Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Consolidated Balance Sheets [Abstract]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000	50,000
Common stock, shares issued	14,940	15,985
Common stock, shares outstanding	14,940	15,985