Area Of Land Sold

No definition available.

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- Definition

Equity Method Investments Net Profit Interest Percentage

+ References

No definition available.

+ Details

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

Amount after tax of income (loss) attributable to redeemable noncontrolling shareholder, unit holder, partner, or other equity holder of a joint venture.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.19)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Subsequent Events - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended	0 Months Ended
	Dec. 31, 2014 acre	Apr. 03, 2015 acre	Apr. 27, 2015	May 21, 2014
Subsequent Event [Line Items]
Acres of Land Sold	5,159teng_AreaOfLandSold
Contingent borrowing capacity	$ 47.5
Current borrowing capacity	102.5			102.5
Net profit interest amended percentage			2.53%
Subsequent Event [Member]
Subsequent Event [Line Items]
Acres of Land Sold		5,159
Expects to receive approximately from sale of certain interests		47.0
Subsequent Event [Member] \| Tranche B [Member]
Subsequent Event [Line Items]
Contingent borrowing capacity			47.5
Current borrowing capacity			10.0
Subsequent Event [Member] \| American Shale [Member]
Subsequent Event [Line Items]
Agreed amount to pay dues			13.8
Subsequent Event [Member] \| Scenario, Forecast [Member]
Subsequent Event [Line Items]
Expects to receive approximately from sale of certain interests		$ 71.3