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Note 5 - Accounts Receivable and Customer Concentrations (Tables) | 12 Months Ended
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Dec. 31, 2014
Receivables [Abstract] |
Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
|  | Revenue |  |  | Accounts Receivable |
|  | 201 4 |  |  | 201 3 |  |  | 201 4 |  |  | 201 3 |
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 | %

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- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6327-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6442-108592 + Details
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