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Note 7 - Other receivables, net (Detail)	3 Months Ended	12 Months Ended
Note 7 - Other receivables, net (Detail)	Mar. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2012 CNY	Dec. 31, 2011 USD ($)	Dec. 31, 2011 CNY	Mar. 31, 2013 CNY
Loans and Leases Receivable, Net Amount (in Yuan Renminbi)	$ 3,979,878					25,000,000
Loans and Leases Receivable, Net Amount	3,979,878					25,000,000
Proceeds from Collection of Loans Receivable (in Yuan Renminbi)		1,591,951	10,000,000	1,591,951	10,000,000
Proceeds from Collection of Loans Receivable		1,591,951	10,000,000	1,591,951	10,000,000
Allowance for Doubtful Other Receivables, Current	420,000	158,000
Provision for Doubtful Accounts	$ 260,000

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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- Definition

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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