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Other Current Liabilities | 12 Months Ended
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Dec. 31, 2017
Other Liabilities Disclosure [Abstract] |
Other Liabilities Disclosure [Text Block] |
11. | Other Current Liabilities
Accrued expenses consisted of the following as of the periods presented below:
|  | DECEMBER 31, |
|  | 2017 |  | 2016 |
Carrier service costs |  | $ | 7,339,150 |  | $ | 5,514,978 |
Salaries and payroll taxes |  |  | 1,259,331 |  |  | 1,374,835 |
Inventory purchases, consultants and other costs |  |  | 762,770 |  |  | 986,013 |
Severance costs |  |  | 328,109 |  |  | - |
U.S. income tax payable (receivable) |  |  | 8,850 |  |  | (42,896) |
Foreign income tax payable |  |  | (1,860) |  |  | 1,872 |
Contingent consideration (Note 4) |  |  | 100,000 |  |  | - |
Accrued expenses |  | $ | 9,796,350 |  | $ | 7,834,802 |

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- Definition The entire disclosure for other liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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