CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 28, 2013	Dec. 31, 2012
Statement of financial position
Preferred Stock, par value	$ 0	$ 0
Preferred Stock, shares authorized	10,000,000	10,000,000
Preferred Stock, shares outstanding	0	0
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
Accounts receivable, allowances for doubtful receivables	$ 214	$ 324
Common stock in treasury, shares	352,467	352,467