$CPK
CHESAPEAKE UTILITIES CORP Stock $cpk

$cpk Overview Financials Valuation SEC Filings Company Website

2015 Q4 Form 10-K Financial Statement

#000162828016011868 Filed on February 29, 2016

Income Statement

Concept	2015 Q4	2014 Q4	2014 Q3
Revenue	$104.6M	$120.4M	$91.62M
YoY Change	-13.14%	-2.04%	5.86%
Cost Of Revenue	$45.20M	$63.40M	$46.00M
YoY Change	-28.71%	-6.63%	3.6%
Gross Profit	$59.40M	$57.00M	$45.60M
YoY Change	4.21%	3.64%	8.31%
Gross Profit Margin	56.81%	47.35%	49.77%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$7.800M	$6.200M	$6.774M
YoY Change	25.81%	5.08%	7.97%
% of Gross Profit	13.13%	10.88%	14.86%
Operating Expenses	$43.20M	$37.70M	$83.83M
YoY Change	14.59%	2.72%	7.71%
Operating Profit	$16.17M	$12.41M	$7.792M
YoY Change	30.33%	-32.24%	-10.64%
Interest Expense	-$2.600M	-$2.500M	$2.495M
YoY Change	4.0%	19.05%	23.15%
% of Operating Profit	-16.08%	-20.15%	32.02%
Other Income/Expense, Net	$300.0K	-$300.0K	-$32.00K
YoY Change	-200.0%		-131.68%
Pretax Income	$13.90M	$16.70M	$5.265M
YoY Change	-16.77%	3.09%	-22.52%
Income Tax	$5.300M	$6.600M	$2.085M
% Of Pretax Income	38.13%	39.52%	39.6%
Net Earnings	$8.619M	$10.10M	$3.180M
YoY Change	-14.64%	4.28%	-18.02%
Net Earnings / Revenue	8.24%	8.39%	3.47%
Basic Earnings Per Share	$0.56	$0.69	$0.22
Diluted Earnings Per Share	$0.56	$0.69	$0.22
COMMON SHARES
Basic Shares Outstanding	15.27M shares	14.58M shares	14.57M shares
Diluted Shares Outstanding			14.62M shares

Balance Sheet

Concept	2015 Q4	2014 Q4	2014 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.900M	$4.600M	$2.300M
YoY Change	-36.96%	35.29%	27.78%
Cash & Equivalents	$2.855M	$4.574M	$2.285M
Short-Term Investments
Other Short-Term Assets	$1.044M	$195.0K	$201.0K
YoY Change	435.38%	21.88%	25.63%
Inventory	$13.80M	$15.20M	$15.30M
Prepaid Expenses	$7.146M	$6.652M	$7.887M
Receivables	$41.01M	$53.30M	$43.27M
Other Receivables	$24.90M	$18.80M	$2.100M
Total Short-Term Assets	$111.7M	$122.4M	$88.33M
YoY Change	-8.72%	-3.19%	-9.85%
LONG-TERM ASSETS
Property, Plant & Equipment	$855.0M	$689.8M	$679.4M
YoY Change	23.95%	9.27%	11.4%
Goodwill	$14.55M	$4.952M	$4.625M
YoY Change	193.78%	13.73%	-1.93%
Intangibles	$2.222M	$2.404M	$2.675M
YoY Change	-7.57%	-19.19%	-13.01%
Long-Term Investments	$3.600M	$3.700M	$3.500M
YoY Change	-2.7%	19.35%	25.0%
Other Assets	$77.50M	$78.10M	$66.20M
YoY Change	-0.77%	17.27%	-13.12%
Total Long-Term Assets	$955.7M	$782.1M	$759.2M
YoY Change	22.2%	9.98%	8.53%
TOTAL ASSETS
Total Short-Term Assets	$111.7M	$122.4M	$88.33M
Total Long-Term Assets	$955.7M	$782.1M	$759.2M
Total Assets	$1.067B	$904.5M	$847.6M
YoY Change	18.02%	7.99%	6.27%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$39.30M	$44.61M	$33.37M
YoY Change	-11.9%	-16.59%	-18.63%
Accrued Expenses	$18.40M	$18.00M	$21.60M
YoY Change	2.22%	4.05%	11.92%
Deferred Revenue
YoY Change
Short-Term Debt	$173.4M	$88.23M	$71.17M
YoY Change	96.53%	-16.5%	-22.05%
Long-Term Debt Due	$9.151M	$9.109M	$11.11M
YoY Change	0.46%	-19.77%	34.96%
Total Short-Term Liabilities	$279.6M	$194.2M	$169.1M
YoY Change	43.95%	-12.48%	-13.31%
LONG-TERM LIABILITIES
Long-Term Debt	$149.0M	$158.5M	$165.0M
YoY Change	-5.98%	34.78%	53.75%
Other Long-Term Liabilities	$2.597M	$3.825M	$3.775M
YoY Change	-32.1%	49.94%	79.59%
Total Long-Term Liabilities	$151.6M	$162.3M	$168.8M
YoY Change	-6.6%	35.1%	54.25%
TOTAL LIABILITIES
Total Short-Term Liabilities	$279.6M	$194.2M	$169.1M
Total Long-Term Liabilities	$151.6M	$162.3M	$168.8M
Total Liabilities	$431.2M	$356.5M	$337.9M
YoY Change	20.94%	4.23%	10.98%
SHAREHOLDERS EQUITY
Retained Earnings	$166.2M	$142.3M	$136.2M
YoY Change	16.81%	14.52%	15.09%
Common Stock	$197.7M	$163.7M	$162.5M
YoY Change	20.81%	4.23%	3.93%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.883M	$1.258M	$1.217M
YoY Change	49.68%	11.92%	9.64%
Treasury Stock Shares
Shareholders Equity	$358.1M	$300.3M	$296.2M
YoY Change
Total Liabilities & Shareholders Equity	$1.067B	$904.5M	$847.6M
YoY Change	18.02%	7.99%	6.27%

Cashflow Statement

Concept	2015 Q4	2014 Q4	2014 Q3
OPERATING ACTIVITIES
Net Income	$8.619M	$10.10M	$3.180M
YoY Change	-14.64%	4.28%	-18.02%
Depreciation, Depletion And Amortization	$7.800M	$6.200M	$6.774M
YoY Change	25.81%	5.08%	7.97%
Cash From Operating Activities	$10.80M	$14.30M	$6.400M
YoY Change	-24.48%	120.0%	-47.97%
INVESTING ACTIVITIES
Capital Expenditures	-$46.30M	-$28.10M	-$26.20M
YoY Change	64.77%	-1.4%	-4.38%
Acquisitions
YoY Change
Other Investing Activities	$0.00	$10.20M	$0.00
YoY Change	-100.0%	-2140.0%	-100.0%
Cash From Investing Activities	-$46.30M	-$17.90M	-$26.20M
YoY Change	158.66%	-38.28%	5.22%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	34.60M	5.800M	19.60M
YoY Change	496.55%	-75.83%	61.98%
NET CHANGE
Cash From Operating Activities	10.80M	14.30M	6.400M
Cash From Investing Activities	-46.30M	-17.90M	-26.20M
Cash From Financing Activities	34.60M	5.800M	19.60M
Net Change In Cash	-900.0K	2.200M	-200.0K
YoY Change	-140.91%	46.67%	-60.0%
FREE CASH FLOW
Cash From Operating Activities	$10.80M	$14.30M	$6.400M
Capital Expenditures	-$46.30M	-$28.10M	-$26.20M
Free Cash Flow	$57.10M	$42.40M	$32.60M
YoY Change	34.67%	21.14%	-17.88%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2014Q4	cpk	Accounts Payable Subject To Master Netting Arrangement AccountsPayableSubjectToMasterNettingArrangement	1200000	USD
CY2015Q4	cpk	Accounts Payable Subject To Master Netting Arrangement AccountsPayableSubjectToMasterNettingArrangement	431000	USD
CY2014Q4	cpk	Accounts Receivable Subject To Master Netting Arrangement AccountsReceivableSubjectToMasterNettingArrangement	1600000	USD
CY2014Q4	cpk	Accrued Revenue AccruedRevenue	13617000	USD
CY2015Q4	cpk	Accrued Revenue AccruedRevenue	12452000	USD
CY2015Q4	cpk	Accumulated Other Comprehensive Income Loss Tax Effect AccumulatedOtherComprehensiveIncomeLossTaxEffect	3700000	USD
CY2015	cpk	Amortization Of Pre Merger Regulatory Asset AmortizationOfPreMergerRegulatoryAsset	769000	USD
CY2015Q4	cpk	Annual Estimate Of Volume Of Propane To Be Purchased AnnualEstimateOfVolumeOfPropaneToBePurchased	6500000	gal
CY2013	cpk	Capital Expenditure CapitalExpenditure	108039000	USD
CY2014	cpk	Capital Expenditure CapitalExpenditure	98057000	USD
CY2015	cpk	Capital Expenditure CapitalExpenditure	142713000	USD
CY2015	cpk	Committed Credit Facility Capacity Amount Expired CommittedCreditFacilityCapacityAmountExpired	40000000	USD
CY2015Q4	cpk	Common Stock Equity To Total Capitalization CommonStockEquityToTotalCapitalization	0.4
CY2015	cpk	Companys Exposure In Number Of Former Manufactured Gas Plant Sites CompanysExposureInNumberOfFormerManufacturedGasPlantSites	7	site
CY2015Q4	cpk	Cumulative Consolidated Net Income CumulativeConsolidatedNetIncome	285000000	USD
CY2011Q2	cpk	Debt Instrument Numberof Series DebtInstrumentNumberofSeries	2
CY2015Q4	cpk	Debt Instrument Restrictive Covenants Required Net Book Valueof Regulated Business Assets Percentageof Consolidated Total Assets DebtInstrumentRestrictiveCovenantsRequiredNetBookValueofRegulatedBusinessAssetsPercentageofConsolidatedTotalAssets	0.5
CY2015Q4	cpk	Deferrals Rates After Deferral Period Ends Minimum DeferralsRatesAfterDeferralPeriodEndsMinimum	0.01
CY2014Q4	cpk	Deferred Charges And Other Assets DeferredChargesAndOtherAssets	92334000	USD
CY2015Q4	cpk	Deferred Charges And Other Assets DeferredChargesAndOtherAssets	101098000	USD
CY2015	cpk	Deferred Compensation Employer Matching Contribution Rate DeferredCompensationEmployerMatchingContributionRate	0.06
CY2014Q4	cpk	Deferred Income Tax On Acquisition Adjustment DeferredIncomeTaxOnAcquisitionAdjustment	16140000	USD
CY2015Q4	cpk	Deferred Income Tax On Acquisition Adjustment DeferredIncomeTaxOnAcquisitionAdjustment	15490000	USD
CY2015	cpk	Deferred Revenue Refund Payment Period DeferredRevenueRefundPaymentPeriod	P1Y
CY2014Q4	cpk	Deferred Tax Asset Self Insurance Accruals DeferredTaxAssetSelfInsuranceAccruals	275000	USD
CY2015Q4	cpk	Deferred Tax Asset Self Insurance Accruals DeferredTaxAssetSelfInsuranceAccruals	278000	USD
CY2014Q4	cpk	Deferred Tax Assets Environmental DeferredTaxAssetsEnvironmental	2313000	USD
CY2015Q4	cpk	Deferred Tax Assets Environmental DeferredTaxAssetsEnvironmental	2445000	USD
CY2014Q4	cpk	Deferred Tax Liabilities Loss On Reacquired Debt DeferredTaxLiabilitiesLossOnReacquiredDebt	2222000	USD
CY2015Q4	cpk	Deferred Tax Liabilities Loss On Reacquired Debt DeferredTaxLiabilitiesLossOnReacquiredDebt	683000	USD
CY2015Q4	cpk	Defined Benefit Plan Numberof Plans DefinedBenefitPlanNumberofPlans	3	plan
CY2015Q4	cpk	Defined Benefit Plan Post Merger Regulatory Assets DefinedBenefitPlanPostMergerRegulatoryAssets	16612000	USD
CY2015Q4	cpk	Defined Benefit Plan Pre Merger Regulatory Assets DefinedBenefitPlanPreMergerRegulatoryAssets	2864000	USD
CY2015Q4	cpk	Defined Benefit Plan Regulatory Assets Before Premerger DefinedBenefitPlanRegulatoryAssetsBeforePremerger	25847000	USD
CY2015	cpk	Defined Contribution Plan Maximum Employer Contribution As Percentage Of Eligible Compensation DefinedContributionPlanMaximumEmployerContributionAsPercentageOfEligibleCompensation	1
CY2013	cpk	Depreciation And Accretion Included In Other Costs DepreciationAndAccretionIncludedInOtherCosts	6123000	USD
CY2014	cpk	Depreciation And Accretion Included In Other Costs DepreciationAndAccretionIncludedInOtherCosts	6577000	USD
CY2015	cpk	Depreciation And Accretion Included In Other Costs DepreciationAndAccretionIncludedInOtherCosts	6978000	USD
CY2013	cpk	Dividends Share Based Compensation Dividends And Dividends For Reinvestment Plan DividendsShareBasedCompensationDividendsAndDividendsForReinvestmentPlan	14758000	USD
CY2014	cpk	Dividends Share Based Compensation Dividends And Dividends For Reinvestment Plan DividendsShareBasedCompensationDividendsAndDividendsForReinvestmentPlan	15675000	USD
CY2015	cpk	Dividends Share Based Compensation Dividends And Dividends For Reinvestment Plan DividendsShareBasedCompensationDividendsAndDividendsForReinvestmentPlan	17222000	USD
CY2015	cpk	Employee Deferral Rate EmployeeDeferralRate	0.8
CY2015	cpk	Employee Minimum Age To Participate Under Defined Contribution Plan EmployeeMinimumAgeToParticipateUnderDefinedContributionPlan	P55Y
CY2015	cpk	Expected Amortization Of Pre Merger Regulatory Asset ExpectedAmortizationOfPreMergerRegulatoryAsset	0	USD
CY2015	cpk	Fixed Charge Coverage Ratio Maximum FixedChargeCoverageRatioMaximum	1.0
CY2015	cpk	Fixed Charge Coverage Ratio Minimum FixedChargeCoverageRatioMinimum	1.20
CY2015	cpk	Gain From A Settlement GainFromASettlement	1500000	USD
CY2015Q4	cpk	Line Of Credit Facility Maximum Borrowing Committed Capacity LineOfCreditFacilityMaximumBorrowingCommittedCapacity	170000000	USD
CY2010Q2	cpk	Long Term Debt Commitment LongTermDebtCommitment	36000000	USD
CY2014Q4	cpk	Longterm Debtand Capital Lease Obligations Netof Current Maturities LongtermDebtandCapitalLeaseObligationsNetofCurrentMaturities	158486000	USD
CY2015Q4	cpk	Longterm Debtand Capital Lease Obligations Netof Current Maturities LongtermDebtandCapitalLeaseObligationsNetofCurrentMaturities	149340000	USD
CY2015	cpk	Maturity Period To Be Considered Cash Equivalents MaturityPeriodToBeConsideredCashEquivalents	3
CY2015	cpk	Maximum Authorized Amount Under Corporate Guarantees And Letters Of Credit MaximumAuthorizedAmountUnderCorporateGuaranteesAndLettersOfCredit	50000000	USD
CY2015	cpk	Maximum Days To Make Default Good MaximumDaysToMakeDefaultGood	P30D
CY2015Q4	cpk	Maximum Debt To Net Capital Ratio Under Agreement Two MaximumDebtToNetCapitalRatioUnderAgreementTwo	65
CY2015Q4	cpk	Maximum Liabilities To Tangible Net Worth Ratio Under Agreement One MaximumLiabilitiesToTangibleNetWorthRatioUnderAgreementOne	3.75
CY2015Q4	cpk	Minimum Fixed Charge Coverage Ratio Under Agreement One MinimumFixedChargeCoverageRatioUnderAgreementOne	1.5
CY2015Q4	cpk	Minimum Interest Coverage Ratio Under Agreement Two MinimumInterestCoverageRatioUnderAgreementTwo	2
CY2015Q4	cpk	Net Operating Losses And Tax Carryforwards NetOperatingLossesAndTaxCarryforwards	25700000	USD
CY2013	cpk	Regulated Energy Cost Of Sales RegulatedEnergyCostOfSales	118818000	USD
CY2014	cpk	Regulated Energy Cost Of Sales RegulatedEnergyCostOfSales	134560000	USD
CY2015	cpk	Regulated Energy Cost Of Sales RegulatedEnergyCostOfSales	122814000	USD
CY2015Q4	cpk	Required Fixed Charge Coverage Ratio RequiredFixedChargeCoverageRatio	1.2
CY2013	cpk	Non Cash Performance Incentive Plan Expenses NonCashPerformanceIncentivePlanExpenses	850000	USD
CY2014	cpk	Non Cash Performance Incentive Plan Expenses NonCashPerformanceIncentivePlanExpenses	1533000	USD
CY2015	cpk	Non Cash Performance Incentive Plan Expenses NonCashPerformanceIncentivePlanExpenses	1594000	USD
CY2013	cpk	Non Cash Retirement Savings Plan Expenses NonCashRetirementSavingsPlanExpenses	0	USD
CY2014	cpk	Non Cash Retirement Savings Plan Expenses NonCashRetirementSavingsPlanExpenses	602000	USD
CY2015	cpk	Non Cash Retirement Savings Plan Expenses NonCashRetirementSavingsPlanExpenses	690000	USD
CY2015Q4	cpk	Restricted Payment RestrictedPayment	138400000	USD
CY2013Q4	cpk	Shares Held In Trust For Deferred Compensation Plan SharesHeldInTrustForDeferredCompensationPlan	51743	shares
CY2014Q4	cpk	Shares Held In Trust For Deferred Compensation Plan SharesHeldInTrustForDeferredCompensationPlan	57382	shares
CY2015Q4	cpk	Shares Held In Trust For Deferred Compensation Plan SharesHeldInTrustForDeferredCompensationPlan	70631	shares
CY2014Q4	cpk	Number Of Counterparties With Master Repurchase Agreements NumberOfCounterpartiesWithMasterRepurchaseAgreements	2	Counterparty
CY2015Q4	cpk	Number Of Counterparties With Master Repurchase Agreements NumberOfCounterpartiesWithMasterRepurchaseAgreements	2	Counterparty
CY2015	cpk	Number Of Expired Unsecured Committed Facilities NumberOfExpiredUnsecuredCommittedFacilities	2
CY2015	cpk	Number Of Financial Institutions With Bank Credit Facilities NumberOfFinancialInstitutionsWithBankCreditFacilities	3
CY2015	cpk	Number Of Unsecured Bank Credit Facilities NumberOfUnsecuredBankCreditFacilities	4
CY2015	cpk	Number Of Years Remaining To Purchase Propane Under Contract NumberOfYearsRemainingToPurchasePropaneUnderContract	P3Y
CY2013Q2	cpk	Number Of Years To Purchase Propane Under Contract NumberOfYearsToPurchasePropaneUnderContract	P6Y
CY2015	cpk	Operating Lease Term OperatingLeaseTerm	P20Y
CY2013	cpk	Operations Operations	91452000	USD
CY2013	cpk	Shares Issued Under Performance Incentive Plan Withheld For Employee Taxes SharesIssuedUnderPerformanceIncentivePlanWithheldForEmployeeTaxes	15617	shares
CY2014	cpk	Shares Issued Under Performance Incentive Plan Withheld For Employee Taxes SharesIssuedUnderPerformanceIncentivePlanWithheldForEmployeeTaxes	12687	shares
CY2015	cpk	Shares Issued Under Performance Incentive Plan Withheld For Employee Taxes SharesIssuedUnderPerformanceIncentivePlanWithheldForEmployeeTaxes	12620	shares
CY2015	cpk	Standby Letters Of Credit StandbyLettersOfCredit	5600000	USD
CY2014	cpk	Stock Issued During The Period Value Retirement Savings Plan And Dividend Reinvestment Plan StockIssuedDuringThePeriodValueRetirementSavingsPlanAndDividendReinvestmentPlan	1860000	USD
CY2014	cpk	Stock Splitin Formof Stock Dividend Adjustmentto Retained Earnings StockSplitinFormofStockDividendAdjustmenttoRetainedEarnings	9000	USD
CY2011Q1	cpk	Total Percentage Consideration Deposited In Escrow Account TotalPercentageConsiderationDepositedInEscrowAccount	1.25
CY2013	cpk	Treasury Stock Activity And Deferred Compensation Plan Activity During Period Value TreasuryStockActivityAndDeferredCompensationPlanActivityDuringPeriodValue	0	USD
CY2014	cpk	Treasury Stock Activity And Deferred Compensation Plan Activity During Period Value TreasuryStockActivityAndDeferredCompensationPlanActivityDuringPeriodValue	0	USD
CY2015	cpk	Treasury Stock Activity And Deferred Compensation Plan Activity During Period Value TreasuryStockActivityAndDeferredCompensationPlanActivityDuringPeriodValue	0	USD
CY2013	cpk	Unregulated Energy And Other Cost Of Sales UnregulatedEnergyAndOtherCostOfSales	126017000	USD
CY2014	cpk	Operations Operations	102197000	USD
CY2015	cpk	Operations Operations	107562000	USD
CY2015	cpk	Other Comprehensive Income Loss Adjustments Aoci Swap Agreements OtherComprehensiveIncomeLossAdjustmentsAOCISwapAgreements	-735000	USD
CY2015Q4	cpk	Participating Lenders In The Revolver ParticipatingLendersInTheRevolver	5
CY2014	cpk	Paymentsto Acquire Capital Leases PaymentstoAcquireCapitalLeases	1100000	USD
CY2015	cpk	Paymentsto Acquire Capital Leases PaymentstoAcquireCapitalLeases	1500000	USD
CY2015	cpk	Period Additional Cash And Discounts On Future Services Is Based On PeriodAdditionalCashAndDiscountsOnFutureServicesIsBasedOn	P5Y
CY2015	cpk	Purchase Commitment Maximum Volume Per Day PurchaseCommitmentMaximumVolumePerDay	13423
CY2015	cpk	Purchase Commitment Minimum Volume Per Day PurchaseCommitmentMinimumVolumePerDay	9982
CY2014Q4	cpk	Receivables And Other Deferred Charges ReceivablesAndOtherDeferredCharges	3164000	USD
CY2015Q4	cpk	Receivables And Other Deferred Charges ReceivablesAndOtherDeferredCharges	3165000	USD
CY2014	cpk	Unregulated Energy And Other Cost Of Sales UnregulatedEnergyAndOtherCostOfSales	143556000	USD
CY2015	cpk	Unregulated Energy And Other Cost Of Sales UnregulatedEnergyAndOtherCostOfSales	97228000	USD
CY2014Q4	cpk	Unregulated Energy Property Plant And Equipment UnregulatedEnergyPropertyPlantAndEquipment	84773000	USD
CY2015Q4	cpk	Unregulated Energy Property Plant And Equipment UnregulatedEnergyPropertyPlantAndEquipment	145734000	USD
CY2015Q4	cpk	Unrestricted Payment UnrestrictedPayment	146600000	USD
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-12-31
CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0000019745
CY2016Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	15276316	shares
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2015Q2	dei	Entity Public Float EntityPublicFloat	781900000	USD
CY2015	dei	Entity Registrant Name EntityRegistrantName	CHESAPEAKE UTILITIES CORP
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2015	dei	Trading Symbol TradingSymbol	CPK
CY2014Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	44610000	USD
CY2015Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	39300000	USD
CY2014Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	53300000	USD
CY2015Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	41007000	USD
CY2014Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	8923000	USD
CY2015Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	8942000	USD
CY2014Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	193369000	USD
CY2015Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	215313000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2533000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5676000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5840000	USD
CY2015	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P10Y
CY2014Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	156581000	USD
CY2015Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	190311000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1631000	USD
CY2014	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1958000	USD
CY2015	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1937000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	974000	USD
CY2014	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	1168000	USD
CY2015	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	1157000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1120000	USD
CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	909000	USD
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	373000	USD
CY2014	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	396000	USD
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	367000	USD
CY2014	us-gaap	Amortization Of Leased Asset AmortizationOfLeasedAsset	848000	USD
CY2015	us-gaap	Amortization Of Leased Asset AmortizationOfLeasedAsset	1300000	USD
CY2015Q4	us-gaap	Amount Of Restricted Net Assets For Consolidated And Unconsolidated Subsidiaries AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries	47100000	USD
CY2013	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2014	us-gaap	Asset Impairment Charges AssetImpairmentCharges	6881000	USD
CY2015	us-gaap	Asset Impairment Charges AssetImpairmentCharges	-1500000	USD
CY2014Q4	us-gaap	Assets Assets	904469000	USD
CY2015Q4	us-gaap	Assets Assets	1068586000	USD
CY2014Q4	us-gaap	Assets Current AssetsCurrent	122373000	USD
CY2015Q4	us-gaap	Assets Current AssetsCurrent	112538000	USD
CY2014Q4	us-gaap	Bank Overdrafts BankOverdrafts	2191000	USD
CY2015Q4	us-gaap	Bank Overdrafts BankOverdrafts	4640000	USD
CY2013Q4	us-gaap	Business Acquisition Equity Interest Issued Or Issuable Value Assigned BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned	0	USD
CY2014Q4	us-gaap	Business Acquisition Equity Interest Issued Or Issuable Value Assigned BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned	0	USD
CY2015Q4	us-gaap	Business Acquisition Equity Interest Issued Or Issuable Value Assigned BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned	30164000	USD
CY2015	us-gaap	Business Combination Separately Recognized Transactions Additional Disclosures Acquisition Cost Expensed BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed	514000	USD
CY2013	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	341000	USD
CY2014	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	459000	USD
CY2015	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2668000	USD
CY2014Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	6130000	USD
CY2015Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	4824000	USD
CY2013	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	7126000	USD
CY2014	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	6130000	USD
CY2015	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	4824000	USD
CY2014Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	6100000	USD
CY2015Q4	us-gaap	Capital Leases Balance Sheet Assets By Major Class Net CapitalLeasesBalanceSheetAssetsByMajorClassNet	4800000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	5100000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	1500000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	625000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	1500000	USD
CY2015Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	1500000	USD
CY2014Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	458808000	USD
CY2015Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	507478000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3361000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3356000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4574000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2855000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-5000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	1218000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1719000	USD
CY2015Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	843037	shares
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.0133
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.0667
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.1325
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.4867
CY2015Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.4867
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	25000000	shares
CY2015Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	25000000	shares
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	7100000	USD
CY2015Q4	us-gaap	Common Stock Value CommonStockValue	7432000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	35316000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	32949000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	40976000	USD
CY2014Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	13006000	USD
CY2015Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	62774000	USD
CY2014Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	813000	USD
CY2015Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	1700000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4882000	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	434000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4875000	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	7225000	USD
CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1710000	USD
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	6385000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2382000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1311000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1533000	USD
CY2014Q4	us-gaap	Customer Advances And Deposits Current CustomerAdvancesAndDepositsCurrent	25197000	USD
CY2015Q4	us-gaap	Customer Advances And Deposits Current CustomerAdvancesAndDepositsCurrent	27173000	USD
CY2013Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.0825
CY2015	us-gaap	Deferred Compensation Arrangement With Individual Requisite Service Period1 DeferredCompensationArrangementWithIndividualRequisiteServicePeriod1	P2Y
CY2014Q4	us-gaap	Deferred Compensation Equity DeferredCompensationEquity	-1258000	USD
CY2015Q4	us-gaap	Deferred Compensation Equity DeferredCompensationEquity	-1883000	USD
CY2014Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	251426000	USD
CY2015Q4	us-gaap	Deferred Credits And Other Liabilities DeferredCreditsAndOtherLiabilities	281515000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	14860000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	22235000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	20520000	USD
CY2014Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	161064000	USD
CY2015Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	192600000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2100000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2600000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2100000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	15211000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	15467000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	0	USD
CY2015Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	831000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1186000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	943000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	884000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3755000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4078000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	6532000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	6570000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	1150000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	1153000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	176275000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	208067000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	832000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	0	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	529000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	485000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	160232000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	193431000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4507000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	5961000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	152877000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	185448000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	28711000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-9235000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	1078000	USD
CY2015	us-gaap	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Loss Net Gain Loss Before Tax DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax	-26602000	USD
CY2015	us-gaap	Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	-755000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	268000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	10000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	335000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	13000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	54155000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	50959000	USD
CY2015	us-gaap	Defined Benefit Plan Future Amortization Of Prior Service Cost Credit DefinedBenefitPlanFutureAmortizationOfPriorServiceCostCredit	-77000	USD
CY2013	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3700000	USD
CY2014	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	4100000	USD
CY2015	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	4100000	USD
CY2015	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.06
CY2015	us-gaap	Defined Contribution Plan Employers Matching Contribution Annual Vesting Percentage DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage	1
CY2013	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	6100000	USD
CY2014	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	6600000	USD
CY2015	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	7000000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	23965000	USD
CY2014	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	26316000	USD
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	29972000	USD
CY2013Q2	us-gaap	Derivative Price Risk Option Strike Price DerivativePriceRiskOptionStrikePrice	0.975
CY2014Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	3939000	USD
CY2015Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	4390000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.27
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.22
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.35
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.48
CY2015Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.45
CY2015Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2015Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.73
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.26
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.21
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.35
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.47
CY2015Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.44
CY2015Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.41
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2015Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.72
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.4025
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.3988
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.3954
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2013	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	1119000	USD
CY2014	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	684000	USD
CY2015	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	1235000	USD
CY2014Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	10076000	USD
CY2015Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	10014000	USD
CY2015Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	1400000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	657000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	790000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	780000	USD
CY2014Q4	us-gaap	Energy Marketing Contract Liabilities Current EnergyMarketingContractLiabilitiesCurrent	1018000	USD
CY2015Q4	us-gaap	Energy Marketing Contract Liabilities Current EnergyMarketingContractLiabilitiesCurrent	433000	USD
CY2014Q4	us-gaap	Energy Marketing Contracts Assets Current EnergyMarketingContractsAssetsCurrent	1055000	USD
CY2015Q4	us-gaap	Energy Marketing Contracts Assets Current EnergyMarketingContractsAssetsCurrent	153000	USD
CY2014Q4	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	4258000	USD
CY2015Q4	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	3410000	USD
CY2014Q4	us-gaap	Energy Related Inventory Propane Gas EnergyRelatedInventoryPropaneGas	7250000	USD
CY2015Q4	us-gaap	Energy Related Inventory Propane Gas EnergyRelatedInventoryPropaneGas	6619000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	6000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	5000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	76000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	69000	USD
CY2014	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	253000	USD
CY2015	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	82000	USD
CY2013Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	458000	USD
CY2014Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	287000	USD
CY2015Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	279000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1962000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	2330000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	355000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	353000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	353000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	353000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	351000	USD
CY2014Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	4366000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	4552000	USD
CY2015Q4	us-gaap	Gain Contingency Unrecorded Amount GainContingencyUnrecordedAmount	750000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	854000	USD
CY2014	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	7293000	USD
CY2015	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	340000	USD
CY2013	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2014	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	7139000	USD
CY2015	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2014Q4	us-gaap	Goodwill Goodwill	4952000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	14548000	USD
CY2014Q4	us-gaap	Ground Leases Accumulated Amortization GroundLeasesAccumulatedAmortization	996000	USD
CY2015Q4	us-gaap	Ground Leases Accumulated Amortization GroundLeasesAccumulatedAmortization	2300000	USD
CY2015Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	45600000	USD
CY2013	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2014	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	6881000	USD
CY2015	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	54872000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	60037000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	68045000	USD
CY2013	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	-39000	USD
CY2014	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	-35000	USD
CY2015	us-gaap	Income Tax Credits And Adjustments IncomeTaxCreditsAndAdjustments	-23000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	22085000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23945000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26905000	USD
CY2013	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	256000	USD
CY2014	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	267000	USD
CY2015	us-gaap	Income Tax Rate Reconciliation Deductions Employee Stock Ownership Plan Dividends IncomeTaxRateReconciliationDeductionsEmployeeStockOwnershipPlanDividends	263000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	19205000	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	21121000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	23865000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	31000	USD
CY2014	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	145000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	241000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3105000	USD
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	2946000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3062000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4993000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	17588000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	11076000	USD
CY2014Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	18806000	USD
CY2015Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	24950000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	18824000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-8047000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-10897000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	21244000	USD
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-20683000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-17097000	USD
CY2013	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	-3362000	USD
CY2014	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	-927000	USD
CY2015	us-gaap	Increase Decrease In Customer Deposits IncreaseDecreaseInCustomerDeposits	1976000	USD
CY2013	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	837000	USD
CY2014	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	37000	USD
CY2015	us-gaap	Increase Decrease In Employee Related Liabilities IncreaseDecreaseInEmployeeRelatedLiabilities	-331000	USD
CY2013	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-2311000	USD
CY2014	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	15936000	USD
CY2015	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	4967000	USD
CY2013	us-gaap	Increase Decrease In Intangible Assets Current IncreaseDecreaseInIntangibleAssetsCurrent	0	USD
CY2014	us-gaap	Increase Decrease In Intangible Assets Current IncreaseDecreaseInIntangibleAssetsCurrent	-14000	USD
CY2015	us-gaap	Increase Decrease In Intangible Assets Current IncreaseDecreaseInIntangibleAssetsCurrent	0	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	4492000	USD
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-4177000	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1527000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-104000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-2944000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-3972000	USD
CY2013	us-gaap	Increase Decrease In Outstanding Checks Financing Activities IncreaseDecreaseInOutstandingChecksFinancingActivities	-1666000	USD
CY2014	us-gaap	Increase Decrease In Outstanding Checks Financing Activities IncreaseDecreaseInOutstandingChecksFinancingActivities	-921000	USD
CY2015	us-gaap	Increase Decrease In Outstanding Checks Financing Activities IncreaseDecreaseInOutstandingChecksFinancingActivities	2450000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1064000	USD
CY2014	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	699000	USD
CY2015	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	759000	USD
CY2013	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-2328000	USD
CY2014	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	11014000	USD
CY2015	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-3883000	USD
CY2013	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	74618	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
CY2013	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	37866	shares
CY2014	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	53636	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	48950	shares
CY2014Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2404000	USD
CY2015Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	2222000	USD
CY2013	us-gaap	Interest Expense InterestExpense	8234000	USD
CY2014	us-gaap	Interest Expense InterestExpense	9482000	USD
CY2015	us-gaap	Interest Expense InterestExpense	10006000	USD
CY2013	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	43000	USD
CY2014	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
CY2015	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
CY2013	us-gaap	Interest Paid InterestPaid	7837000	USD
CY2014	us-gaap	Interest Paid InterestPaid	8870000	USD
CY2015	us-gaap	Interest Paid InterestPaid	9497000	USD
CY2014Q4	us-gaap	Interest Payable Current InterestPayableCurrent	1352000	USD
CY2015Q4	us-gaap	Interest Payable Current InterestPayableCurrent	1311000	USD
CY2015	us-gaap	Inventory Write Down InventoryWriteDown	681000	USD
CY2014Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	3678000	USD
CY2015Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	3644000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	904469000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1068586000	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	194235000	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	279593000	USD
CY2014	us-gaap	Line Of Credit Facility Commitment Fee Amount LineOfCreditFacilityCommitmentFeeAmount	87000	USD
CY2015	us-gaap	Line Of Credit Facility Commitment Fee Amount LineOfCreditFacilityCommitmentFeeAmount	106010000	USD
CY2015Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	320000000	USD
CY2015Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	151243000	USD
CY2014Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	86040000	USD
CY2015Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	168757000	USD
CY2014Q4	us-gaap	Long Term Debt LongTermDebt	161500000	USD
CY2015Q4	us-gaap	Long Term Debt LongTermDebt	153700000	USD
CY2014Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	167595000	USD
CY2015Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	158491000	USD
CY2014Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	9109000	USD
CY2015Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	9151000	USD
CY2014Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	9109000	USD
CY2015Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	9151000	USD
CY2014Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	180700000	USD
CY2015Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	165100000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	101000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	9151000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	15600000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	11245000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	9421000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	12099000	USD
CY2014Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	158486000	USD
CY2015Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	149340000	USD
CY2013	us-gaap	Maintenance Costs MaintenanceCosts	7509000	USD
CY2014	us-gaap	Maintenance Costs MaintenanceCosts	9706000	USD
CY2015	us-gaap	Maintenance Costs MaintenanceCosts	11803000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	41845000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	8520000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	58697000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-114781000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-86586000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-165558000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	72931000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	79284000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	105142000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	32787000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	17681000	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	5134000	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	3180000	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	10097000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	36092000	USD
CY2015Q1	us-gaap	Net Income Loss NetIncomeLoss	21109000	USD
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	6294000	USD
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	5119000	USD
CY2015Q4	us-gaap	Net Income Loss NetIncomeLoss	8619000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	41140000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	32830000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	36092000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	41140000	USD
CY2013	us-gaap	Operating Expenses OperatingExpenses	381572000	USD
CY2014	us-gaap	Operating Expenses OperatingExpenses	436555000	USD
CY2015	us-gaap	Operating Expenses OperatingExpenses	381486000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	62734000	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	31623000	USD
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	10457000	USD
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	7792000	USD
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	12408000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	62279000	USD
CY2015Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	37508000	USD
CY2015Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	13170000	USD
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	10909000	USD
CY2015Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	16171000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	77758000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	5300000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	1300000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	273000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	424000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	484000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	649000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	2200000	USD
CY2015	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	264000	USD
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1600000	USD
CY2014	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1800000	USD
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	1700000	USD
CY2014Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	6603000	USD
CY2015Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	7059000	USD
CY2014Q4	us-gaap	Other Assets Current OtherAssetsCurrent	195000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1044000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-36000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-34000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-40000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-24000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-24000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-27000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-3724000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-636000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-3143000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-164000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2529000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3143000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-164000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	25847000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-2565000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	3076000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-103000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-1673000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	1997000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-73000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-33000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-227000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-22000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-150000	USD
CY2014Q4	us-gaap	Other Inventory OtherInventory	3699000	USD
CY2015Q4	us-gaap	Other Inventory OtherInventory	3803000	USD
CY2014Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	3825000	USD
CY2015Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2597000	USD
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	28000	USD
CY2014	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-3000	USD
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-47000	USD
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	372000	USD
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	101000	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	293000	USD
CY2015	us-gaap	Other Restrictions On Payment Of Dividends OtherRestrictionsOnPaymentOfDividends	10.0
CY2013	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	12946000	USD
CY2014	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	13431000	USD
CY2015	us-gaap	Other Sales Revenue Net OtherSalesRevenueNet	-4766000	USD
CY2013	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	-41000	USD
CY2014	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	233000	USD
CY2015	us-gaap	Payments For Environmental Liabilities PaymentsForEnvironmentalLiabilities	174000	USD
CY2013	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	-2300000	USD
CY2014	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	0	USD
CY2015	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	0	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	13081000	USD
CY2014	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	13887000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	15924000	USD
CY2013	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	8000	USD
CY2014	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	-165000	USD
CY2015	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	813000	USD
CY2013	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	199000	USD
CY2014	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	10797000	USD
CY2014	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-581000	USD
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-472000	USD
CY2013	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	264637000	USD
CY2014	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	300442000	USD
CY2015	us-gaap	Regulated Operating Revenue RegulatedOperatingRevenue	301902000	USD
CY2014Q4	us-gaap	Regulatory Assets RegulatoryAssets	87103000	USD
CY2015Q4	us-gaap	Regulatory Assets RegulatoryAssets	85787000	USD
CY2014	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2014Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	8967000	USD
CY2015Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	8268000	USD
CY2014Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	78136000	USD
CY2015Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	77519000	USD
CY2014Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	46687000	USD
CY2015	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
CY2013	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	20201000	USD
CY2014	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	0	USD
CY2015	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	20930000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	97120000	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	97164000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	144618000	USD
CY2014Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	35027000	USD
CY2015Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	33481000	USD
CY2014Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	6652000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	689762000	USD
CY2015	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	164000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	870125000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1007489000	USD
CY2015Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	7146000	USD
CY2013	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	26766000	USD
CY2014	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	49975000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2013	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	46133000	USD
CY2014	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-16513000	USD
CY2015	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	82178000	USD
CY2013	us-gaap	Proceeds From Repurchase Of Equity ProceedsFromRepurchaseOfEquity	-1342000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	854950000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	18497000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	18999000	USD
CY2014Q4	us-gaap	Property Subject To Or Available For Operating Lease Accumulated Depreciation PropertySubjectToOrAvailableForOperatingLeaseAccumulatedDepreciation	435000	USD
CY2015Q4	us-gaap	Property Subject To Or Available For Operating Lease Accumulated Depreciation PropertySubjectToOrAvailableForOperatingLeaseAccumulatedDepreciation	507000	USD
CY2015Q4	us-gaap	Property Subject To Or Available For Operating Lease Gross PropertySubjectToOrAvailableForOperatingLeaseGross	1400000	USD
CY2013	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	131000	USD
CY2014	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	58000	USD
CY2015	us-gaap	Public Utilities Allowance For Funds Used During Construction Capitalized Interest PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest	38000	USD
CY2014Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	766855000	USD
CY2015Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	842756000	USD
CY2015Q4	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	100800000	USD
CY2015Q4	us-gaap	Purchase Obligation Due In Fourth And Fifth Year PurchaseObligationDueInFourthAndFifthYear	64400000	USD
CY2015Q4	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	72300000	USD
CY2015Q4	us-gaap	Purchase Obligation Due In Second And Third Year PurchaseObligationDueInSecondAndThirdYear	96800000	USD
CY2015Q4	us-gaap	Ratio Of Indebtedness To Net Capital1 RatioOfIndebtednessToNetCapital1	0.65
CY2015Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	50429000	USD
CY2014Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	3268000	USD
CY2015Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	7365000	USD
CY2014Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	43419000	USD
CY2015Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	43064000	USD
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	14957000	USD
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	9969000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	10820000	USD
CY2015Q4	us-gaap	Restricted Investments Percent Of Net Assets RestrictedInvestmentsPercentOfNetAssets	0.13
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	142317000	USD
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	166235000	USD
CY2013	us-gaap	Revenues Revenues	444306000	USD
CY2014Q1	us-gaap	Revenues Revenues	186337000	USD
CY2014Q2	us-gaap	Revenues Revenues	100497000	USD
CY2014Q3	us-gaap	Revenues Revenues	91619000	USD
CY2014Q4	us-gaap	Revenues Revenues	120380000	USD
CY2014	us-gaap	Revenues Revenues	498834000	USD
CY2015Q1	us-gaap	Revenues Revenues	170081000	USD
CY2015Q2	us-gaap	Revenues Revenues	92682000	USD
CY2015Q3	us-gaap	Revenues Revenues	91913000	USD
CY2015Q4	us-gaap	Revenues Revenues	104567000	USD
CY2015	us-gaap	Revenues Revenues	459244000	USD
CY2014Q4	us-gaap	Sales And Excise Tax Payable Current And Noncurrent SalesAndExciseTaxPayableCurrentAndNoncurrent	724000	USD
CY2015Q4	us-gaap	Sales And Excise Tax Payable Current And Noncurrent SalesAndExciseTaxPayableCurrentAndNoncurrent	310000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	1631000	USD
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	1958000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	1937000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1207	shares
CY2014Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	88231000	USD
CY2015Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	173397000	USD
CY2014Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0115
CY2015Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0130
CY2015	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	30165000	USD
CY2013	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	295000	USD
CY2014	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	535000	USD
CY2015	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	0	USD
CY2015	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2235000	USD
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1322000	USD
CY2014	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1889000	USD
CY2015	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	1662000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	256598000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	278773000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	300322000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	358138000	USD
CY2013	us-gaap	Taxes Other TaxesOther	13811000	USD
CY2014	us-gaap	Taxes Other TaxesOther	13339000	USD
CY2015	us-gaap	Taxes Other TaxesOther	13607000	USD
CY2013	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	489000	USD
CY2014	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	237000	USD
CY2015	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	7000	USD
CY2014Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1258000	USD
CY2015Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1883000	USD
CY2015Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	358000	USD
CY2013	us-gaap	Unrealized Gain Loss On Commodity Contracts UnrealizedGainLossOnCommodityContracts	706000	USD
CY2014	us-gaap	Unrealized Gain Loss On Commodity Contracts UnrealizedGainLossOnCommodityContracts	-501000	USD
CY2015	us-gaap	Unrealized Gain Loss On Commodity Contracts UnrealizedGainLossOnCommodityContracts	-96000	USD
CY2013	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1313000	USD
CY2014	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1084000	USD
CY2015	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	474000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	300000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	100000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	50000	USD
CY2013	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	166723000	USD
CY2014	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	184961000	USD
CY2015	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	162108000	USD
CY2012Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	826000	USD
CY2013Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1635000	USD
CY2014Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1120000	USD
CY2015Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	909000	USD
CY2013	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	1796000	USD
CY2014	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	1073000	USD
CY2015	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	979000	USD
CY2013	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	249000	USD
CY2014	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	85000	USD
CY2015	us-gaap	Valuation Allowances And Reserves Charged To Other Accounts ValuationAllowancesAndReservesChargedToOtherAccounts	246000	USD
CY2013	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	1236000	USD
CY2014	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	1673000	USD
CY2015	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	1436000	USD
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	14543446	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	14604944	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	15143373	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	14430962	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	14551308	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15094423	shares
CY2015	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:18px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-top:6px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with GAAP requires management to make estimates in measuring assets and liabilities and related revenues and expenses. These estimates involve judgments with respect to, among other things, various future economic factors that are difficult to predict and are beyond our control; therefore, actual results could differ from these estimates.</font></div></div>

Files In Submission

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$CPK
CHESAPEAKE UTILITIES CORP Stock $cpk

2015 Q4 Form 10-K Financial Statement

#000162828016011868 Filed on February 29, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CPK CHESAPEAKE UTILITIES CORP Stock $cpk

2015 Q4 Form 10-K Financial Statement

#000162828016011868 Filed on February 29, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CPK
CHESAPEAKE UTILITIES CORP Stock $cpk