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Note 4 - Cash and cash equivalent (Tables) | 3 Months Ended
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Mar. 31, 2013
Schedule of Cash and Cash Equivalents [Table Text Block] |
|  | March 31, 2013 |  |  | December 31, 2012 |
|  | US$(’000) |  |  | US$(’000) |
|  | (Unaudited) |  |  |  |
Cash |  |  | 801 |  |  |  | 893 |
Bank deposit |  |  | 2,991 |  |  |  | 4,590 |
|  |  | 3,792 |  |  |  | 5,483 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration