Note 5 - Accounts Receivable and Customer Concentrations (Tables)

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Revenue						Accounts Receivable
	2014			2013			2014			2013
ChemFree
Customer A		16	%		18	%		20	%		17	%
Customer B		9	%		8	%		12	%		15	%
Customer C		21	%		21	%		15	%		18	%
CoreCard
Customer D		7	%		6	%		10	%		10	%