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Assets Held for Sale (Details Narrative) - USD ($) $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Oct. 21, 2016 | Apr. 07, 2016 | Dec. 31, 2016 | Dec. 31, 2015
Liabilities held for sale |  |  | $ (105) | $ (105)
Laramide Resources Ltd [Member] |  |  |  |
Proceeds from sale properties |  | $ 2,500 |  |
Paid in advance | $ 250 |  |  |
Number of common stock and warrants issued during the period |  | 500 |  |
Promissory note |  | $ 5,000 |  |
Note term |  | 3 years |  |
Note initial interest rate |  | 5.00% |  |
Note interest rate increases |  | 10.00% |  |
Note payable and due date description |  | Principal payments of approximately $1.5 million are due and payable on January 5 in each of 2018, 2019 and $2.0 million on January 5, 2020. |  |
Note principal payments |  | $ 1,500 |  |
Laramide Resources Ltd [Member] | January 5, 2020 [Member] |  |  |  |
Note principal payments |  |  | $ 2,000 |
Laramide Resources Ltd [Member] | January 5, 2018 [Member] |  |  |  |
Percentage of NSR royalty retained during the period |  |  | 4.00% |
Repurchased of royalty |  |  | $ 4,950 |
Laramide's La Sal [Member] |  |  |  |
Option to purchase |  |  | 3,000 |
La Jara Mesa [Member] |  |  |  |
Option to purchase |  |  | 5,000 |
Energy Fuels Inc [Member] |  |  |  |
Assets held-for-sale |  |  |  | $ 2,100
Crownpoint Project [Member] |  |  |  |
Liabilities held for sale |  |  | 105 |
Royalty obligation payable |  |  | $ 450 |

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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(13)) -URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount classified as liabilities attributable to disposal group held for sale or disposed of. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e1107-107759 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65878427&loc=SL51721533-107759 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 + Details
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