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Note 7 - Income Tax - Summary of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Line Items [Line Items]
Current tax	$ 343,104	$ 184,016	$ 174,410
Deferred tax	(113,897)	(100,432)	(132,969)
	229,207	83,584	41,441
From discontinued operations		(100,720)	(24,339)
	$ 229,207	$ (17,136)	$ 17,102

X

- Definition

The amount of income taxes payable (recoverable) in respect of the taxable profit (tax loss) for a period.

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- Definition

The amount of tax expense (income) relating to changes in deferred tax liabilities and deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities]

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The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax that relate to continuing operations. [Refer: Continuing operations [member]; Current tax expense (income); Deferred tax expense (income)]

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The amount of income taxes accrued.

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The tax expense relating to the profit (loss) arising from ordinary activities of discontinued operations and on the tax expense relating to the gain (loss) on discontinuance when operations are discontinued.

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