Note 26 - Share-based compensation expenses (Detail) - Options issued and outstanding (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2013
Options Outstanding [Member] \| Begining Balance [Member]
Balance, December 31, 2012 (audited)	939,440
Balance, December 31, 2012 (audited)	8 years 186 days
Balance, December 31, 2012 (audited) (in Dollars per share)	$ 1.42
Balance, March 31, 2013 (unaudited)	8 years 186 days
Options Outstanding [Member] \| Ending Balance [Member]
Balance, December 31, 2012 (audited)	8 years 94 days
Balance, March 31, 2013 (unaudited)	939,440
Balance, March 31, 2013 (unaudited)	8 years 94 days
Balance, March 31, 2013 (unaudited) (in Dollars per share)	$ 1.42
Options Exercisable [Member] \| Begining Balance [Member]
Balance, December 31, 2012 (audited)	939,440
Balance, December 31, 2012 (audited)	8 years 186 days
Balance, December 31, 2012 (audited) (in Dollars per share)	$ 1.42
Balance, March 31, 2013 (unaudited)	8 years 186 days
Options Exercisable [Member] \| Ending Balance [Member]
Balance, December 31, 2012 (audited)	8 years 94 days
Balance, March 31, 2013 (unaudited)	939,440
Balance, March 31, 2013 (unaudited)	8 years 94 days
Balance, March 31, 2013 (unaudited) (in Dollars per share)	$ 1.42

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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