Discontinued Operations - Schedule of Revenue and Income from Discontinued Operations Associated with Independence (Detail) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Pretax income (loss) from discontinued operations
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	$ 67,535	$ (149,550)	$ 925,170	$ 598,153
Income tax expense (benefit)	(32,710)	(4,742)	(343,518)	(196,091)
Income (loss) from discontiuned operations, net of tax	34,825	(154,292)	581,652	402,062
Basic and diluted income (loss) from discontiuned operations per share
Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share	$ 0.01	$ (0.02)	$ 0.05	$ 0.05
Energy West Wyoming [Member]
Disposal Group, Including Discontinued Operation, Revenue	1,644,296	1,457,619	6,891,206	5,869,145
Pretax income (loss) from discontinued operations
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	5,763	(18,991)	775,630	776,091
Basic and diluted income (loss) from discontiuned operations per share
Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share	$ 0.00	$ (0.01)	$ 0.05	$ 0.06
Shoshone and Glacier Pipeline [Member]
Disposal Group, Including Discontinued Operation, Revenue	97,195	99,290	294,071	302,609
Pretax income (loss) from discontinued operations
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	66,209	63,909	191,745	186,801
Basic and diluted income (loss) from discontiuned operations per share
Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Other Discontinued Operations [Member]
Pretax income (loss) from discontinued operations
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax	$ (4,437)	$ (194,468)	$ (42,205)	$ (364,739)
Basic and diluted income (loss) from discontiuned operations per share
Income Loss From Discontinued Operations Net Of Tax Per Basic And Diluted Share	$ 0.00	$ (0.02)	$ (0.01)	$ (0.02)

Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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