Note 20 - Deferred Income Tax - Net Deferred Tax Liabilities (Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement Line Items [Line Items]
Deferred tax assets	$ (153,532)	$ (144,613)
Deferred tax liabilities	457,970	550,657
	$ 304,438	$ 406,044	$ 549,619

The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]

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