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Note 5 - Accounts Receivable and Customer Concentrations | 12 Months Ended
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Dec. 31, 2015
Notes to Financial Statements |
Loans, Notes, Trade and Other Receivables Disclosure [Text Block] |
5. | ACCOUNTS RECEIVABLE and customer concentrations
At both December 31, 2015 and 2014, our allowance for doubtful accounts amounted to $0. Net charges against the allowance for doubtful accounts were $0 in both 2015 and 2014. The following table indicates the percentage of consolidated revenue from continuing operations and year-end accounts receivable represented by each customer that represented more than 10 percent of consolidated revenue from continuing operations or year-end accounts receivable.
|  | Revenue |  |  | Accounts Receivable |
|  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Customer A |  |  | 22.5 | % |  |  | 24.7 | % |  |  | 23.6 | % |  |  | 37.1 | %
Customer B |  |  | 18.7 | % |  |  | 12.7 | % |  |  | 6.4 | % |  |  | -- |
Customer C |  |  | 2.0 | % |  |  | -- |  |  |  | 28.9 | % |  |  | -- |
Customer D |  |  | 3.9 | % |  |  | 6.2 | % |  |  | 11.6 | % |  |  | 15.4 | %

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- Definition The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5066-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5162-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5074-111524 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 9 + Details
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