Note 20 - Taxation (Detail) - Reconciliation of the provision for income taxes determined at the US federal corporate tax rate (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Pre-tax income	$ 4,386	$ 4,035
US federal rate	35.00%	35.00%
Income tax expense computed at U.S. federal rate	1,535	1,412
Rate differential for domestic earnings	(537)	(770)
Preferential tax treatments and tax holiday effects	(1,039)	(1,552)
Valuation allowance on deferred tax assets	512	1,921
Loss not recognized as deferred tax assets	3
Non-deductible expenses and non-taxable income	55	24
Effective income tax expense	$ 529	$ 1,035