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INCOME TAXES - Reconciliation Between the Benefit (Provision) for Income Taxes at Statutory Rate and Effective Tax Rate (Detail) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
Federal statutory tax rate | 21.00% | 21.00% | 35.00%
Foreign withholding | (0.30%) | 0.10% | (0.20%)
Stock compensation expense | (11.30%) | (1.00%) | (2.00%)
Foreign rate differential | (2.60%) | (1.50%) | (17.00%)
Prior year true-up items | 0.20% | 0.00% | (0.10%)
Tax reserves | (2.10%) | (1.30%) | (0.10%)
Loss on expiration of capital loss carryover | 0.00% | 1.10% | 0.00%
Credits | 0.10% | (0.10%) | 0.40%
Other | (1.60%) | 0.90% | 0.00%
FTC conversion true up | (5.90%) | 0.00% | 0.00%
2017 Tax Act impact | 0.000 | 0.011 | (0.287)
Valuation allowance | 0.10% | (19.60%) | 11.60%
Effective tax rate | (2.40%) | 0.70% | (1.10%)

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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to Foreign Withholding which can be suitable for both positive as well as negative value. + References No definition available. + Details
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- Definition Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to Tax Reserves which can be suitable for both positive as well as negative value. + References No definition available. + Details
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