CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 29, 2012	Dec. 31, 2011
CONSOLIDATED CONDENSED BALANCE SHEETS
Receivables, allowance for doubtful accounts (in dollars)	$ 18,100	$ 15,100
Long-term investments, allowance for losses (in dollars)	$ 1,543,800	$ 883,100
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	4,993,927	4,987,643
Common stock, shares outstanding	4,993,927	4,987,643