The percentage of credit adjusted risk free rate related to assets retirement obligation.

No definition available.

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- Definition

The percentage of inflation rate related to assets retirement obligation.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The company paid long term debt premium.

+ References

No definition available.

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- Definition

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

+ Details

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12069-110248

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- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ 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 210.5-02.8,17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Asset Retirement Obligation and Financial Reclamation Assurance (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2017	Dec. 31, 2015
Asset Retirement Obligations [Line Items]
Asset Retirement Obligation	$ 1,366	$ 1,719	$ 978
Asset Retirement Obligation, Credit Adjusted Risk Free Rate		8.70%
Asset Retirement Obligation, Inflation Rate		2.45%
Long Term Debt Premium Paid	100
Surety Bond [Member]
Asset Retirement Obligations [Line Items]
Guarantor Obligations, Current Carrying Value	3,000
Bureau of Land Management [Member]
Asset Retirement Obligations [Line Items]
Security Deposit	1,500	$ 1,500
Lahontan Regional Water Quality Control Board [Member]
Asset Retirement Obligations [Line Items]
Security Deposit	1,200	1,200
Regional Board [Member]
Asset Retirement Obligations [Line Items]
Security Deposit	$ 300	$ 300