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CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Common stock, par value (in dollars per share) | $ 0.10 | $ 0.10
Common stock, shares authorized (in shares) | 280,000,000 | 280,000,000
Common stock, shares issued (in shares) | 145,874,000 | 145,871,000
Common stock, shares outstanding (in shares) | 140,821,000 | 143,486,000
Treasury stock shares (in shares) | 5,053,000 | 2,385,000
Tax effect of accumulated other comprehensive income | $ 15 | $ 0

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