INCOME TAXES - Reconciliation Between the Benefit (Provision) for Income Taxes at Statutory Rate and Effective Tax Rate (Detail)	12 Months Ended
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%)

Effective Income Tax Rate Reconciliation, FTC Conversion, Percent

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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.

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Effective Income Tax Rate Reconciliation, Loss On Foreign Share Transfer

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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.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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 attributable to changes in the valuation allowance for deferred tax assets.

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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 statutory income tax expense (benefit) outside of the country of domicile.

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Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for share-based payment arrangement.

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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 attributable to revisions of previously reported income tax expense.

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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 attributable to tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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Percentage of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to Tax Cuts and Jobs Act.

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