$RGCO
RGC RESOURCES INC Stock $rgco

$rgco Overview Financials Valuation SEC Filings Company Website

2014 Q3 Form 10-K Financial Statement

#000119312515399923 Filed on December 10, 2015

Income Statement

Concept	2014 Q3	2014 Q2	2014 Q1
Revenue	$10.28M	$12.02M	$32.70M
YoY Change	11.18%	8.95%	35.26%
Cost Of Revenue	$5.030M	$6.300M	$22.54M
YoY Change	14.58%	8.43%	54.49%
Gross Profit	$5.251M	$5.722M	$10.16M
YoY Change	8.24%	9.42%	6.0%
Gross Profit Margin	51.08%	47.58%	31.07%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.100M	$1.250M	$1.240M
YoY Change	-5.98%	7.76%	5.98%
% of Gross Profit	20.95%	21.85%	12.2%
Operating Expenses	$4.900M	$4.780M	$5.040M
YoY Change	9.62%	4.37%	5.66%
Operating Profit	$347.5K	$940.7K	$5.121M
YoY Change	-9.92%	45.66%	6.39%
Interest Expense	-$450.0K	$456.8K	$455.7K
YoY Change	-2.17%	0.14%	0.18%
% of Operating Profit	-129.49%	48.56%	8.9%
Other Income/Expense, Net	-$110.0K	-$22.04K	-$45.76K
YoY Change	83.33%	89.02%	7857.57%
Pretax Income	-$220.0K	$461.9K	$4.620M
YoY Change	57.14%	159.41%	6.0%
Income Tax	-$70.00K	$178.7K	$1.773M
% Of Pretax Income		38.69%	38.38%
Net Earnings	-$144.3K	$283.2K	$2.847M
YoY Change	43.03%	157.21%	5.49%
Net Earnings / Revenue	-1.4%	2.36%	8.71%
Basic Earnings Per Share	-$0.03	$0.06	$0.60
Diluted Earnings Per Share	-$0.03	$0.06	$0.60
COMMON SHARES
Basic Shares Outstanding	4.719M shares	4.718M shares	4.714M shares
Diluted Shares Outstanding		4.719M shares	4.714M shares

Balance Sheet

Concept	2014 Q3	2014 Q2	2014 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$800.0K	$2.000M	$3.800M
YoY Change	-71.43%	-81.48%	-68.85%
Cash & Equivalents	$849.8K	$1.971M	$3.771M
Short-Term Investments
Other Short-Term Assets	$1.105M	$1.053M	$1.383M
YoY Change	27.46%	22.95%	-76.16%
Inventory	$12.30M	$7.500M	$2.800M
Prepaid Expenses
Receivables	$3.730M	$3.624M	$12.79M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$21.01M	$16.84M	$24.08M
YoY Change	-5.39%	-38.93%	-29.58%
LONG-TERM ASSETS
Property, Plant & Equipment	$108.7M	$105.4M	$102.8M
YoY Change	11.26%	10.83%	10.06%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$100.1K	$157.4K	$71.17K
YoY Change	-7.36%	106.67%	-99.17%
Total Long-Term Assets	$9.373M	$4.581M	$4.511M
YoY Change	104.57%	-46.65%	-95.58%
TOTAL ASSETS
Total Short-Term Assets	$21.01M	$16.84M	$24.08M
Total Long-Term Assets	$9.373M	$4.581M	$4.511M
Total Assets	$139.1M	$126.9M	$131.4M
YoY Change	11.73%	-3.35%	-3.56%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$5.367M	$5.023M	$6.879M
YoY Change	-6.22%	-21.1%	-11.81%
Accrued Expenses	$2.201M	$1.816M	$2.948M
YoY Change	3.9%	8.99%	22.83%
Deferred Revenue
YoY Change
Short-Term Debt	$9.000M	$0.00	$15.00M
YoY Change	-40.0%	-100.0%	0.0%
Long-Term Debt Due	$0.00		$1.600M
YoY Change
Total Short-Term Liabilities	$20.35M	$12.80M	$33.88M
YoY Change	-30.91%	-58.76%	-6.42%
LONG-TERM LIABILITIES
Long-Term Debt	$30.50M	$28.00M	$11.40M
YoY Change	134.62%	115.38%	-12.31%
Other Long-Term Liabilities	$21.80M	$18.90M	$18.70M
YoY Change	19.13%	-23.79%	-24.6%
Total Long-Term Liabilities	$36.45M	$33.64M	$33.36M
YoY Change	11.91%	-11.57%	-11.73%
TOTAL LIABILITIES
Total Short-Term Liabilities	$20.35M	$12.80M	$33.88M
Total Long-Term Liabilities	$36.45M	$33.64M	$33.36M
Total Liabilities	$56.80M	$46.44M	$67.24M
YoY Change	-8.42%	-32.77%	-22.44%
SHAREHOLDERS EQUITY
Retained Earnings	$21.32M	$22.34M	$22.93M
YoY Change	6.06%	6.11%
Common Stock	$31.84M	$31.80M	$31.75M
YoY Change	0.92%	1.06%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$52.02M	$52.41M	$52.80M
YoY Change
Total Liabilities & Shareholders Equity	$139.1M	$126.9M	$131.4M
YoY Change	11.73%	-3.35%	-3.56%

Cashflow Statement

Concept	2014 Q3	2014 Q2	2014 Q1
OPERATING ACTIVITIES
Net Income	-$144.3K	$283.2K	$2.847M
YoY Change	43.03%	157.21%	5.49%
Depreciation, Depletion And Amortization	$1.100M	$1.250M	$1.240M
YoY Change	-5.98%	7.76%	5.98%
Cash From Operating Activities	-$5.470M	$2.620M	$10.96M
YoY Change	34.07%	47.19%	-24.52%
INVESTING ACTIVITIES
Capital Expenditures	-$3.940M	-$3.580M	-$3.120M
YoY Change	27.1%	46.72%	60.0%
Acquisitions
YoY Change
Other Investing Activities	$10.00K	$0.00	$10.00K
YoY Change	0.0%	-100.0%
Cash From Investing Activities	-$3.930M	-$3.570M	-$3.120M
YoY Change	27.6%	46.91%	60.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	8.270M	-840.0K	-4.570M
YoY Change	-1188.16%	10.53%	361.62%
NET CHANGE
Cash From Operating Activities	-5.470M	2.620M	10.96M
Cash From Investing Activities	-3.930M	-3.570M	-3.120M
Cash From Financing Activities	8.270M	-840.0K	-4.570M
Net Change In Cash	-1.130M	-1.790M	3.270M
YoY Change	-85.73%	26.95%	-71.76%
FREE CASH FLOW
Cash From Operating Activities	-$5.470M	$2.620M	$10.96M
Capital Expenditures	-$3.940M	-$3.580M	-$3.120M
Free Cash Flow	-$1.530M	$6.200M	$14.08M
YoY Change	56.12%	46.92%	-14.51%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-09-30
CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0001069533
CY2015Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	4750645	shares
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2015Q1	dei	Entity Public Float EntityPublicFloat	89254811	USD
CY2015	dei	Entity Registrant Name EntityRegistrantName	RGC RESOURCES INC
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2013	rgco	Accounts Payable Customer Credits And Accrued Expenses Net AccountsPayableCustomerCreditsAndAccruedExpensesNet	-739154	USD
CY2014	rgco	Accounts Payable Customer Credits And Accrued Expenses Net AccountsPayableCustomerCreditsAndAccruedExpensesNet	-505006	USD
CY2015	rgco	Accounts Payable Customer Credits And Accrued Expenses Net AccountsPayableCustomerCreditsAndAccruedExpensesNet	-873354	USD
CY2014Q3	rgco	Accrual Of Estimated Revenues For Natural Gas Delivered To Customers But Not Billed During Period AccrualOfEstimatedRevenuesForNaturalGasDeliveredToCustomersButNotBilledDuringPeriod	1071128	USD
CY2015Q3	rgco	Accrual Of Estimated Revenues For Natural Gas Delivered To Customers But Not Billed During Period AccrualOfEstimatedRevenuesForNaturalGasDeliveredToCustomersButNotBilledDuringPeriod	1001418	USD
CY2014Q2	rgco	Approvedlongtermindebtednessauthority Approvedlongtermindebtednessauthority	60000000	USD
CY2014Q2	rgco	Approvedshorttermindebtednessauthority Approvedshorttermindebtednessauthority	30000000	USD
CY2013	rgco	Cost Of Plant Retirement CostOfPlantRetirement	502587	USD
CY2014	rgco	Cost Of Plant Retirement CostOfPlantRetirement	452834	USD
CY2015	rgco	Cost Of Plant Retirement CostOfPlantRetirement	406731	USD
CY2013	rgco	Cost Of Sales CostOfSales	35602775	USD
CY2014	rgco	Cost Of Sales CostOfSales	45679045	USD
CY2015	rgco	Cost Of Sales CostOfSales	37983174	USD
CY2015	rgco	Deferred Charges Amortization Period DeferredChargesAmortizationPeriod	P12M
CY2014Q3	rgco	Deferred Tax Assets Accrued Gas Costs DeferredTaxAssetsAccruedGasCosts	36305	USD
CY2015Q3	rgco	Deferred Tax Assets Accrued Gas Costs DeferredTaxAssetsAccruedGasCosts	0	USD
CY2014Q3	rgco	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	2077409	USD
CY2015Q3	rgco	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	2502774	USD
CY2014Q3	rgco	Deferred Tax Assets Tax Deferred Expense Costs Of Gas Held In Storage DeferredTaxAssetsTaxDeferredExpenseCostsOfGasHeldInStorage	973651	USD
CY2015Q3	rgco	Deferred Tax Assets Tax Deferred Expense Costs Of Gas Held In Storage DeferredTaxAssetsTaxDeferredExpenseCostsOfGasHeldInStorage	930524	USD
CY2014Q3	rgco	Deferred Tax Liabilites Accrued Gas Costs DeferredTaxLiabilitesAccruedGasCosts	0	USD
CY2015Q3	rgco	Energy Purchase Obligation Due In Next Twelve Months EnergyPurchaseObligationDueInNextTwelveMonths	2071061	MMBTU
CY2015Q3	rgco	Energy Purchase Obligation Due In Second Year EnergyPurchaseObligationDueInSecondYear	295866	MMBTU
CY2015Q3	rgco	Energy Purchase Obligation Due Total EnergyPurchaseObligationDueTotal	2366927	MMBTU
CY2015Q3	rgco	Deferred Tax Liabilites Accrued Gas Costs DeferredTaxLiabilitesAccruedGasCosts	157385	USD
CY2015	rgco	Defined Benefit Plan Amortization Of Net Gains Losses Regulatory Deferral DefinedBenefitPlanAmortizationOfNetGainsLossesRegulatoryDeferral	531000	USD
	rgco	Defined Benefit Plan Transition Obligation Asset Amortization Period DefinedBenefitPlanTransitionObligationAssetAmortizationPeriod	P20Y
CY2015	rgco	Defined Contribution Plan Maximum Employee Contribution Percent DefinedContributionPlanMaximumEmployeeContributionPercent	0.5
CY2015	rgco	Defined Contribution Plan Minimum Employee Contribution Percent DefinedContributionPlanMinimumEmployeeContributionPercent	0.01
CY2014	rgco	Effect Of Changein Deprecation Rateon Depreciation Expense EffectOfChangeinDeprecationRateonDepreciationExpense	-126875	USD
CY2014	rgco	Effect Of Changein Depreciation Rateon Net Income EffectOfChangeinDepreciationRateonNetIncome	78713	USD
CY2014	rgco	Effectof Changein Deprecation Rateon Eps EffectofChangeinDeprecationRateonEPS	0.02
CY2015	rgco	Federal Bonus Depreciation Rate FederalBonusDepreciationRate	0.50
CY2013	rgco	Increase Decrease In Accounts Receivable Net Of Customer Deposits IncreaseDecreaseInAccountsReceivableNetOfCustomerDeposits	374682	USD
CY2014	rgco	Increase Decrease In Accounts Receivable Net Of Customer Deposits IncreaseDecreaseInAccountsReceivableNetOfCustomerDeposits	-12424	USD
CY2015	rgco	Increase Decrease In Accounts Receivable Net Of Customer Deposits IncreaseDecreaseInAccountsReceivableNetOfCustomerDeposits	-638917	USD
CY2015	rgco	Loc Debt Covenant Minimum Required Interest Coverage Ratio Upper Range LOCDebtCovenantMinimumRequiredInterestCoverageRatioUpperRange	1.5
CY2013	rgco	Lineof Credit Facility Amount Outstanding Average Daily Balance LineofCreditFacilityAmountOutstandingAverageDailyBalance	80593	USD
CY2014	rgco	Lineof Credit Facility Amount Outstanding Average Daily Balance LineofCreditFacilityAmountOutstandingAverageDailyBalance	1340833	USD
CY2015	rgco	Lineof Credit Facility Amount Outstanding Average Daily Balance LineofCreditFacilityAmountOutstandingAverageDailyBalance	6377040	USD
CY2013Q3	rgco	Lineof Credit Facility Highest Month End Amount Outstanding LineofCreditFacilityHighestMonthEndAmountOutstanding	1414955	USD
CY2014Q3	rgco	Lineof Credit Facility Highest Month End Amount Outstanding LineofCreditFacilityHighestMonthEndAmountOutstanding	9045050	USD
CY2015Q3	rgco	Lineof Credit Facility Highest Month End Amount Outstanding LineofCreditFacilityHighestMonthEndAmountOutstanding	17366052	USD
CY2014Q3	rgco	Longtermdebtnetunamortizeddebtissuancecosts Longtermdebtnetunamortizeddebtissuancecosts	30306919	USD
CY2015Q3	rgco	Longtermdebtnetunamortizeddebtissuancecosts Longtermdebtnetunamortizeddebtissuancecosts	30316573	USD
CY2015	rgco	Maximum Percentage Of Accounts Receivable From Single Customer MaximumPercentageOfAccountsReceivableFromSingleCustomer	0.05
CY2014Q3	rgco	Natural Gas Purchases Fair Value Disclosure NaturalGasPurchasesFairValueDisclosure	795019	USD
CY2015Q3	rgco	Natural Gas Purchases Fair Value Disclosure NaturalGasPurchasesFairValueDisclosure	712710	USD
CY2015Q3	rgco	Number Of Customers NumberOfCustomers	59100	customer
CY2015	rgco	Number Of Pipelines NumberOfPipelines	2	pipeline
CY2013	rgco	Other Comprehensive Income Amortizationof Defined Benefit Plan Recognizedin Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationofDefinedBenefitPlanRecognizedinNetPeriodicPensionCostTax	-83558	USD
CY2014	rgco	Other Comprehensive Income Amortizationof Defined Benefit Plan Recognizedin Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationofDefinedBenefitPlanRecognizedinNetPeriodicPensionCostTax	-15901	USD
CY2015	rgco	Other Comprehensive Income Amortizationof Defined Benefit Plan Recognizedin Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationofDefinedBenefitPlanRecognizedinNetPeriodicPensionCostTax	-22884	USD
CY2013	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicBenefitCostBeforeTax	-219890	USD
CY2014	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicBenefitCostBeforeTax	-41846	USD
CY2015	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicBenefitCostBeforeTax	-60221	USD
CY2013	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicPensionCostNetOfTax	-136332	USD
CY2014	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicPensionCostNetOfTax	-25945	USD
CY2015	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicPensionCostNetOfTax	-37337	USD
CY2013	rgco	Other Comprehensive Income Loss Defined Benefit Plan Balance Sheet Net Gains Losses Net Of Tax OtherComprehensiveIncomeLossDefinedBenefitPlanBalanceSheetNetGainsLossesNetOfTax	-1063231	USD
CY2014	rgco	Other Comprehensive Income Loss Defined Benefit Plan Balance Sheet Net Gains Losses Net Of Tax OtherComprehensiveIncomeLossDefinedBenefitPlanBalanceSheetNetGainsLossesNetOfTax	246583	USD
CY2015	rgco	Other Comprehensive Income Loss Defined Benefit Plan Balance Sheet Net Gains Losses Net Of Tax OtherComprehensiveIncomeLossDefinedBenefitPlanBalanceSheetNetGainsLossesNetOfTax	1184556	USD
CY2013	rgco	Other Comprehensive Income Loss Defined Benefit Plan Balance Sheet Net Gains Losses Tax OtherComprehensiveIncomeLossDefinedBenefitPlanBalanceSheetNetGainsLossesTax	-651659	USD
CY2014	rgco	Other Comprehensive Income Loss Defined Benefit Plan Balance Sheet Net Gains Losses Tax OtherComprehensiveIncomeLossDefinedBenefitPlanBalanceSheetNetGainsLossesTax	151131	USD
CY2015	rgco	Other Comprehensive Income Loss Defined Benefit Plan Balance Sheet Net Gains Losses Tax OtherComprehensiveIncomeLossDefinedBenefitPlanBalanceSheetNetGainsLossesTax	726017	USD
CY2014	rgco	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives To Regulatory Asset Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesToRegulatoryAssetNetOfTax	-694372	USD
CY2014	rgco	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives To Regulatory Asset Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesToRegulatoryAssetTax	-424861	USD
CY2014	rgco	Other Comprehensive Income Loss Reclassification Adjustment From Aoci To Regulatory Asset On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIToRegulatoryAssetOnDerivativesBeforeTax	-1119233	USD
CY2013	rgco	Other Comprehensive Income Lossdefinedbenefitplanbalancesheetnetgainslossesbeforetax OtherComprehensiveIncomeLossdefinedbenefitplanbalancesheetnetgainslossesbeforetax	-1714890	USD
CY2014	rgco	Other Comprehensive Income Lossdefinedbenefitplanbalancesheetnetgainslossesbeforetax OtherComprehensiveIncomeLossdefinedbenefitplanbalancesheetnetgainslossesbeforetax	397714	USD
CY2015	rgco	Other Comprehensive Income Lossdefinedbenefitplanbalancesheetnetgainslossesbeforetax OtherComprehensiveIncomeLossdefinedbenefitplanbalancesheetnetgainslossesbeforetax	1910573	USD
CY2014Q3	rgco	Public Utilities Property Plant And Equipment In Service Net PublicUtilitiesPropertyPlantAndEquipmentInServiceNet	104714558	USD
CY2015Q3	rgco	Public Utilities Property Plant And Equipment In Service Net PublicUtilitiesPropertyPlantAndEquipmentInServiceNet	114725953	USD
CY2014Q3	rgco	Public Utilities Property Plant And Equipment Liquefied Natural Gas PublicUtilitiesPropertyPlantAndEquipmentLiquefiedNaturalGas	9163158	USD
CY2015Q3	rgco	Public Utilities Property Plant And Equipment Liquefied Natural Gas PublicUtilitiesPropertyPlantAndEquipmentLiquefiedNaturalGas	12501179	USD
CY2015	rgco	Public Utility Franchise Expiration Date PublicUtilityFranchiseExpirationDate	2016-01-01
CY2015	rgco	Reclassification Between Currentand Deferred Income Taxes ReclassificationBetweenCurrentandDeferredIncomeTaxes	1442211	USD
CY2014Q3	rgco	Regulatory Cost Of Retirement Obligations RegulatoryCostOfRetirementObligations	8575147	USD
CY2015Q3	rgco	Regulatory Cost Of Retirement Obligations RegulatoryCostOfRetirementObligations	8885486	USD
CY2015	rgco	Regulatory Utility Assets Provision Period RegulatoryUtilityAssetsProvisionPeriod	P5Y
CY2015	rgco	Unamortized Losson Early Retirementof Debt Amortization Period UnamortizedLossonEarlyRetirementofDebtAmortizationPeriod	P20Y
CY2014Q3	rgco	Unamortizedlossonearlyretirementofdebtdeferredasregulatoryasset Unamortizedlossonearlyretirementofdebtdeferredasregulatoryasset	2283744	USD
CY2015Q3	rgco	Unamortizedlossonearlyretirementofdebtdeferredasregulatoryasset Unamortizedlossonearlyretirementofdebtdeferredasregulatoryasset	2169556	USD
CY2013	rgco	Unregulated Cost Of Sales UnregulatedCostOfSales	686713	USD
CY2014	rgco	Unregulated Cost Of Sales UnregulatedCostOfSales	587771	USD
CY2015	rgco	Unregulated Cost Of Sales UnregulatedCostOfSales	545859	USD
CY2014Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	5367299	USD
CY2015Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	5141677	USD
CY2014Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	3730173	USD
CY2015Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	3196573	USD
CY2014Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	2200882	USD
CY2015Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	2766097	USD
CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-1809531	USD
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CY2014Q3	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	0	USD
CY2015Q3	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	0	USD
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CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3950085	USD
CY2013Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2151234	USD
CY2014Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1139326	USD
CY2015Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2286545	USD
CY2014Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	8237228	USD
CY2015Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	8647669	USD
CY2013	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	5775018	USD
CY2014	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	2131298	USD
CY2015	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	11666412	USD
CY2012Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	65219	USD
CY2013Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	68539	USD
CY2014Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	70747	USD
CY2015Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	52721	USD
CY2015Q3	us-gaap	Purchase Obligation PurchaseObligation	37779427	USD
CY2013	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	122432	USD
CY2014	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	136369	USD
CY2015	us-gaap	Allowance For Doubtful Accounts Receivable Recoveries AllowanceForDoubtfulAccountsReceivableRecoveries	139282	USD
CY2013	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	204145	USD
CY2014	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	283042	USD
CY2015	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	245216	USD
CY2013	us-gaap	Asset Management Costs AssetManagementCosts	35348000	USD
CY2014	us-gaap	Asset Management Costs AssetManagementCosts	44884000	USD
CY2015	us-gaap	Asset Management Costs AssetManagementCosts	33405000	USD
CY2013Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4525355	USD
CY2014Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4802015	USD
CY2015Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	5295868	USD
CY2014	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	258763	USD
CY2015	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	281762	USD
CY2014	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	74276	USD
CY2015	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	62890	USD
CY2014	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	165845	USD
CY2015	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	162072	USD
CY2014	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	109466	USD
CY2015	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	311273	USD
CY2014Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	4802015	USD
CY2015Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	5295868	USD
CY2014Q3	us-gaap	Assets Assets	139127641	USD
CY2015Q3	us-gaap	Assets Assets	148140730	USD
CY2014Q3	us-gaap	Assets Current AssetsCurrent	21010617	USD
CY2015Q3	us-gaap	Assets Current AssetsCurrent	18443358	USD
CY2014Q3	us-gaap	Assets Noncurrent AssetsNoncurrent	9373447	USD
CY2015Q3	us-gaap	Assets Noncurrent AssetsNoncurrent	11067820	USD
CY2012Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8909871	USD
CY2013Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2846224	USD
CY2014Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	849757	USD
CY2015Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	985234	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-6063647	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1996467	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	135477	USD
CY2014Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.72
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.74
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.77
CY2014Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2015Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2014Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000	shares
CY2015Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000	shares
CY2014Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	4720378	shares
CY2015Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	4741498	shares
CY2014Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	4720378	shares
CY2015Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	4741498	shares
CY2014Q3	us-gaap	Common Stock Value CommonStockValue	23601890	USD
CY2015Q3	us-gaap	Common Stock Value CommonStockValue	23707490	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	6060903	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5720348	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3947196	USD
CY2015	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.05
CY2013	us-gaap	Cost Of Natural Gas Purchases CostOfNaturalGasPurchases	34916062	USD
CY2014	us-gaap	Cost Of Natural Gas Purchases CostOfNaturalGasPurchases	45091274	USD
CY2015	us-gaap	Cost Of Natural Gas Purchases CostOfNaturalGasPurchases	37437315	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1404450	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1789294	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	379180	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1857797	USD
CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2079752	USD
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	753721	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	453347	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	290458	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	374541	USD
CY2014Q3	us-gaap	Customer Advances Current CustomerAdvancesCurrent	1373927	USD
CY2015Q3	us-gaap	Customer Advances Current CustomerAdvancesCurrent	1560351	USD
CY2014Q3	us-gaap	Customer Deposits Current CustomerDepositsCurrent	1492150	USD
CY2015Q3	us-gaap	Customer Deposits Current CustomerDepositsCurrent	1579441	USD
CY2015	us-gaap	Debt Instrument Term DebtInstrumentTerm	P20Y
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	829080	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	687417	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2289729	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	796029	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	862881	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2416841	USD
CY2014Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	17126490	USD
CY2015Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	19962247	USD
CY2013	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	786990	USD
CY2014	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	859788	USD
CY2015	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	2416841	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-33051	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	175464	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	127112	USD
CY2014Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	4220167	USD
CY2015Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	5342216	USD
CY2014Q3	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	1704320	USD
CY2015Q3	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	2293536	USD
CY2014Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	295654	USD
CY2015Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	265951	USD
CY2014Q3	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	0	USD
CY2015Q3	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	0	USD
CY2015Q3	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	721782	USD
CY2014Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	230842	USD
CY2015Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	249837	USD
CY2014Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	579451	USD
CY2015Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	651336	USD
CY2014Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	26855	USD
CY2015Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	20012	USD
CY2014Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	12906323	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	14620031	USD
CY2014Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	14610643	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	16913567	USD
CY2014Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	17057847	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	19804862	USD
CY2014Q3	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	68643	USD
CY2015Q3	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	0	USD
CY2015	us-gaap	Defined Benefit Plan Amount To Be Amortized From Accumulated Other Comprehensive Income Loss Next Fiscal Year DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossNextFiscalYear	221000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	1938000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	109000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	2383000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	137000	USD
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	306382	USD
CY2014	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	330241	USD
CY2015	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	338896	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	4656716	USD
CY2014	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	4838062	USD
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	5219893	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	8063327	USD
CY2014	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	3490624	USD
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	3643093	USD
CY2014Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	873326	USD
CY2015Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	912995	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.91
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.03
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2015Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2015Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.08
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.01
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.08
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.91
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.60
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2014Q1	us-gaap	Gross Profit GrossProfit	10161125	USD
CY2014Q2	us-gaap	Gross Profit GrossProfit	5721551	USD
CY2014Q3	us-gaap	Gross Profit GrossProfit	5251421	USD
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.03
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.41
CY2015Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2015Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.07
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.01
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
CY2013	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	0	USD
CY2014	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	0	USD
CY2015	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	49366	USD
CY2014Q3	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	11402990	USD
CY2015Q3	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	8160498	USD
CY2013	us-gaap	Gross Profit GrossProfit	27602891	USD
CY2013Q4	us-gaap	Gross Profit GrossProfit	8202992	USD
CY2014	us-gaap	Gross Profit GrossProfit	29337089	USD
CY2014Q4	us-gaap	Gross Profit GrossProfit	8622143	USD
CY2015Q1	us-gaap	Gross Profit GrossProfit	10213770	USD
CY2015Q2	us-gaap	Gross Profit GrossProfit	5961828	USD
CY2015Q3	us-gaap	Gross Profit GrossProfit	5408692	USD
CY2015	us-gaap	Gross Profit GrossProfit	30206433	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	6906839	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	7647980	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	8264977	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2644787	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2939540	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3170562	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2348325	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2600313	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2810092	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	28106	USD
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	34811	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	29379	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	277395	USD
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	307509	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	331091	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	9039	USD
CY2014	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	3093	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	0	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	622076	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2387000	USD
CY2015Q3	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	2427961	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1266573	USD
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	997378	USD
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	1219641	USD
CY2015	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3168056	USD
CY2013	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1106590	USD
CY2014	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	306744	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	768922	USD
CY2013	us-gaap	Increase Decrease In Over Under Energy Recovery IncreaseDecreaseInOverUnderEnergyRecovery	-1714497	USD
CY2014	us-gaap	Increase Decrease In Over Under Energy Recovery IncreaseDecreaseInOverUnderEnergyRecovery	1208134	USD
CY2015	us-gaap	Increase Decrease In Over Under Energy Recovery IncreaseDecreaseInOverUnderEnergyRecovery	-2082257	USD
CY2013	us-gaap	Interest Expense InterestExpense	1828099	USD
CY2014	us-gaap	Interest Expense InterestExpense	1827001	USD
CY2015	us-gaap	Interest Expense InterestExpense	1512419	USD
CY2013	us-gaap	Interest Paid InterestPaid	1803528	USD
CY2014	us-gaap	Interest Paid InterestPaid	1966263	USD
CY2015	us-gaap	Interest Paid InterestPaid	1002462	USD
CY2014Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	139127641	USD
CY2015Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	148140730	USD
CY2014Q3	us-gaap	Liabilities Current LiabilitiesCurrent	20352634	USD
CY2015Q3	us-gaap	Liabilities Current LiabilitiesCurrent	23202984	USD
CY2014Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	30500000	USD
CY2015Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	30500000	USD
CY2014Q3	us-gaap	Liabilities Fair Value Disclosure Recurring LiabilitiesFairValueDisclosureRecurring	795019	USD
CY2015Q3	us-gaap	Liabilities Fair Value Disclosure Recurring LiabilitiesFairValueDisclosureRecurring	712710	USD
CY2014Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	36447241	USD
CY2015Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	41780182	USD
CY2013Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	5000000	USD
CY2014Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	15000000	USD
CY2015Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	24000000	USD
CY2015	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2016-03-31
CY2013Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0118
CY2014Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0116
CY2015Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0120
CY2013	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0121
CY2014	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0116
CY2015	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0117
CY2013	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0015
CY2014	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0015
CY2015	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0015
CY2014Q3	us-gaap	Long Term Debt LongTermDebt	30500000	USD
CY2015Q3	us-gaap	Long Term Debt LongTermDebt	30500000	USD
CY2014Q3	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	30500000	USD
CY2015Q3	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	30500000	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	30500000	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	0	USD
CY2015	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	13486885	USD
CY2013	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1480746	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	4262052	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	1722788	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6839738	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	16760827	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	0	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	0	USD
CY2015Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	0	USD
CY2014Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	30500000	USD
CY2015Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	30500000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-6153207	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	5862365	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2875076	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-9947510	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-14698570	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-13750274	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	10037070	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	2846795	USD
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	283194	USD
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	-144337	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	4708440	USD
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	1924376	USD
CY2015Q1	us-gaap	Net Income Loss NetIncomeLoss	2779344	USD
CY2015Q2	us-gaap	Net Income Loss NetIncomeLoss	354940	USD
CY2015Q3	us-gaap	Net Income Loss NetIncomeLoss	35755	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	5094415	USD
CY2015	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	8795055	USD
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	3272646	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	5121022	USD
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	940691	USD
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	347509	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	9681868	USD
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	3514352	USD
CY2015Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	4879469	USD
CY2015Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	956219	USD
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	656152	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	10006192	USD
CY2014Q3	us-gaap	Other Assets Current OtherAssetsCurrent	1104660	USD
CY2015Q3	us-gaap	Other Assets Current OtherAssetsCurrent	1182343	USD
CY2014Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	100058	USD
CY2015Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	144577	USD
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-1970752	USD
CY2014	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	355868	USD
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-1221866	USD
CY2014	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	220638	USD
CY2013	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-748886	USD
CY2014	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	135230	USD
CY2014	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1560386	USD
CY2013	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	2900774	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	1630827	USD
CY2015	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	1147219	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-1850352	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	930022	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-574653	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-360811	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-950501	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	-926262	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-589690	USD
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	1986695	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	576985	USD
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1232546	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	353037	USD
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	754149	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1798851	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1011908	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1147219	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-351609	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationBeforeTax	-35972	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationNetOfTax	-22303	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Transition Asset Obligation Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetTransitionAssetObligationTax	-13669	USD
CY2013	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	1101923	USD
CY2014	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	618919	USD
CY2015	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-703133	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-20479	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-58800	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-12705	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-36479	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-7774	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-22321	USD
CY2014Q3	us-gaap	Other Inventory OtherInventory	893672	USD
CY2015Q3	us-gaap	Other Inventory OtherInventory	968108	USD
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-39186	USD
CY2014	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-38073	USD
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-105815	USD
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-60117	USD
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-206887	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-228796	USD
CY2013Q3	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	0	USD
CY2014Q3	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	9045050	USD
CY2015Q3	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	9340997	USD
CY2013	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2014	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	2237961	USD
CY2015	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	USD
CY2013	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2014	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	193081	USD
CY2015	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	8033053	USD
CY2014	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3465034	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3603424	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9977433	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	14715428	USD
CY2015Q3	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	6171421	USD
CY2015Q3	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	11392645	USD
CY2015Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2014Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	13780356	USD
CY2014Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	8459436	USD
CY2015Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	10685261	USD
CY2014Q3	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2015Q3	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2014Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2015Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2014Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2015Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2014Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2015Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2014Q3	us-gaap	Prepaid Taxes PrepaidTaxes	1144214	USD
CY2015Q3	us-gaap	Prepaid Taxes PrepaidTaxes	1657066	USD
CY2013	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	1142770	USD
CY2014	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	0	USD
CY2015	us-gaap	Proceeds From Collection Of Notes Receivable ProceedsFromCollectionOfNotesReceivable	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	737076	USD
CY2014	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	213391	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	432401	USD
CY2013	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
CY2014	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	30500000	USD
CY2015	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	0	USD
CY2013	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	4354402	USD
CY2014	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	25363774	USD
CY2015	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	34698924	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	29923	USD
CY2014	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	16858	USD
CY2015	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	30082	USD
CY2013	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	85033	USD
CY2014	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	148881	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	87908	USD
CY2014Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	50645642	USD
CY2015Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	53307079	USD
CY2014Q3	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	4029019	USD
CY2015Q3	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	3903599	USD
CY2013	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0335
CY2014	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0325
CY2015	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0325
CY2014Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	108743577	USD
CY2015Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	118629552	USD
CY2014Q3	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	11757817	USD
CY2015Q3	us-gaap	Public Utilities Property Plant And Equipment Other Property Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment	12359225	USD
CY2014Q3	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	155360200	USD
CY2014Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	32699965	USD
CY2014Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	12024817	USD
CY2014Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	10280158	USD
CY2014	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	75016134	USD
CY2015Q3	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	168033032	USD
CY2014Q3	us-gaap	Public Utilities Property Plant And Equipment Transmission And Distribution PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution	134439225	USD
CY2015Q3	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	9999402	USD
CY2014Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	21250065	USD
CY2015Q3	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	7787998	USD
CY2015Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	26431729	USD
CY2015Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	10774409	USD
CY2015Q3	us-gaap	Public Utilities Property Plant And Equipment Transmission And Distribution PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution	143172628	USD
CY2015Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	9733404	USD
CY2013	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	63205666	USD
CY2013Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	20011194	USD
CY2014Q3	us-gaap	Refundable Gas Costs RefundableGasCosts	0	USD
CY2015Q3	us-gaap	Refundable Gas Costs RefundableGasCosts	1901426	USD
CY2015	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	68189607	USD
CY2013	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	62024174	USD
CY2014	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	73865487	USD
CY2015	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	67094290	USD
CY2014Q3	us-gaap	Regulatory Assets RegulatoryAssets	10004133	USD
CY2015Q3	us-gaap	Regulatory Assets RegulatoryAssets	11695250	USD
CY2014Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	9273389	USD
CY2015Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	10923243	USD
CY2014Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	13564365	USD
CY2015Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	16236145	USD
CY2015Q3	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	9513749	USD
CY2013	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	4354402	USD
CY2014	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	16318724	USD
CY2015	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	34402977	USD
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	13000000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2013	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
CY2014	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	15000000	USD
CY2015	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	0	USD
CY2014Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	21321055	USD
CY2015Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	22772377	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P6M
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0432
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0421
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0411
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3475
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3501
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3434
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0123
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0223
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0198
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	49000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	5624	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	21000	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	17000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	17000	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	4.04
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	4.43
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	4.92
CY2012Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2013Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	5229	USD
CY2014Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	34840	USD
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	43086	USD
CY2012Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0	shares
CY2013Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	21000	shares
CY2014Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	38000	shares
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	52400	shares
CY2012Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	0.00
CY2013Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.01
CY2014Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.98
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P0Y
CY2014	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	11052	shares
CY2015	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	18520	shares
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.83
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	52400	shares
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P9Y6M
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y9M
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	19.83
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	43086	USD
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0.00
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0.00
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y4M
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	18.99
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	19.01
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	18.95
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	21.60
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P8Y4M
CY2013	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	38759	shares
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0.00
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2014	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2600	shares
CY2013	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	737076	USD
CY2014	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	213391	USD
CY2015	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	383035	USD
CY2015	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	49366	USD
CY2013	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	84840	USD
CY2014	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	75310	USD
CY2015	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	83640	USD
CY2012Q3	us-gaap	Stockholders Equity StockholdersEquity	50682930	USD
CY2013Q3	us-gaap	Stockholders Equity StockholdersEquity	49502422	USD
CY2014Q3	us-gaap	Stockholders Equity StockholdersEquity	52020847	USD
CY2015Q3	us-gaap	Stockholders Equity StockholdersEquity	52840991	USD
CY2014Q3	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	193081	USD
CY2015Q3	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	183427	USD
CY2014Q3	us-gaap	Unrecovered Costs For Purchased Gas Amount UnrecoveredCostsForPurchasedGasAmount	180831	USD
CY2015Q3	us-gaap	Unrecovered Costs For Purchased Gas Amount UnrecoveredCostsForPurchasedGasAmount	0	USD
CY2013	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1181492	USD
CY2014	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1150647	USD
CY2015	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1095317	USD
CY2013	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	18807836	USD
CY2014	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	19655221	USD
CY2015	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	20200241	USD
CY2013	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	4473491	USD
CY2014	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	4711447	USD
CY2015	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	5106935	USD
CY2013	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	12853599	USD
CY2014	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	804	shares
CY2014	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	13383388	USD
CY2015	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3466	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4698766	shares
CY2015	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1606421	USD
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	39	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4716282	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4731676	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4698727	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4715478	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4728210	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:6px;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</font><font style="font-family:inherit;font-size:10pt;">—The preparation of financial statements in conformity with Generally Accepted Accounting Principles in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font></div></div>

Files In Submission

Name	View Source	Status
0001193125-15-399923-index-headers.html	Edgar Link	pending
0001193125-15-399923-index.html	Edgar Link	pending
0001193125-15-399923.txt	Edgar Link	pending
0001193125-15-399923-xbrl.zip	Edgar Link	pending
d72151d10k.htm	Edgar Link	pending
d72151dex13.htm	Edgar Link	pending
d72151dex21.htm	Edgar Link	pending
d72151dex23.htm	Edgar Link	pending
d72151dex311.htm	Edgar Link	pending
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d72151dex321.htm	Edgar Link	pending
d72151dex322.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
g72151ars_pg01.jpg	Edgar Link	pending
g72151ars_pg02.jpg	Edgar Link	pending
g72151ars_pg03.jpg	Edgar Link	pending
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g72151g07x25.jpg	Edgar Link	pending
g72151g36m23.jpg	Edgar Link	pending
g72151g68a01.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
rgco-20150930.xml	Edgar Link	completed
rgco-20150930.xsd	Edgar Link	pending
rgco-20150930_cal.xml	Edgar Link	unprocessable
rgco-20150930_def.xml	Edgar Link	unprocessable
rgco-20150930_lab.xml	Edgar Link	unprocessable
rgco-20150930_pre.xml	Edgar Link	unprocessable
Show.js	Edgar Link	pending

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$RGCO
RGC RESOURCES INC Stock $rgco

2014 Q3 Form 10-K Financial Statement

#000119312515399923 Filed on December 10, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RGCO RGC RESOURCES INC Stock $rgco

2014 Q3 Form 10-K Financial Statement

#000119312515399923 Filed on December 10, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RGCO
RGC RESOURCES INC Stock $rgco