$RGCO
RGC RESOURCES INC Stock $rgco

$rgco Overview Financials Valuation SEC Filings Company Website

2018 Form 10-K Financial Statement

#000106953318000048 Filed on December 03, 2018

Income Statement

Concept	2018	2017 Q3	2017 Q2
Revenue	$65.53M	$10.17M	$11.44M
YoY Change	5.2%	1.93%	1.25%
Cost Of Revenue	$32.80M	$4.220M	$4.800M
YoY Change	11.19%	2.43%	-3.61%
Gross Profit	$32.70M	$5.954M	$6.634M
YoY Change	-0.33%	1.52%	5.1%
Gross Profit Margin	49.9%	58.53%	58.01%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$7.090M	$1.590M	$1.590M
YoY Change	11.16%	8.9%	11.97%
% of Gross Profit	21.68%	26.7%	23.97%
Operating Expenses	$21.30M	$4.660M	$5.310M
YoY Change	3.4%	-7.54%	9.26%
Operating Profit	$11.47M	$766.6K	$1.328M
YoY Change	-5.92%	-6.09%	-8.61%
Interest Expense	$2.462M	-$390.0K	$472.3K
YoY Change	28.39%	8.33%	19.18%
% of Operating Profit	21.46%	-50.87%	35.56%
Other Income/Expense, Net	$244.9K	-$640.0K	-$8.738K
YoY Change	-137.16%	255.56%	-77.68%
Pretax Income	$10.19M	$270.0K	$958.8K
YoY Change	1.53%	0.0%	-9.42%
Income Tax	$2.895M	$110.0K	$343.2K
% Of Pretax Income	28.41%	40.74%	35.8%
Net Earnings	$7.297M	$159.9K	$615.6K
YoY Change	17.08%	9.84%	-1.83%
Net Earnings / Revenue	11.13%	1.57%	5.38%
Basic Earnings Per Share	$0.95	$0.02	$0.09
Diluted Earnings Per Share	$0.95	$0.02	$0.08
COMMON SHARES
Basic Shares Outstanding	7.649M shares	7.232M shares	7.227M shares
Diluted Shares Outstanding	7.696M shares		7.274M shares

Balance Sheet

Concept	2018	2017 Q3	2017 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$200.0K	$100.0K	$800.0K
YoY Change	100.0%	-83.33%	-11.11%
Cash & Equivalents	$200.0K	$69.64K	$763.8K
Short-Term Investments
Other Short-Term Assets	$3.000M	$1.577M	$1.273M
YoY Change	-11.76%	1.82%	6.41%
Inventory	$8.500M	$8.700M	$6.400M
Prepaid Expenses
Receivables	$3.700M	$3.493M	$4.659M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$15.50M	$15.69M	$13.13M
YoY Change	-1.27%	1.31%	4.45%
LONG-TERM ASSETS
Property, Plant & Equipment	$166.0M	$147.9M	$145.0M
YoY Change	12.24%	11.96%	13.37%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$28.50M	$7.400M	$5.700M
YoY Change	285.14%	111.43%	67.65%
Other Assets	$9.500M	$190.1K	$115.7K
YoY Change	-21.49%	67.41%	12.44%
Total Long-Term Assets	$204.1M	$19.52M	$20.44M
YoY Change	21.92%	8.8%	39.47%
TOTAL ASSETS
Total Short-Term Assets	$15.50M	$15.69M	$13.13M
Total Long-Term Assets	$204.1M	$19.52M	$20.44M
Total Assets	$219.6M	$183.1M	$178.5M
YoY Change	19.93%	10.62%	15.11%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$5.200M	$5.123M	$5.731M
YoY Change	1.96%	-4.17%	13.42%
Accrued Expenses	$3.100M	$3.007M	$2.485M
YoY Change	3.33%	-5.86%	0.87%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$24.10M	$14.37M	$15.72M
YoY Change	67.36%	-49.59%	-31.65%
LONG-TERM LIABILITIES
Long-Term Debt	$70.30M	$61.31M	$53.08M
YoY Change	14.68%	82.28%	61.7%
Other Long-Term Liabilities	$33.00M	$24.30M	$29.40M
YoY Change	35.8%	-15.63%	15.75%
Total Long-Term Liabilities	$103.3M	$47.42M	$50.05M
YoY Change	20.68%	-0.7%	17.18%
TOTAL LIABILITIES
Total Short-Term Liabilities	$24.10M	$14.37M	$15.72M
Total Long-Term Liabilities	$103.3M	$47.42M	$50.05M
Total Liabilities	$140.0M	$61.78M	$65.78M
YoY Change	13.73%	-18.97%	0.09%
SHAREHOLDERS EQUITY
Retained Earnings		$24.75M	$25.64M
YoY Change		0.13%	0.39%
Common Stock		$36.50M	$36.34M
YoY Change		9.11%	9.48%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$79.60M	$60.04M	$59.67M
YoY Change
Total Liabilities & Shareholders Equity	$219.6M	$183.1M	$178.5M
YoY Change	19.93%	10.62%	15.11%

Cashflow Statement

Concept	2018	2017 Q3	2017 Q2
OPERATING ACTIVITIES
Net Income	$7.297M	$159.9K	$615.6K
YoY Change	17.08%	9.84%	-1.83%
Depreciation, Depletion And Amortization	$7.090M	$1.590M	$1.590M
YoY Change	11.16%	8.9%	11.97%
Cash From Operating Activities	$13.50M	-$2.770M	$4.110M
YoY Change	4.03%	346.77%	-11.23%
INVESTING ACTIVITIES
Capital Expenditures	$23.29M	-$4.300M	-$5.050M
YoY Change	12.24%	-20.22%	14.77%
Acquisitions
YoY Change
Other Investing Activities	-$10.88M	-$950.0K	-$880.0K
YoY Change	297.08%	21.79%	37.5%
Cash From Investing Activities	-$34.17M	-$5.250M	-$5.930M
YoY Change	45.44%	-14.91%	17.66%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$16.52M
YoY Change	1607.15%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$20.84M	7.330M	2.040M
YoY Change	109.71%	12.42%	229.03%
NET CHANGE
Cash From Operating Activities	$13.50M	-2.770M	4.110M
Cash From Investing Activities	-$34.17M	-5.250M	-5.930M
Cash From Financing Activities	$20.84M	7.330M	2.040M
Net Change In Cash	$177.8K	-690.0K	220.0K
YoY Change	-130.99%	155.56%	4.76%
FREE CASH FLOW
Cash From Operating Activities	$13.50M	-$2.770M	$4.110M
Capital Expenditures	$23.29M	-$4.300M	-$5.050M
Free Cash Flow	-$9.787M	$1.530M	$9.160M
YoY Change	25.97%	-67.92%	1.44%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-09-30
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0001069533
CY2018Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	8003606	shares
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Filer Category EntityFilerCategory	Smaller Reporting Company
CY2018Q1	dei	Entity Public Float EntityPublicFloat	188207371	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	RGC RESOURCES INC
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2016	rgco	Accounts Payable Customer Credits And Accrued Expenses Net AccountsPayableCustomerCreditsAndAccruedExpensesNet	60303	USD
CY2017	rgco	Accounts Payable Customer Credits And Accrued Expenses Net AccountsPayableCustomerCreditsAndAccruedExpensesNet	-1374713	USD
CY2018	rgco	Accounts Payable Customer Credits And Accrued Expenses Net AccountsPayableCustomerCreditsAndAccruedExpensesNet	-25902	USD
CY2017Q3	rgco	Accrual Of Estimated Revenues For Natural Gas Delivered To Customers But Not Billed During Period AccrualOfEstimatedRevenuesForNaturalGasDeliveredToCustomersButNotBilledDuringPeriod	965683	USD
CY2018Q3	rgco	Accrual Of Estimated Revenues For Natural Gas Delivered To Customers But Not Billed During Period AccrualOfEstimatedRevenuesForNaturalGasDeliveredToCustomersButNotBilledDuringPeriod	911657	USD
CY2018	rgco	Asset Management Contract Term AssetManagementContractTerm	P3Y
CY2017Q3	rgco	Capital Contributions Payable CapitalContributionsPayable	1055504	USD
CY2018Q3	rgco	Capital Contributions Payable CapitalContributionsPayable	10142766	USD
CY2016	rgco	Changein Investmentin Unconsolidated Affiliate ChangeinInvestmentinUnconsolidatedAffiliate	3496404	USD
CY2017	rgco	Changein Investmentin Unconsolidated Affiliate ChangeinInvestmentinUnconsolidatedAffiliate	3948702	USD
CY2018	rgco	Changein Investmentin Unconsolidated Affiliate ChangeinInvestmentinUnconsolidatedAffiliate	21062040	USD
CY2016	rgco	Cost Of Plant Retirement CostOfPlantRetirement	449201	USD
CY2017	rgco	Cost Of Plant Retirement CostOfPlantRetirement	354744	USD
CY2018	rgco	Cost Of Plant Retirement CostOfPlantRetirement	288222	USD
CY2016	rgco	Customer Refund Liability Increase Decrease CustomerRefundLiabilityIncreaseDecrease	0	USD
CY2017	rgco	Customer Refund Liability Increase Decrease CustomerRefundLiabilityIncreaseDecrease	0	USD
CY2018	rgco	Customer Refund Liability Increase Decrease CustomerRefundLiabilityIncreaseDecrease	1320167	USD
CY2018	rgco	Debt Instrument Debt Covenant Ratioof Longterm Debtto Total Capitalization Maximum DebtInstrumentDebtCovenantRatioofLongtermDebttoTotalCapitalizationMaximum	0.65
CY2018	rgco	Deferred Charges Amortization Period DeferredChargesAmortizationPeriod	P12M
CY2017Q3	rgco	Deferred Tax Asset Regulatory Effect Of Tax Cuts And Jobs Act Of2017 DeferredTaxAssetRegulatoryEffectOfTaxCutsAndJobsActOf2017	0	USD
CY2018Q3	rgco	Deferred Tax Asset Regulatory Effect Of Tax Cuts And Jobs Act Of2017 DeferredTaxAssetRegulatoryEffectOfTaxCutsAndJobsActOf2017	2946649	USD
CY2017Q3	rgco	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	1747429	USD
CY2018Q3	rgco	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	897834	USD
CY2017Q3	rgco	Deferred Tax Assets Tax Deferred Expense Costs Of Gas Held In Storage DeferredTaxAssetsTaxDeferredExpenseCostsOfGasHeldInStorage	1009206	USD
CY2018Q3	rgco	Deferred Tax Assets Tax Deferred Expense Costs Of Gas Held In Storage DeferredTaxAssetsTaxDeferredExpenseCostsOfGasHeldInStorage	591899	USD
CY2017Q3	rgco	Deferred Tax Assets Tax Deferred Expense Customer Refund Liability DeferredTaxAssetsTaxDeferredExpenseCustomerRefundLiability	0	USD
CY2018Q3	rgco	Deferred Tax Assets Tax Deferred Expense Customer Refund Liability DeferredTaxAssetsTaxDeferredExpenseCustomerRefundLiability	339812	USD
CY2018Q3	rgco	Defined Benefit Plan Amortization Of Net Gains Losses Regulatory Deferral DefinedBenefitPlanAmortizationOfNetGainsLossesRegulatoryDeferral	293000	USD
CY2018Q3	rgco	Energy Purchase Obligation Due In Next Twelve Months EnergyPurchaseObligationDueInNextTwelveMonths	2089578	MMBTU
CY2018Q3	rgco	Energy Purchase Obligation Due In Second Year EnergyPurchaseObligationDueInSecondYear	2071061	MMBTU
CY2018Q3	rgco	Energy Purchase Obligation Due In Third Year EnergyPurchaseObligationDueInThirdYear	295866	MMBTU
CY2018Q3	rgco	Energy Purchase Obligation Due Total EnergyPurchaseObligationDueTotal	4456505	MMBTU
CY2018	rgco	Franchise Agreement Term FranchiseAgreementTerm	P20Y
CY2018	rgco	Franchise Fee Annual Increase FranchiseFeeAnnualIncrease	0.03
CY2018	rgco	Franchise Fee Total Cost Through End Of Agreement FranchiseFeeTotalCostThroughEndOfAgreement	2512411	USD
CY2016	rgco	Increase Decrease In Accounts Receivable Net Of Customer Deposits IncreaseDecreaseInAccountsReceivableNetOfCustomerDeposits	258960	USD
CY2017	rgco	Increase Decrease In Accounts Receivable Net Of Customer Deposits IncreaseDecreaseInAccountsReceivableNetOfCustomerDeposits	191386	USD
CY2018	rgco	Increase Decrease In Accounts Receivable Net Of Customer Deposits IncreaseDecreaseInAccountsReceivableNetOfCustomerDeposits	476161	USD
CY2017Q3	rgco	Natural Gas Purchases Fair Value Disclosure NaturalGasPurchasesFairValueDisclosure	805159	USD
CY2018Q3	rgco	Natural Gas Purchases Fair Value Disclosure NaturalGasPurchasesFairValueDisclosure	693495	USD
CY2016	rgco	Net Amortization Of Excess Deferred Taxes On Regulated Operations NetAmortizationOfExcessDeferredTaxesOnRegulatedOperations	0	USD
CY2017	rgco	Net Amortization Of Excess Deferred Taxes On Regulated Operations NetAmortizationOfExcessDeferredTaxesOnRegulatedOperations	0	USD
CY2018	rgco	Net Amortization Of Excess Deferred Taxes On Regulated Operations NetAmortizationOfExcessDeferredTaxesOnRegulatedOperations	264106	USD
CY2018Q3	rgco	Number Of Customers NumberOfCustomers	60200	customer
CY2018	rgco	Number Of Pipelines NumberOfPipelines	2	pipeline
CY2016	rgco	Other Comprehensive Income Amortizationof Defined Benefit Plan Recognizedin Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationofDefinedBenefitPlanRecognizedinNetPeriodicPensionCostTax	-84006	USD
CY2017	rgco	Other Comprehensive Income Amortizationof Defined Benefit Plan Recognizedin Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationofDefinedBenefitPlanRecognizedinNetPeriodicPensionCostTax	-97369	USD
CY2018	rgco	Other Comprehensive Income Amortizationof Defined Benefit Plan Recognizedin Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationofDefinedBenefitPlanRecognizedinNetPeriodicPensionCostTax	6890	USD
CY2016	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicBenefitCostBeforeTax	-221070	USD
CY2017	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicBenefitCostBeforeTax	-256234	USD
CY2018	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicBenefitCostBeforeTax	23887	USD
CY2016	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicPensionCostNetOfTax	-137064	USD
CY2017	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicPensionCostNetOfTax	-158865	USD
CY2018	rgco	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansRecognizedInNetPeriodicPensionCostNetOfTax	16997	USD
CY2017Q3	rgco	Public Utilities Property Plant And Equipment In Service Net PublicUtilitiesPropertyPlantAndEquipmentInServiceNet	144457727	USD
CY2018Q3	rgco	Public Utilities Property Plant And Equipment In Service Net PublicUtilitiesPropertyPlantAndEquipmentInServiceNet	161755014	USD
CY2017Q3	rgco	Public Utilities Property Plant And Equipment Liquefied Natural Gas PublicUtilitiesPropertyPlantAndEquipmentLiquefiedNaturalGas	13299288	USD
CY2018Q3	rgco	Public Utilities Property Plant And Equipment Liquefied Natural Gas PublicUtilitiesPropertyPlantAndEquipmentLiquefiedNaturalGas	13413175	USD
CY2017Q3	rgco	Public Utilities Property Plant And Equipment Other Property Plant And Equipment Gross PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipmentGross	13078807	USD
CY2018Q3	rgco	Public Utilities Property Plant And Equipment Other Property Plant And Equipment Gross PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipmentGross	14662599	USD
CY2016	rgco	Reclassification Between Currentand Deferred Income Taxes ReclassificationBetweenCurrentandDeferredIncomeTaxes	1283925	USD
CY2017Q3	rgco	Regulatory Cost Of Retirement Obligations RegulatoryCostOfRetirementObligations	10055189	USD
CY2018Q3	rgco	Regulatory Cost Of Retirement Obligations RegulatoryCostOfRetirementObligations	11163981	USD
CY2018	rgco	Regulatory Utility Assets Provision Period RegulatoryUtilityAssetsProvisionPeriod	P5Y
CY2016	rgco	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	0	USD
CY2017	rgco	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	0	USD
CY2018	rgco	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	256444	USD
CY2018	rgco	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	260000	USD
CY2018	rgco	Tax Cuts And Jobs Act Of2017 Decrease In Deferred Tax Liability TaxCutsAndJobsActOf2017DecreaseInDeferredTaxLiability	9000000	USD
CY2018	rgco	Tax Cuts And Jobs Act Of2017 Gross Up To Pre Tax Basis TaxCutsAndJobsActOf2017GrossUpToPreTaxBasis	3000000	USD
CY2018	rgco	Tax Cuts And Jobs Act Of2017 Reclassification Adjustment Tax Effect TaxCutsAndJobsActOf2017ReclassificationAdjustmentTaxEffect	20285	USD
CY2017Q3	rgco	Tax Cutsand Jobs Actof2017 Estimated Accounting Changein Tax Rate Net Regulatory Liability TaxCutsandJobsActof2017EstimatedAccountingChangeinTaxRateNetRegulatoryLiability	0	USD
CY2018Q3	rgco	Tax Cutsand Jobs Actof2017 Estimated Accounting Changein Tax Rate Net Regulatory Liability TaxCutsandJobsActof2017EstimatedAccountingChangeinTaxRateNetRegulatoryLiability	11447736	USD
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CY2018	rgco	Tax Cutsand Jobs Actof2017 Estimated Accounting Changein Tax Rate Regulatory Liability Depreciation TaxCutsandJobsActof2017EstimatedAccountingChangeinTaxRateRegulatoryLiabilityDepreciation	13100000	USD
CY2018	rgco	Unamortized Losson Early Retirementof Debt Amortization Period UnamortizedLossonEarlyRetirementofDebtAmortizationPeriod	P20Y
CY2017Q3	rgco	Unamortizedlossonearlyretirementofdebtdeferredasregulatoryasset Unamortizedlossonearlyretirementofdebtdeferredasregulatoryasset	1941182	USD
CY2018Q3	rgco	Unamortizedlossonearlyretirementofdebtdeferredasregulatoryasset Unamortizedlossonearlyretirementofdebtdeferredasregulatoryasset	1826995	USD
CY2016	rgco	Unregulated Cost Of Sales UnregulatedCostOfSales	489047	USD
CY2017	rgco	Unregulated Cost Of Sales UnregulatedCostOfSales	568088	USD
CY2018	rgco	Unregulated Cost Of Sales UnregulatedCostOfSales	666524	USD
CY2017Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	5122899	USD
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CY2017Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1202264	USD
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CY2017	us-gaap	Adjustments To Additional Paid In Capital Stock Issued Issuance Costs AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts	96508	USD
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CY2017	us-gaap	Adjustments To Additional Paid In Capital Stock Split AdjustmentsToAdditionalPaidInCapitalStockSplit	0	USD
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CY2017	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	172790	USD
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CY2016	us-gaap	Asset Management Costs AssetManagementCosts	24852000	USD
CY2017	us-gaap	Asset Management Costs AssetManagementCosts	28496000	USD
CY2018	us-gaap	Asset Management Costs AssetManagementCosts	31137000	USD
CY2017	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	312503	USD
CY2018	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	332537	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	65556	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	79608	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	137304	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	126907	USD
CY2017	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	146682	USD
CY2018	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	62717	USD
CY2016Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	5682556	USD
CY2017Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	6069993	USD
CY2018Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	6417948	USD
CY2017Q3	us-gaap	Assets Assets	183135071	USD
CY2018Q3	us-gaap	Assets Assets	219560106	USD
CY2017Q3	us-gaap	Assets Current AssetsCurrent	15685604	USD
CY2018Q3	us-gaap	Assets Current AssetsCurrent	15544602	USD
CY2017Q3	us-gaap	Assets Fair Value Disclosure Recurring AssetsFairValueDisclosureRecurring	116843	USD
CY2018Q3	us-gaap	Assets Fair Value Disclosure Recurring AssetsFairValueDisclosureRecurring	310563	USD
CY2017Q3	us-gaap	Assets Noncurrent AssetsNoncurrent	19521496	USD
CY2018Q3	us-gaap	Assets Noncurrent AssetsNoncurrent	38051876	USD
CY2015Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	985234	USD
CY2016Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	643252	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	69640	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	247411	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-341982	USD
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.58
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.62
CY2017Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-573612	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	177771	USD
CY2017Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.54
CY2018Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	5
CY2017Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000	shares
CY2018Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000	shares
CY2017Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7240846	shares
CY2018Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7994615	shares
CY2017Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	7240846	shares
CY2018Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	7994615	shares
CY2017Q3	us-gaap	Common Stock Value CommonStockValue	36204230	USD
CY2018Q3	us-gaap	Common Stock Value CommonStockValue	39973075	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5596180	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	7527832	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	7841853	USD
CY2016	us-gaap	Cost Of Natural Gas Purchases CostOfNaturalGasPurchases	27009330	USD
CY2017	us-gaap	Cost Of Natural Gas Purchases CostOfNaturalGasPurchases	28919625	USD
CY2018	us-gaap	Cost Of Natural Gas Purchases CostOfNaturalGasPurchases	32091923	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1216745	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	72368	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1831085	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-800770	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	480011	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2139142	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	415975	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	407643	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	308057	USD
CY2017Q3	us-gaap	Customer Advances Current CustomerAdvancesCurrent	1220578	USD
CY2018Q3	us-gaap	Customer Advances Current CustomerAdvancesCurrent	1003622	USD
CY2017Q3	us-gaap	Customer Deposits Current CustomerDepositsCurrent	1471960	USD
CY2018Q3	us-gaap	Customer Deposits Current CustomerDepositsCurrent	1421043	USD
CY2017Q3	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	0	USD
CY2018Q3	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	1320167	USD
CY2017Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	61603960	USD
CY2018Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	70604217	USD
CY2018	us-gaap	Debt Instrument Term DebtInstrumentTerm	P20Y
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	4302906	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	3129925	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	440282	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4466954	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3325379	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	755994	USD
CY2017Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	27829657	USD
CY2018Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	18563402	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	164048	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	195454	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	315712	USD
CY2017Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	4752809	USD
CY2018Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	5977825	USD
CY2017Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	348833	USD
CY2018Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	298129	USD
CY2017Q3	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	545894	USD
CY2018Q3	us-gaap	Deferred Tax Assets Regulatory Assets And Liabilities DeferredTaxAssetsRegulatoryAssetsAndLiabilities	0	USD
CY2017Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	239414	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	160001	USD
CY2017Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	824281	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	716843	USD
CY2017Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	37752	USD
CY2018Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	26658	USD
CY2017Q3	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	154817	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	245678	USD
CY2017Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	23076848	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	12585577	USD
CY2017Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	44354	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	79939	USD
CY2017Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	27630486	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	17982215	USD
CY2017Q3	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	0	USD
CY2018Q3	us-gaap	Deferred Tax Liabilities Regulatory Assets And Liabilities DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities	255570	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	2025000	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	123000	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	2487000	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	155000	USD
CY2018Q3	us-gaap	Defined Benefit Plan Expected Amortization Next Fiscal Year DefinedBenefitPlanExpectedAmortizationNextFiscalYear	10000	USD
CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	353793	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	361702	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	338066	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	5709525	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6378368	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	7090169	USD
CY2017Q3	us-gaap	Derivative Assets DerivativeAssets	116843	USD
CY2018Q3	us-gaap	Derivative Assets DerivativeAssets	310563	USD
CY2017Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	26777	USD
CY2018Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	100723	USD
CY2017Q3	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	90066	USD
CY2018Q3	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	209840	USD
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	3865933	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	4195910	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	4839514	USD
CY2017Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	1050281	USD
CY2018Q3	us-gaap	Dividends Payable Current DividendsPayableCurrent	1242753	USD
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.81
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.45
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.09
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.86
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.47
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.09
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.95
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.81
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.08
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.86
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.47
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.14
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.09
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.95
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.34
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.243
CY2017Q3	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	7701894	USD
CY2018Q3	us-gaap	Energy Related Inventory Natural Gas In Storage EnergyRelatedInventoryNaturalGasInStorage	7627196	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	9473050	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10038255	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10192341	USD
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	152864	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	421646	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	938531	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3666184	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3805390	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2895136	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	3220837	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	3413007	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2476739	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	62532	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-5661	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-46134	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	382815	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	398044	USD
CY2016	us-gaap	Interest Expense InterestExpense	1636321	USD
CY2017	us-gaap	Interest Expense InterestExpense	1917254	USD
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	46687	shares
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	472193	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-907000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	726000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1180000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-867682	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	462161	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-182000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	398864	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	956894	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-784566	USD
CY2016	us-gaap	Increase Decrease In Over Under Energy Recovery IncreaseDecreaseInOverUnderEnergyRecovery	991739	USD
CY2017	us-gaap	Increase Decrease In Over Under Energy Recovery IncreaseDecreaseInOverUnderEnergyRecovery	-528387	USD
CY2018	us-gaap	Increase Decrease In Over Under Energy Recovery IncreaseDecreaseInOverUnderEnergyRecovery	2360972	USD
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	9857	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	37360	shares
CY2018	us-gaap	Interest Expense InterestExpense	2461565	USD
CY2016	us-gaap	Interest Paid InterestPaid	1480665	USD
CY2017	us-gaap	Interest Paid InterestPaid	1734178	USD
CY2018	us-gaap	Interest Paid InterestPaid	2137782	USD
CY2017Q3	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	7445106	USD
CY2018Q3	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	28507146	USD
CY2017Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	183135071	USD
CY2018Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	219560106	USD
CY2017Q3	us-gaap	Liabilities Current LiabilitiesCurrent	14366232	USD
CY2018Q3	us-gaap	Liabilities Current LiabilitiesCurrent	24091849	USD
CY2017Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	43812200	USD
CY2018Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	63243200	USD
CY2017Q3	us-gaap	Liabilities Fair Value Disclosure Recurring LiabilitiesFairValueDisclosureRecurring	805159	USD
CY2018Q3	us-gaap	Liabilities Fair Value Disclosure Recurring LiabilitiesFairValueDisclosureRecurring	693495	USD
CY2017Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	47416356	USD
CY2018Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	45563209	USD
CY2016	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	9620914	USD
CY2017	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	10936114	USD
CY2018	us-gaap	Line Of Credit Facility Average Outstanding Amount LineOfCreditFacilityAverageOutstandingAmount	6730334	USD
CY2016Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	24000000	USD
CY2017Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	21000000	USD
CY2018Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	20000000	USD
CY2016Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0153
CY2017Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0223
CY2018Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0326
CY2016	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0140
CY2017	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0192
CY2018	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0253
CY2016	us-gaap	Line Of Credit Facility Maximum Monthend Outstanding Amount LineOfCreditFacilityMaximumMonthendOutstandingAmount	15246089	USD
CY2017	us-gaap	Line Of Credit Facility Maximum Monthend Outstanding Amount LineOfCreditFacilityMaximumMonthendOutstandingAmount	17791760	USD
CY2018	us-gaap	Line Of Credit Facility Maximum Monthend Outstanding Amount LineOfCreditFacilityMaximumMonthendOutstandingAmount	17054377	USD
CY2016	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0015
CY2017	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0015
CY2018	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0015
CY2017Q3	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	43812200	USD
CY2018Q3	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	63243200	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	38500000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	0	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	7000000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	17743200	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	7361017	USD
CY2017Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	61312011	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	70321936	USD
CY2016Q3	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	14556785	USD
CY2017Q3	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	17791760	USD
CY2018Q3	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	7361017	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	5732879	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	9937965	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	20840554	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-20996501	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-23492555	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-34166578	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	14921640	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	12980978	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	13503795	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	5806866	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	2232218	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	3225199	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	615562	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	159886	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	6232865	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	2059462	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	3465929	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	1087355	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	684459	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	7297205	USD
CY2016	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	287794	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	767710	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	9087262	USD
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	11212092	USD
CY2016Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	3982275	USD
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	5589207	USD
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1328207	USD
CY2017	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	9916000	USD
CY2018	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	19431000	USD
CY2016	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	38310326	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	766620	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	11666309	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	3675124	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	5306718	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1866223	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	744980	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	11593045	USD
CY2017Q3	us-gaap	Other Assets Current OtherAssetsCurrent	1576574	USD
CY2018Q3	us-gaap	Other Assets Current OtherAssetsCurrent	980972	USD
CY2017Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	190064	USD
CY2018Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	472743	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	339817	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-1971739	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-571683	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	210686	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-1222478	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-406798	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-347750	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	1063613	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	423795	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-213137	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	651892	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	171775	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	129131	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-749261	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-164885	USD
CY2016	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-339817	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	2088582	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	765403	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	116843	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	193720	USD
CY2016	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	72489	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	137850	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	44354	USD
CY2018	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	55870	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-210686	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1294967	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	544648	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-560887	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	1715505	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	595570	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	24053	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	17116	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	6937	USD
CY2016	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-129131	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	793615	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	220755	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	116843	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	217773	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	72489	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	154966	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	44354	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	62807	USD
CY2017Q3	us-gaap	Other Inventory OtherInventory	1021191	USD
CY2018Q3	us-gaap	Other Inventory OtherInventory	913889	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-197298	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-203743	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-163482	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-255585	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-132446	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	122330	USD
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	101619	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	64835	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	32678	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	3808683	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	4115873	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	4647042	USD
CY2016	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	3055746	USD
CY2017	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	2759346	USD
CY2018	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	11036247	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17945719	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	20750181	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	23290994	USD
CY2017Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	8214326	USD
CY2018Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	3947967	USD
CY2017Q3	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue
CY2018Q3	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue
CY2017Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2017Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q3	us-gaap	Prepaid Taxes PrepaidTaxes	1796825	USD
CY2018Q3	us-gaap	Prepaid Taxes PrepaidTaxes	837683	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1031194	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	967698	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	16520016	USD
CY2016	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	3396200	USD
CY2017Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	147927971	USD
CY2018Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	63099306	USD
CY2017Q3	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	3470244	USD
CY2018Q3	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	4208614	USD
CY2016	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0325
CY2017	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0329
CY2018	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.0332
CY2018Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	165963628	USD
CY2017Q3	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	204223714	USD
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	42569303	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	29814468	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	4964	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	16972	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	160663	USD
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	41762	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	142241	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	19945	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	14074	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	84587	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	169096	USD
CY2017Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	59765987	USD
CY2018Q3	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	224854320	USD
CY2017Q3	us-gaap	Public Utilities Property Plant And Equipment Transmission And Distribution PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution	177845619	USD
CY2018Q3	us-gaap	Public Utilities Property Plant And Equipment Transmission And Distribution PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution	196778546	USD
CY2018Q3	us-gaap	Purchase Obligation PurchaseObligation	36712851	USD
CY2018Q3	us-gaap	Purchase Obligation Due After Fifth Year PurchaseObligationDueAfterFifthYear	1950134	USD
CY2018Q3	us-gaap	Purchase Obligation Due In Fifth Year PurchaseObligationDueInFifthYear	2369904	USD
CY2018Q3	us-gaap	Purchase Obligation Due In Fourth Year PurchaseObligationDueInFourthYear	5847945	USD
CY2018Q3	us-gaap	Purchase Obligation Due In Next Twelve Months PurchaseObligationDueInNextTwelveMonths	11184000	USD
CY2018Q3	us-gaap	Purchase Obligation Due In Second Year PurchaseObligationDueInSecondYear	8856915	USD
CY2018Q3	us-gaap	Purchase Obligation Due In Third Year PurchaseObligationDueInThirdYear	6503953	USD
CY2017Q3	us-gaap	Refundable Gas Costs RefundableGasCosts	1438074	USD
CY2018Q3	us-gaap	Refundable Gas Costs RefundableGasCosts	0	USD
CY2016	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	59063291	USD
CY2016Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	18788585	USD
CY2017Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	21900013	USD
CY2017Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	11435824	USD
CY2017Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	10172448	USD
CY2017	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	62296870	USD
CY2017Q4	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	18756051	USD
CY2018Q1	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	24917973	USD
CY2018Q2	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	11889570	USD
CY2018Q3	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	9971142	USD
CY2018	us-gaap	Regulated And Unregulated Operating Revenue RegulatedAndUnregulatedOperatingRevenue	65534736	USD
CY2016	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	58079990	USD
CY2017	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	61252015	USD
CY2018	us-gaap	Regulated Operating Revenue Gas RegulatedOperatingRevenueGas	64341783	USD
CY2017Q3	us-gaap	Regulatory Assets RegulatoryAssets	12715831	USD
CY2018Q3	us-gaap	Regulatory Assets RegulatoryAssets	10259592	USD
CY2017Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	11796260	USD
CY2018Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	8862147	USD
CY2017Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	17778770	USD
CY2018Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	31019866	USD
CY2018Q3	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	10247647	USD
CY2016	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	33094539	USD
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	39334328	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	40245210	USD
CY2017Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	24746021	USD
CY2018Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	27438049	USD
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CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	15256	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
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CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	12000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	24000	shares
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	25500	shares
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.69
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.89
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CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	43086	USD
CY2016Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	200211	USD
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1448338	USD
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	1237286	USD
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	78600	shares
CY2016Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	87300	shares
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	101575	shares
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	100000	shares
CY2015Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	13.22
CY2016Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	13.50
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0.00
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	14.15
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.00
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	16.37
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	14.31
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	14.34
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	100000	shares
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	14.34
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	1237286	USD
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	12.65
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	12.67
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	12.66
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	13.20
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0.00
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2017	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 Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y4M
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y10M
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y7M
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y7M
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P6Y7M
CY2018Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	700000	shares
CY2016	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	66887	shares
CY2017	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	47187	shares
CY2018	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	752194	shares
CY2016	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3300	shares
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	11225	shares
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1575	shares
CY2016	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	989432	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	921965	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	17490530	USD
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	64640	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	73780	USD
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	41762	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	142241	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	19945	USD
CY2016	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	64640	USD
CY2017	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	73780	USD
CY2018	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	0	USD
CY2015Q3	us-gaap	Stockholders Equity StockholdersEquity	52840991	USD
CY2016Q3	us-gaap	Stockholders Equity StockholdersEquity	55667072	USD
CY2017Q3	us-gaap	Stockholders Equity StockholdersEquity	60040472	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	79583112	USD
CY2017Q3	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	291949	USD
CY2018Q3	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	282281	USD
CY2017Q3	us-gaap	Unrecovered Costs For Purchased Gas Amount UnrecoveredCostsForPurchasedGasAmount	0	USD
CY2018Q3	us-gaap	Unrecovered Costs For Purchased Gas Amount UnrecoveredCostsForPurchasedGasAmount	922898	USD
CY2016	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	983301	USD
CY2017	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1044855	USD
CY2018	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	1192953	USD
CY2017Q3	us-gaap	Unsecured Long Term Debt UnsecuredLongTermDebt	43812200	USD
CY2018Q3	us-gaap	Unsecured Long Term Debt UnsecuredLongTermDebt	63243200	USD
CY2016	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	47851199	USD
CY2017	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	50630561	USD
CY2018	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	53941691	USD
CY2016	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	5591610	USD
CY2017	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	6256737	USD
CY2018	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	6956344	USD
CY2016	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	13098086	USD
CY2017	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	13100041	USD
CY2018	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	12348890	USD
CY2016	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1663126	USD
CY2017	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1786070	USD
CY2018	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	1878010	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7159763	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7256046	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	7695712	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7149906	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7218686	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	7649025	shares
CY2018	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Business and Credit Concentrations</font><font style="font-family:inherit;font-size:10pt;font-style:italic;">—</font><font style="font-family:inherit;font-size:10pt;">The primary business of the Company is the distribution of natural gas to residential, commercial and industrial customers in its service territories.</font></div><div style="line-height:120%;padding-top:12px;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">No</font><font style="font-family:inherit;font-size:10pt;"> sales to individual customers accounted for more than </font><font style="font-family:inherit;font-size:10pt;">5%</font><font style="font-family:inherit;font-size:10pt;"> of total revenue in any period or amounted to more than </font><font style="font-family:inherit;font-size:10pt;">5%</font><font style="font-family:inherit;font-size:10pt;"> of total accounts receivable.</font></div><div style="line-height:120%;padding-top:12px;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Roanoke Gas currently holds the only franchises and certificates of public convenience and necessity to distribute natural gas in its service area. These franchises are effective through </font><font style="font-family:inherit;font-size:10pt;">January 1, 2036</font><font style="font-family:inherit;font-size:10pt;">. The Company's current certificates of public convenience and necessity in Virginia are exclusive and are intended for perpetual duration.</font></div><div style="line-height:120%;padding-top:12px;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Roanoke Gas is served directly by </font><font style="font-family:inherit;font-size:10pt;">two</font><font style="font-family:inherit;font-size:10pt;"> primary pipelines that provide all of the natural gas supplied to the Company’s customers. Depending upon weather conditions and the level of customer demand, failure of one or both of these transmission pipelines could have a major adverse impact on the Company.</font></div></div>
CY2018	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;padding-left:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain reclassifications have been made to the prior year income statements to be consistent with the current year presentation by moving cost of gas - utility and cost of sales - non utility under the operating expenses caption. This presentation makes the Company's income statement presentation consistent with industry peers.</font></div></div>
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;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
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0001069533-18-000048-index.html	Edgar Link	pending
0001069533-18-000048.txt	Edgar Link	pending
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Financial_Report.xlsx	Edgar Link	pending
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report.css	Edgar Link	pending
rgco-20180930.xml	Edgar Link	completed
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$RGCO
RGC RESOURCES INC Stock $rgco

2018 Form 10-K Financial Statement

#000106953318000048 Filed on December 03, 2018

Income Statement

Balance Sheet

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Facts In Submission

Files In Submission

$RGCO RGC RESOURCES INC Stock $rgco

2018 Form 10-K Financial Statement

#000106953318000048 Filed on December 03, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$RGCO
RGC RESOURCES INC Stock $rgco