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5. Net income per ordinary share (Tables) | 12 Months Ended
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Dec. 31, 2012
Net Income Per Ordinary Share Tables |
Basic and diluted number of shares |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | Number of shares |
Weighted average number of ordinary shares for the purposes of basic net income per share |  |  | 2,070,685 |  |  |  | 2,087,922 |  |  |  | 2,099,894 |
Effect of dilutive potential ordinary shares: Stock options |  |  | 5,630 |  |  |  | 14,277 |  |  |  | 43,481 |
Weighted average number of ordinary shares for the purposes of diluted net income per share |  |  | 2,076,315 |  |  |  | 2,102,199 |  |  |  | 2,143,375 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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