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INCOME TAXES - NOLS (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Operating Loss Carryforwards [Line Items] |  |
Deferred Tax Assets, Operating Loss Carryforwards | $ 15,557 | $ 19,128
Canada Revenue Agency [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | 6,400 | 10,400
State and Local Jurisdiction |  |
Operating Loss Carryforwards [Line Items] |  |
Deferred Tax Assets, Operating Loss Carryforwards | 3,200 | 3,100
Foreign Tax Authority |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | 7,200 | 7,000
Operating Loss Carryforwards, Valuation Allowance | $ 4,100 | $ 2,500
Minimum | Canada Revenue Agency [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards, Expiration Date | Jan. 01, 2036 |
Minimum | State and Local Jurisdiction |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards, Expiration Date | Jan. 01, 2022 |
Minimum | Foreign Tax Authority |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards, Expiration Date | Jan. 01, 2019 |
Maximum | Canada Revenue Agency [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards, Expiration Date | Jan. 01, 2037 |
Maximum | State and Local Jurisdiction |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards, Expiration Date | Jan. 01, 2037 |
Maximum | Foreign Tax Authority |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards, Expiration Date | Dec. 31, 2028 |

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