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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2012	Dec. 31, 2011
Accounts receivable, allowance	$ 550	$ 557
Common shares, no par value
Common shares, Issued	33,599	33,478
Common shares, outstanding	33,599	33,478

Total number of shares of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares represent the ownership interest of the common shareholders. Shares outstanding equals shares issued minus shares held in treasury and other adjustments, if any.

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