Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 29, 2013		Dec. 31, 2012
Statement Of Financial Position [Abstract]
Reserves for accounts receivable	$ 1,346		$ 1,131
Common stock, par value	$ 0.002		$ 0.002
Common stock, shares authorized	140,000		140,000
Common stock, shares issued	87,281	[1]	86,110	[1]

[1] Prior period amounts have been adjusted to reflect the two-for-one stock split effected in the form of a stock dividend which occurred in September 2013.