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CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
CONSOLIDATED STATEMENTS OF EQUITY |  |  |
Reissuance of shares of common stock from treasury under Directors' Remuneration Plan |  |  | 790
Issuance of shares of common stock upon exercise of stock options | 62,575 | 51,602 | 85,500
Purchase of shares of common stock | 9,175 | 5,470 | 1,331
Non-controlling interest in equity acquired, net of tax |  | $ 2,280 |
Other comprehensive income, net of tax expense (benefit) | $ 1,315 | $ (1,327) | $ (1,236)

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