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Basis of Presentation - Additional Information (Detail) (USD $)			12 Months Ended							12 Months Ended			12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2012 Paid in Capital [Member]	Dec. 31, 2011 Paid in Capital [Member]	Dec. 31, 2012 Rantoul Partners [Member]	Dec. 31, 2011 Rantoul Partners [Member]	Dec. 31, 2012 Rantoul Partners [Member] Working Interest [Member]	Dec. 31, 2011 Rantoul Partners [Member] Oil Properties [Member]	Dec. 31, 2012 Rantoul Partners [Member] Oil Properties [Member]	Dec. 31, 2012 Noncontrolling Entities [Member] Rantoul Partners [Member]	Dec. 31, 2011 Noncontrolling Entities [Member] Rantoul Partners [Member]	Dec. 31, 2011 Noncontrolling Entities [Member] Rantoul Partners [Member] Oil Properties [Member]	Dec. 31, 2012 Noncontrolling Entities [Member] Rantoul Partners [Member] Oil Properties [Member] Working Interest [Member]
Contribution of Property								$ 2,282,918
Equity Method Investment, Ownership Percentage					75.00%	100.00%	75.00%			25.00%	11.75%
Equity Method Investment Sold Percentage						11.75%				13.25%
Number Of Investors										2	2
Proceeds from Sale of Interest in Partnership Unit										2,650,000	2,350,000
Assets	68,262,882	37,049,272							1,229,541			544,368
Accretion to Enerjex Due to Sale of Non Controlling Interest in Subsidiary			1,420,459	1,805,632
Proceeds From Liquidation Of Partnership Unit Percentage					75.00%		75.00%			25.00%			25.00%
Proceeds From Liquidation Of Partnership Unit					$ 4,792,380					$ 1,597,461

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The percentage of proceeds from the liquidation of a unit of partnership.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

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