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Schedule of Summary of Mineral Properties (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Mineral Properties total | $ 91,000 | $ 91,031
Uranerz ISR properties [Member] |  |
Mineral Properties total | 36,065 | 36,096
In-situ Recovery total [Member] |  |
Mineral Properties total | 36,065 | 36,096
Sheep Mountain [Member] |  |
Mineral Properties total | 34,183 | 34,183
Roca Honda [Member] |  |
Mineral Properties total | 19,465 | 19,465
Other [Member] |  |
Mineral Properties total | 1,287 | 1,287
Conventional total [Member] |  |
Mineral Properties total | $ 54,935 | $ 54,935

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- Definition Mineral properties, net of adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=56951519&loc=d3e64895-109465 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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