Consolidated Statements of Cash Flows (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 3,761,777us-gaap_NetIncomeLoss	$ 6,671,279us-gaap_NetIncomeLoss	$ 3,719,317us-gaap_NetIncomeLoss
Less income from discontinued operations	1,032,611	819,138	523,829
Income from continuing operations	2,729,166	5,852,141	3,195,488
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	6,604,569	5,550,753	4,337,196
Accretion	51,466	57,912	161,298
Amortization of debt issuance costs	419,953us-gaap_AmortizationOfFinancingCosts	418,204us-gaap_AmortizationOfFinancingCosts	275,858us-gaap_AmortizationOfFinancingCosts
Provision for doubtful accounts	1,112,115us-gaap_ProvisionForDoubtfulAccounts	726,434us-gaap_ProvisionForDoubtfulAccounts	951,655us-gaap_ProvisionForDoubtfulAccounts
Stock based compensation	316,985us-gaap_ShareBasedCompensation	2,962us-gaap_ShareBasedCompensation	60,009us-gaap_ShareBasedCompensation
Gain on sale of marketable securities	(183,371)	0	0
Loss (gain) on sale of assets	(28,293)us-gaap_GainLossOnDispositionOfAssets	(158,320)us-gaap_GainLossOnDispositionOfAssets	61,495us-gaap_GainLossOnDispositionOfAssets
Loss from unconsolidated affiliate	351,724	5,007	8,620
Unrealized holding loss (gain) on contingent consideration	62,000	(1,565,000)	0
Change in fair value of derivative financial instruments	150,885	0	0
Investment tax credit	(21,062)us-gaap_InvestmentTaxCredit	(21,062)us-gaap_InvestmentTaxCredit	(21,062)us-gaap_InvestmentTaxCredit
Deferred income taxes	2,135,786us-gaap_DeferredIncomeTaxExpenseBenefit	4,024,683us-gaap_DeferredIncomeTaxExpenseBenefit	2,261,345us-gaap_DeferredIncomeTaxExpenseBenefit
Goodwill impairment	0us-gaap_GoodwillImpairmentLoss	725,744us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
Changes in assets and liabilities
Accounts receivable, including related parties	(891,338)	(2,187,452)	(3,667,888)
Unbilled gas	(480,942)	(3,009,029)	(569,950)
Natural gas inventory	(457,611)us-gaap_IncreaseDecreaseInInventories	(388,858)us-gaap_IncreaseDecreaseInInventories	1,700,367us-gaap_IncreaseDecreaseInInventories
Accounts payable, including related parties	1,817,098	3,111,116	907,843
Regulatory assets & liabilities	(1,938,386)	1,039,063	(258,212)
Prepayments and other	(24,243)	1,076,550	(1,372,244)
Other assets	234,751	(464,339)	1,006,239
Other liabilities	(815,380)	642,788	(1,435,500)
Net cash provided by operating activities of continuing operations	11,145,872	15,439,297	7,602,557
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(21,612,680)	(23,516,923)	(19,935,982)
Proceeds from sale of fixed assets	172,142	968,772	39,485
Proceeds from sale of marketable securities	421,875	0	0
Proceeds from note receivable	3,250	8,681	10,255
Purchase of Public Gas Company, Inc.	0	0	(1,551,477)
Cash acquired in acquisition	0us-gaap_CashAcquiredFromAcquisition	0us-gaap_CashAcquiredFromAcquisition	502us-gaap_CashAcquiredFromAcquisition
Investment in unconsolidated affiliate	0	(35,000)	0
Restricted cash - capital expenditures fund	57,441	1,264,624	(1,322,065)
Customer advances for construction	16,900	12,028	150,920
Contributions in aid of construction	2,262,047	1,105,974	54,532
Net cash used in investing activities of continuing operations	(18,679,025)	(20,191,844)	(22,553,830)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from lines of credit	24,850,000us-gaap_ProceedsFromLinesOfCredit	22,519,000us-gaap_ProceedsFromLinesOfCredit	51,390,754us-gaap_ProceedsFromLinesOfCredit
Repayments of lines of credit	(20,619,000)us-gaap_RepaymentsOfLinesOfCredit	(21,848,956)us-gaap_RepaymentsOfLinesOfCredit	(50,690,999)us-gaap_RepaymentsOfLinesOfCredit
Proceeds from notes payable	102,000us-gaap_ProceedsFromNotesPayable	0us-gaap_ProceedsFromNotesPayable	12,989,552us-gaap_ProceedsFromNotesPayable
Repayments of notes payable	(3,565,224)us-gaap_RepaymentsOfNotesPayable	(633,498)us-gaap_RepaymentsOfNotesPayable	(7,920)us-gaap_RepaymentsOfNotesPayable
Payments of capital lease obligations	(177,570)	(167,518)	0
Debt issuance costs	(111,275)us-gaap_PaymentsOfDebtIssuanceCosts	(7,607)us-gaap_PaymentsOfDebtIssuanceCosts	(1,204,987)us-gaap_PaymentsOfDebtIssuanceCosts
Proceeds from issuance of common shares	0	16,721,104	0
Exercise of stock options	45,762	159,500	0
Restricted cash - debt service fund	131,864	748,781	(878,875)
Dividends paid	(5,659,098)us-gaap_PaymentsOfDividendsCommonStock	(5,005,827)us-gaap_PaymentsOfDividendsCommonStock	(4,432,920)us-gaap_PaymentsOfDividendsCommonStock
Net cash provided by (used in) financing activities of continuing operations	(5,002,541)	12,484,979	7,164,605
DISCONTINUED OPERATIONS
Operating cash flows	1,924,330	658,105	883,724
Investing cash flows	(511,434)	1,738,076	(698,503)
Financing cash flows	(32,473)	(590,059)	401,000
Net cash provided by discontinued operations	1,380,423	1,806,122	586,221
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(11,155,271)	9,538,554	(7,200,447)
Cash and cash equivalents, beginning of period	12,741,197	3,202,643	10,403,090
CASH AND CASH EQUIVALENTS, END OF PERIOD	1,585,926	12,741,197	3,202,643
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash paid for interest	2,730,385us-gaap_InterestPaid	2,806,051us-gaap_InterestPaid	2,286,902us-gaap_InterestPaid
Cash refunded for income taxes, net	(233,740)us-gaap_IncomeTaxesPaidNet	(4,050)us-gaap_IncomeTaxesPaidNet	(989,503)us-gaap_IncomeTaxesPaidNet
NONCASH INVESTING AND FINANCING ACTIVITIES
Assets acquired under build-to-suit agreement	5,597,314	0	0
Capital expenditures included in accounts payable	1,047,211	1,798,014	745,402
Restricted cash received from customer as security deposit	949,540	0	0
Capital assets exchanged to settle payables	321,971	82,584	0
Capital assets acquired through trade-in	103,154	23,500	0
Capital additions acquired through debt	25,543
Capitalized interest	24,965	6,003	21,147
Customer advances for construction moved to contribution in aid of construction	10,483	16,364	0
Customer relationships acquired from JDOG Marketing purchase	0	2,800,000	0
Contingent consideration issued to purchase JDOG Marketing	0	2,250,000	0
Goodwill acquired from JDOG Marketing purchase	0	2,101,744	0
Accrued dividends	0	470,326	376,639
Note receivable effectively settled in JDOG Marketing acquisition	0	32,145	0
Plant, property and equipment acquired from JDOG Marketing purchase	0	21,600	0
John D. Oil And Gas Marketing [Member]
NONCASH INVESTING AND FINANCING ACTIVITIES
Shares issued to purchase	0	2,641,199	0
Loring Pipeline [Member]
NONCASH INVESTING AND FINANCING ACTIVITIES
Shares issued to purchase	$ 0	$ 0	$ 2,250,004

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (j)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

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-Number 210

-Section 08

-Paragraph f

-Article 4

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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Balance Type:	credit
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- Definition

The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

+ References

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Period Type:	duration

- Definition

The cash outflow for a borrowing supported by a written promise to pay an obligation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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- Definition

The fair value of stock issued in noncash financing activities.

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Balance Type:	credit
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