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Note 3 - Taxation (Detail) - Valuation Allowances (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Valuation Allowance for Deferred Tax Assets Beginning Balance	$ 1,327	$ 1,102	$ 1,177
Valuation Allowance for Deferred Tax Assets Other Changes	541	225	(75)
Valuation Allowance for Deferred Tax Assets Ending Balance	$ 1,868	$ 1,327	$ 1,102

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.