Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, unless otherwise specified	Jan. 03, 2014	Dec. 28, 2012
Preferred stock, no par value	$ 0	$ 0
Preferred stock, shares authorized	3,000	3,000
Preferred stock, shares outstanding	0	0
Common stock, no par value	$ 0	$ 0
Common stock, shares authorized	360,000	360,000
Common stock, shares issued	258,711	254,486
Common stock, shares outstanding	258,711	254,486
Allowance for Doubtful Accounts [Member]
Accounts receivable, allowance for doubtful accounts	$ 6,317	$ 6,318
Allowance for Sales Returns [Member]
Accounts receivable, allowance for doubtful accounts	$ 3,190	$ 2,763