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Accounts Receivable and Significant Concentrations (Tables) | 12 Months Ended
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Dec. 31, 2018
Receivables [Abstract] |
Schedule of accounts receivable |
|  | DECEMBER 31, |
|  | 2018 |  |  | 2017 |
Government (1) |  | $ | 7,332,338 |  |  | $ | 6,055,397 |
Commercial (2) |  |  | 3,863,710 |  |  |  | 2,183,246 |
Gross accounts receivable |  |  | 11,196,048 |  |  |  | 8,238,643 |
Less: allowances for doubtful accounts (3) |  |  | 106,733 |  |  |  | 107,618 |
Accounts receivable, net |  | $ | 11,089,315 |  |  | $ | 8,131,025 |
Schedule of concentration of risk |
|  | DECEMBER 31, |
|  | 2018 |  |  | 2017 |
|  | As a % of |  |  | As a % of |
Customer Name |  | Receivables |  |  | Receivables |
U.S. Customs Border Patrol |  |  | 14 | % |  |  | 12 | %
U.S. Immigration and Customs Enforcement |  |  | -- |  |  |  | 13 | %
U.S. Federal Air Marshall Service |  |  | 3 | % |  |  | 10 | %
Iron Bow Technologies |  |  | 15 | % |  |  | -- |
|  | YEARS ENDED |
|  | DECEMBER 31, |
|  | 2018 |  |  | 2017 |
|  | As a % of |  |  | As a % of |
Customer Name |  | Revenues |  |  | Revenues |
U.S. Immigration and Customs Enforcement |  |  | 16 | % |  |  | 17 | %
U.S. Customs Border Patrol |  |  | 11 | % |  |  | 11 | %
6. | Unbilled Accounts Receivable and Significant Concentrations

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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