CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 29, 2012	Dec. 31, 2011
Accounts receivable, allowances for doubtful receivables	$ 318	$ 470
Preferred stock, par value
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding
Common stock, par value	$ 0.20	$ 0.20
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	11,441,666	11,441,666
Common stock in treasury, shares	352,467	352,467