Note 3 - Summary of significant accounting policies (Tables)

9 Months Ended

Sep. 30, 2013

Balance Sheet Items Except Equity Accounts [Member]

Note 3 - Summary of significant accounting policies (Tables) [Line Items]

Foreign Currency Exchange Rates [Table Text Block]

	September 30, 2013	December 31, 2012
Balance sheet items, except for equity accounts	6.1514	6.3161

Items In Income Statements And Comprehensive Income And Statements Of Cash Flows Nine Months Ended [Member]

Note 3 - Summary of significant accounting policies (Tables) [Line Items]

Foreign Currency Exchange Rates [Table Text Block]

	Nine Months Ended September 30,
	2013	2012
Items in the statements of income and comprehensive income, and statements of cash flows	6.2215	6.3275

Items In Income Statements And Comprehensive Income And Statements Of Cash Flows Three Months Ended [Member]

Note 3 - Summary of significant accounting policies (Tables) [Line Items]

Foreign Currency Exchange Rates [Table Text Block]

	Three Months Ended September 30,
	2013	2012
Items in the statements of income and comprehensive income, and statements of cash flows	6.1695	6.3313