Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Accounts receivable, allowance (in Dollars)	$ 368,000	$ 586,000
Convertible preferred stock par value (in Dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock authorized	5,000,000	5,000,000
Common stock par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock shares issued	45,462,637	44,910,034
Common stock, shares outstanding	45,462,637	44,910,034
Common stock shares authorized	100,000,000	100,000,000
Series A-1 Preferred Stock [Member]
Convertible preferred stock par value (in Dollars per share)	$ 0.001	$ 0.001
Convertible preferred stock authorized	1,000,000	1,000,000
Convertible preferred stock shares issued	1,000,000	1,000,000
Convertible preferred stock shares outstanding	1,000,000	1,000,000