD |
| CY2016 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
59411000 | USD |
| CY2017 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
68994000 | USD |
| CY2018 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
63538000 | USD |
| CY2016 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
59556000 | USD |
| CY2017 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
69170000 | USD |
| CY2018 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
63667000 | USD |
| CY2016 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
-19714000 | USD |
| CY2017 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
-18754000 | USD |
| CY2018 | us-gaap |
Nonoperating Income Expense
NonoperatingIncomeExpense
|
-19095000 | USD |
| CY2017Q4 | us-gaap |
Notes Payable To Bank Current
NotesPayableToBankCurrent
|
59000000 | USD |
| CY2018Q4 | us-gaap |
Notes Payable To Bank Current
NotesPayableToBankCurrent
|
0 | USD |
| CY2017Q4 | us-gaap |
Notes Payable To Bank Noncurrent
NotesPayableToBankNoncurrent
|
0 | USD |
| CY2018Q4 | us-gaap |
Notes Payable To Bank Noncurrent
NotesPayableToBankNoncurrent
|
95500000 | USD |
| CY2016 | us-gaap |
Operating Expenses
OperatingExpenses
|
321895000 | USD |
| CY2018Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
10000000 | USD |
| CY2017Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
21959000 | USD |
| CY2017 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
127095000 | USD |
| CY2018Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
18691000 | USD |
| CY2018Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
25568000 | USD |
| CY2018Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
33975000 | USD |
| CY2018Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
22749000 | USD |
| CY2018 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
100983000 | USD |
| CY2017 | us-gaap |
Operating Expenses
OperatingExpenses
|
313508000 | USD |
| CY2018 | us-gaap |
Operating Expenses
OperatingExpenses
|
335833000 | USD |
| CY2016 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
114192000 | USD |
| CY2017Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
24576000 | USD |
| CY2017Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
42026000 | USD |
| CY2017Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
38534000 | USD |
| CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
|
9003000 | USD |
| CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
|
2818000 | USD |
| CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
|
546000 | USD |
| CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
|
1007000 | USD |
| CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
|
1497000 | USD |
| CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
|
2530000 | USD |
| CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Thereafter
OperatingLeasesFutureMinimumPaymentsDueThereafter
|
605000 | USD |
| CY2017Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
5667000 | USD |
| CY2018Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
5322000 | USD |
| CY2016 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
28257000 | USD |
| CY2017 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
29994000 | USD |
| CY2018 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
31650000 | USD |
| CY2017Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
15109000 | USD |
| CY2018Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
10731000 | USD |
| CY2017Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
11009000 | USD |
| CY2018Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
11262000 | USD |
| CY2016 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
397000 | USD |
| CY2017 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
1525000 | USD |
| CY2018 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-655000 | USD |
| CY2016 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
1521000 | USD |
| CY2017 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
2038000 | USD |
| CY2018 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
760000 | USD |
| CY2016 | us-gaap |
Payments Of Dividends
PaymentsOfDividends
|
33408000 | USD |
| CY2017 | us-gaap |
Payments Of Dividends
PaymentsOfDividends
|
36417000 | USD |
| CY2018 | us-gaap |
Payments Of Dividends
PaymentsOfDividends
|
38937000 | USD |
| CY2016 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
1354000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
1229000 | USD |
| CY2018 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
1553000 | USD |
| CY2016 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
129867000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
113126000 | USD |
| CY2018 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
126561000 | USD |
| CY2017 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
-1292000 | USD |
| CY2018 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
-1253000 | USD |
| CY2017Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
57695000 | USD |
| CY2018Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
57636000 | USD |
| CY2016 | us-gaap |
Preferred Stock Dividends And Other Adjustments
PreferredStockDividendsAndOtherAdjustments
|
187000 | USD |
| CY2017 | us-gaap |
Preferred Stock Dividends And Other Adjustments
PreferredStockDividendsAndOtherAdjustments
|
197000 | USD |
| CY2018 | us-gaap |
Preferred Stock Dividends And Other Adjustments
PreferredStockDividendsAndOtherAdjustments
|
204000 | USD |
| CY2017Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
5596000 | USD |
| CY2018Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
6063000 | USD |
| CY2016 | us-gaap |
Proceeds From Contribution In Aid Of Construction
ProceedsFromContributionInAidOfConstruction
|
6660000 | USD |
| CY2017 | us-gaap |
Proceeds From Contribution In Aid Of Construction
ProceedsFromContributionInAidOfConstruction
|
7275000 | USD |
| CY2018 | us-gaap |
Proceeds From Contribution In Aid Of Construction
ProceedsFromContributionInAidOfConstruction
|
5551000 | USD |
| CY2016 | us-gaap |
Proceeds From Income Tax Refunds
ProceedsFromIncomeTaxRefunds
|
2100000 | USD |
| CY2017Q1 | us-gaap |
Proceeds From Income Tax Refunds
ProceedsFromIncomeTaxRefunds
|
2200000 | USD |
| CY2016 | us-gaap |
Proceeds From Payments For Other Financing Activities
ProceedsFromPaymentsForOtherFinancingActivities
|
-1490000 | USD |
| CY2017Q2 | us-gaap |
Proceeds From Sale Of Other Assets1
ProceedsFromSaleOfOtherAssets1
|
34300000 | USD |
| CY2016 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
0 | USD |
| CY2017 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
34324000 | USD |
| CY2018 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
72000 | USD |
| CY2016 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
235000 | USD |
| CY2017 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
909000 | USD |
| CY2018 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
546000 | USD |
| CY2016 | us-gaap |
Property Plant And Equipment Additions
PropertyPlantAndEquipmentAdditions
|
129867000 | USD |
| CY2017 | us-gaap |
Property Plant And Equipment Additions
PropertyPlantAndEquipmentAdditions
|
113126000 | USD |
| CY2018 | us-gaap |
Property Plant And Equipment Additions
PropertyPlantAndEquipmentAdditions
|
126561000 | USD |
| CY2017Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
1674527000 | USD |
| CY2018Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
1780110000 | USD |
| CY2016Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
1150926000 | USD |
| CY2017Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
1204992000 | USD |
| CY2018Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
1296310000 | USD |
| CY2016 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
619000 | USD |
| CY2017 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
989000 | USD |
| CY2018 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
841000 | USD |
| CY2017Q4 | us-gaap |
Public Utilities Property Plant And Equipment Accumulated Depreciation
PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
|
533370000 | USD |
| CY2018Q4 | us-gaap |
Public Utilities Property Plant And Equipment Accumulated Depreciation
PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation
|
561855000 | USD |
| CY2016 | us-gaap |
Regulated Operating Revenue Water
RegulatedOperatingRevenueWater
|
302931000 | USD |
| CY2017 | us-gaap |
Regulated Operating Revenue Water
RegulatedOperatingRevenueWater
|
306332000 | USD |
| CY2018 | us-gaap |
Regulated Operating Revenue Water
RegulatedOperatingRevenueWater
|
295258000 | USD |
| CY2017Q4 | us-gaap |
Regulatory Assets Current
RegulatoryAssetsCurrent
|
34220000 | USD |
| CY2018Q4 | us-gaap |
Regulatory Assets Current
RegulatoryAssetsCurrent
|
16527000 | USD |
| CY2017Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
32178000 | USD |
| CY2018Q4 | us-gaap |
Regulatory Liability Noncurrent
RegulatoryLiabilityNoncurrent
|
44867000 | USD |
| CY2016 | us-gaap |
Related Party Transaction Amounts Of Transaction
RelatedPartyTransactionAmountsOfTransaction
|
3900000 | USD |
| CY2017 | us-gaap |
Related Party Transaction Amounts Of Transaction
RelatedPartyTransactionAmountsOfTransaction
|
4000000 | USD |
| CY2018 | us-gaap |
Related Party Transaction Amounts Of Transaction
RelatedPartyTransactionAmountsOfTransaction
|
4200000 | USD |
| CY2018 | us-gaap |
Related Party Transaction Terms And Manner Of Settlement
RelatedPartyTransactionTermsAndMannerOfSettlement
|
P24M | |
| CY2016 | us-gaap |
Repayments Of Advances For Construction
RepaymentsOfAdvancesForConstruction
|
3921000 | USD |
| CY2017 | us-gaap |
Repayments Of Advances For Construction
RepaymentsOfAdvancesForConstruction
|
3889000 | USD |
| CY2018 | us-gaap |
Repayments Of Advances For Construction
RepaymentsOfAdvancesForConstruction
|
3886000 | USD |
| CY2016 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
313000 | USD |
| CY2017 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
329000 | USD |
| CY2018 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
326000 | USD |
| CY2017Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
279821000 | USD |
| CY2018Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
304534000 | USD |
| CY2018Q4 | us-gaap |
Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
|
0 | USD |
| CY2018 | us-gaap |
Revenues
Revenues
|
436816000 | USD |
| CY2018 | us-gaap |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
|
10000000 | USD |
| CY2016 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
436087000 | USD |
| CY2017Q1 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
98810000 | USD |
| CY2017Q2 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
113195000 | USD |
| CY2017Q3 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
124418000 | USD |
| CY2017Q4 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
104180000 | USD |
| CY2017 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
440603000 | USD |
| CY2018Q1 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
94728000 | USD |
| CY2018Q2 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
106901000 | USD |
| CY2018Q3 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
124182000 | USD |
| CY2018Q4 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
111005000 | USD |
| CY2018 | us-gaap |
Sales Revenue Net
SalesRevenueNet
|
436816000 | USD |
| CY2016 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
2538000 | USD |
| CY2017 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
2885000 | USD |
| CY2018 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
3851000 | USD |
| CY2018Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
35560 | shares |
| CY2016 | us-gaap |
Stock Issued During Period Shares New Issues
StockIssuedDuringPeriodSharesNewIssues
|
56900 | shares |
| CY2017 | us-gaap |
Stock Issued During Period Shares New Issues
StockIssuedDuringPeriodSharesNewIssues
|
56498 | shares |
| CY2018 | us-gaap |
Stock Issued During Period Shares New Issues
StockIssuedDuringPeriodSharesNewIssues
|
44906 | shares |
| CY2016 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
12546 | shares |
| CY2017 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
52936 | shares |
| CY2018 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
32142 | shares |
| CY2016 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
235000 | USD |
| CY2017 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
909000 | USD |
| CY2018 | us-gaap |
Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
|
546000 | USD |
| CY2015Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
465945000 | USD |
| CY2016Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
494297000 | USD |
| CY2017Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
529945000 | USD |
| CY2018Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
558223000 | USD |
| CY2016 | us-gaap |
Taxes Excluding Income And Excise Taxes
TaxesExcludingIncomeAndExciseTaxes
|
16801000 | USD |
| CY2017 | us-gaap |
Taxes Excluding Income And Excise Taxes
TaxesExcludingIncomeAndExciseTaxes
|
17905000 | USD |
| CY2018 | us-gaap |
Taxes Excluding Income And Excise Taxes
TaxesExcludingIncomeAndExciseTaxes
|
18404000 | USD |
| CY2017Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
225000 | USD |
| CY2018Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
360000 | USD |
| CY2017Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
26411000 | USD |
| CY2017 | us-gaap |
Undistributed Earnings Loss Allocated To Participating Securities Diluted
UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted
|
-176000 | USD |
| CY2018 | us-gaap |
Undistributed Earnings Loss Allocated To Participating Securities Diluted
UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted
|
-129000 | USD |
| CY2016Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
0 | USD |
| CY2017Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
0 | USD |
| CY2018Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
0 | USD |
| CY2016 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
36750000 | shares |
| CY2017 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
36844000 | shares |
| CY2018 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
36936000 | shares |
| CY2016 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
36552000 | shares |
| CY2017 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
36638000 | shares |
| CY2018Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
23588000 | USD |
| CY2016 | us-gaap |
Undistributed Earnings
UndistributedEarnings
|
26148000 | USD |
| CY2017 | us-gaap |
Undistributed Earnings
UndistributedEarnings
|
32753000 | USD |
| CY2018 | us-gaap |
Undistributed Earnings
UndistributedEarnings
|
24730000 | USD |
| CY2016 | us-gaap |
Undistributed Earnings Loss Allocated To Participating Securities Basic
UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
|
-145000 | USD |
| CY2017 | us-gaap |
Undistributed Earnings Loss Allocated To Participating Securities Basic
UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic
|
-176000 | USD |
| CY2016 | us-gaap |
Undistributed Earnings Loss Allocated To Participating Securities Diluted
UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted
|
-145000 | USD |
| CY2018 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
36733000 | shares |
