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Condensed Consolidated Statement Of Shareholders' Equity (USD $)
In Thousands, except Share data
Common Shares
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Treasury Shares
Total
Balances - value at Dec. 31, 2010$ 6,109$ 707,138$ 413,212$ (6,962)$ (272)$ 1,119,225
Balances - shares at Dec. 31, 201061,085    61,085
Stock-based compensation expense 4,102   4,102
Shares repurchased and retired - shares(3,488)     
Shares repurchased and retired - value(349)(37,483)(15,356)  (53,188)
Stock options exercised - shares144    144,000
Stock options exercised - value141,592   1,606
Issuance of restricted shares, net of forfeitures - shares183     
Issuance of restricted shares, net of forfeitures - value18(18)    
Excess tax benefit of stock-based compensation 121   121
Comprehensive income  49,081(1,999) 47,082
Balances - value at Sep. 30, 2011$ 5,792$ 675,452$ 446,937$ (8,961)$ (272)$ 1,118,948
Balances - shares at Sep. 30, 201157,924    57,924