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22. SUPPLEMENTAL FINANCIAL INFORMATION (Details 4) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Disclosure of defined benefit plans [line items] |  |
Employee benefit expense | $ (7,218) | $ (6,856)
Salaries and short-term employee benefits |  |
Disclosure of defined benefit plans [line items] |  |
Employee benefit expense | (6,229) | (6,200)
Share-based compensation |  |
Disclosure of defined benefit plans [line items] |  |
Employee benefit expense | (969) | (341)
Termination benefits |  |
Disclosure of defined benefit plans [line items] |  |
Employee benefit expense | (20) | (46)
Discontinued operations |  |
Disclosure of defined benefit plans [line items] |  |
Employee benefit expense | $ 0 | $ (269)

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