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INTANGIBLE ASSETS | 3 Months Ended
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Mar. 31, 2016
INTANGIBLE ASSETS [Text Block] | 5. INTANGIBLE ASSETS The following is a summary of changes in intangible assets related to favorable sales contracts acquired in business combinations:
|  | March 31, |  |  | December 31, |
Sales Contracts |  | 2016 |  |  | 2015 |
Cost |  |  |  |  |  |
Balance at beginning of period | $ | 26,451 |  | $ | 15,851 |
Sales contracts acquired in the acquisition of Uranerz Energy Corporation |  | - |  |  | 10,600 |
Balance, end of period |  | 26,451 |  |  | 26,451 |
Accumulated amortization, beginning of period |  | 17,334 |  |  | 11,970 |
Amortization of sales contracts |  | 218 |  |  | 5,364 |
Accumulated amortization, end of period |  | 17,552 |  |  | 17,334 |
Net book value | $ | 8,899 |  | $ | 9,117 |

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16373-109275 + Details
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