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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2013
Adjustments Resulting From Foreign Currency Translations | Amounts credited or charged to the statement of operations for the years ended December 31, 2013, December 31, 2012 and December 31, 2011 were as follows:
|  | Year ended December 31, |
|  | (in thousands) |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Amounts (credited)/charged |  | $ | (1,233 | ) |  | $ | (1,231 | ) |  | $ | 391 |
Estimated Useful Lives of Assets | Depreciation of property, plant and equipment is computed using the straight line method based on the estimated useful lives of the assets as listed below:
|  | Years
Building |  | 40
Office furniture and fixtures |  | 8
Laboratory equipment |  | 5
Motor vehicles |  | 5
Computer equipment and software |  | 2-8
Reconciliation of Number of Shares Used in Computation of Basic and Diluted Net Income Per Ordinary Share | The reconciliation of the number of shares used in the computation of basic and diluted net income per ordinary share is as follows:
|  | Year Ended December 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Weighted average number of ordinary shares outstanding for basic net income per ordinary share |  |  | 60,907,274 |  |  |  | 59,968,174 |  |  |  | 60,379,338 |
Effect of dilutive share options outstanding |  |  | 1,345,977 |  |  |  | 482,532 |  |  |  | 691,348 |
Weighted average number of ordinary shares outstanding for diluted net income per ordinary share |  |  | 62,253,251 |  |  |  | 60,450,706 |  |  |  | 61,070,686 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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