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Subsequent Events - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended
	Jan. 01, 2013	Dec. 31, 2012	Jan. 03, 2013 Subsequent Event Stock Options Employees [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, Share-based Compensation, Gross			35,000
Warrant Issued To Purchase Common Stock	300,000
Investment Warrants, Exercise Price	$ 0.70
Stock Issued During Period, Value, Issued for Services		$ 130,000

X

- Definition

Warrant issued to purchase common stock during period

+ References

No definition available.

+ Details

Name:	enrj_WarrantIssuedToPurchaseCommonStock
Namespace Prefix:	enrj_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Exercise price of the warrants.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column A

+ Details

Name:	invest_InvestmentWarrantsExercisePrice
Namespace Prefix:	invest_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodValueIssuedForServices
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration