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OTHER INCOME (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2020 | Sep. 30, 2019
Debt Instrument [Line Items] |  |  |  |  |
Costs incurred |  |  |  | $ 500 |
Other income | $ 2,090 | $ 4,773 |  | 6,071 | $ 6,283
Paycheck Protection Program |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount of relief secured | 1,900 |  | $ 1,900 | 1,900 |
Period over which paychecks protection ("PPP") program funds are fully forgiven so long eligible expenditures are incurred |  |  | 168 days |  |
Canadian Emergency Wage Subsidy |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount of relief secured | $ 3,400 |  | $ 3,400 | $ 3,400 |

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