Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 28, 2013	Dec. 29, 2012
Current Assets
Accounts receivable, allowances	$ 410,000	$ 487,000
Shareholders' Equity
Voting Preferred Stock, no par value (in dollars per share)	$ 0	$ 0
Voting Preferred Stock, shares authorized (in shares)	1,000,000	1,000,000
Nonvoting Preferred Stock, no par value (in dollars per share)	$ 0	$ 0
Nonvoting 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)	8,916,897	8,914,478
Treasury Stock, shares (in shares)	2,694,729	2,694,729