Represents the additional ownership percentage in Joint Venture.

No definition available.

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- Definition

Represents the Additional payments In Joint Venture.

+ References

No definition available.

+ Details

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- Definition

Represents the extension period period to acquire additional ownership interest.

+ References

No definition available.

+ Details

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- Definition

Represents the number of shares received in joint venture transaction.

+ References

No definition available.

+ Details

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- Definition

Represents the ownership percentage in a property or project.

+ References

No definition available.

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- Definition

Line items represent reporting 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 12
-Sentence Column A

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- Definition

This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

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- Definition

Amount of equity securities categorized neither as held-to-maturity nor as trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558

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- Definition

Amortized cost of short-term investments in debt and equity securities and other forms of securities that provide ownership interests classified as available-for-sale.

+ References

No definition available.

+ Details

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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- Definition

Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

+ 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 210.5-02.2)
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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Subparagraph g
-Article 7

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Cash and Cash Equivalents and Short-term Investments (Details) $ in Thousands		3 Months Ended
	Mar. 24, 2015 USD ($)	Mar. 31, 2015 shares	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)
Investments:
Available for sale common stock			$ 199	$ 199
Total available for sale			199	199
Total short term			199	199
Available for sale common stock			269	72
Total available for sale.			269	72
Total short term			$ 269	72
Junior Mining Company
Investments:
Shares received \| shares		5,000,000
Ownership interest in outstanding common stock (as a percent)			9.00%
Carrying Value.
Investments:
Available for sale common stock			$ 269	72
Total available for sale.			269	72
Total short term			$ 269	$ 72
San Diego
Investments:
Extension period	2 years
Additional interest in joint venture	10.00%
Additional payments in joint venture	$ 800
San Diego \| Junior Mining Company
Investments:
Ownership in property (as a percent)		50