Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Jan. 01, 2011
Current Assets
Accounts receivable, allowances	$ 423,000	$ 519,000
Shareholders' Equity
Preferred Stock, shares unissued (in shares)	1,000,000	1,000,000
Preferred Stock, no par value (in dollars per share)	$ 0	$ 0
Preferred Stock, shares authorized (in shares)	1,000,000	1,000,000
Common Stock, no par value (in dollars per share)	$ 0	$ 0
Common Stock, shares authorized (in shares)	50,000,000	50,000,000
Common Stock, shares issued (in shares)	8,908,607	8,852,762
Treasury Stock, shares (in shares)	2,694,729	2,694,729