Note 5 - Short-term Investments (Details) In Thousands, unless otherwise specified	0 Months Ended
	Nov. 24, 2014	Nov. 13, 2014	Dec. 31, 2014 USD ($)	Dec. 03, 2014 USD ($)	Dec. 03, 2014 CNY	Nov. 24, 2014 USD ($)	Nov. 24, 2014 CNY	Nov. 13, 2014 USD ($)	Nov. 13, 2014 CNY
Investments, All Other Investments [Abstract]
Short-term Investments			$ 27,354			$ 19,309	120,000	$ 8,045	50,000
Short-term Investment, Estimated Rate of Return	4.50%	5.00%
Short-term Debt				$ 5,632	35,000