Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Allowance for doubtful accounts	$ 2,444	$ 499
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	20,000,000	20,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	200,000,000	200,000,000
Common stock, issued (in shares)	18,551,332	18,261,807
Common stock, outstanding (in shares)	18,550,092	18,260,567
Treasury stock, shares (in shares)	1,240	1,240