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INCOME TAXES - Schedule of Capital Losses and Net Operating Losses (Details) $ in Thousands | Dec. 31, 2017 USD ($)
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Operating Loss Carryforwards [Line Items] |
Net operating losses expected to expire | $ 75,000
Capital losses | United States |
Operating Loss Carryforwards [Line Items] |
Amount | 54,399
Net operating losses | United States |
Operating Loss Carryforwards [Line Items] |
Amount | 250,518
CANADA | Non-capital losses | Canada |
Operating Loss Carryforwards [Line Items] |
Amount | 31,159
CANADA | Capital losses | Canada |
Operating Loss Carryforwards [Line Items] |
Amount | 3,285
CANADA | Investment Tax Credits | Canada |
Operating Loss Carryforwards [Line Items] |
Amount | $ 1,211

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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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