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Shares shown as issued reflect shares issued to certain officers whose employment with the Company terminated prior to the end of the performance period and the determination of actual performance.2During 2010, 336,865 shares were awarded to current officers for the performance period that ended December 2009.3During 2011, 135,712 shares were awarded to current officers for the performance period that ended December 2010102Performance-Based Share Awards Table (Parenthetical) (Detail)UnKnownNoRoundingUnKnownUnKnownfalsetrue