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Income Taxes - Summary of income tax provision (recovery) (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Current | $ (11) | $ 430 | $ 29
Deferred | (5,855) | (2,730) | (792)
Provision For (Recovery Of) Income Taxes | (5,866) | (2,300) | (763)
Federal [member] |  |  |
Current | 0 |  | (232)
Deferred | (5,922) | (1,786) | (1,044)
Provision For (Recovery Of) Income Taxes | (5,922) | (1,786) | (1,276)
State [member] |  |  |
Current | 8 | 8 | 24
Deferred | (751) | (187) | (120)
Provision For (Recovery Of) Income Taxes | (743) | (179) | (96)
Foreign [member] |  |  |
Current | (19) | 422 | 237
Deferred | 818 | (757) | 372
Provision For (Recovery Of) Income Taxes | $ 799 | $ (335) | $ 609

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