Consolidated Balance Sheets (Parenthetical) (USD $)	Apr. 01, 2013	Dec. 31, 2012
Consolidated Balance Sheets
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	18,303,467	18,278,192
Treasury stock, shares	59,886	59,886