Note 3 - Taxation (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Tax Benefit from Stock Options Exercised	$ 0	$ 77	$ 0
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	7,936	7,734
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	3	162	206
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	42	667	870
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	6,794
Deferred Tax Assets, Valuation Allowance	1,868	1,327	1,102	1,177
Fully Vested Options Expired Unexercised [Member]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	57	335
Restricted Stock [Member]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	$ 101	$ 0