Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Allowance for doubtful accounts (in Dollars)	$ 87,000	$ 74,000	[1]
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01	[1]
Common stock, shares authorized	50,000,000	50,000,000	[1]
Common stock, shares outstanding	19,525,858	20,044,457	[1]

[1] The condensed consolidated balance sheet as of December 31, 2012 has been prepared using information from the audited consolidated balance sheet as of that date.