CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 28, 2013	Dec. 29, 2012
Statement of Financial Position [Abstract]
Accounts receivable, allowance	$ 281,000	$ 311,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	3,000	3,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	120,000,000	120,000,000
Common stock, issued	77,937,692	75,979,695
Common stock, outstanding	62,386,504	63,835,508
Treasury stock, shares	11,517,640	9,861,139

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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