Note 18 - Taxation - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Tax effect of net operating losses carried forward	$ 7,882	$ 7,657
Bad debts provision	1,045	879
Valuation allowance	(8,250)	(7,178)
Total deferred tax assets, net	$ 677	$ 1,358

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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