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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares | Mar. 27, 2021 | Dec. 26, 2020
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Statement Of Financial Position [Abstract] |  |
Common stock, authorized | 80,000,000 | 80,000,000
Common stock, par value | $ 0.01 | $ 0.01
Common stock, issued shares | 64,604,629 | 62,551,255
Common stock, shares, outstanding | 54,747,436 | 52,694,062
Treasury stock, shares | 9,857,193 | 9,857,193

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