Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Accounts receivable, allowance for doubtful accounts (in Dollars)	$ 725,000	$ 758,000
Preferred stock, par value (in Dollars per share)	$ 1	$ 1
Preferred stock, shares authorized	300,000	300,000
Preferred stock, shares issued	0	0
Common stock par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	6,115,907	5,993,062
Common stock, shares outstanding	6,115,907	5,993,062