Other Current Assets and Accrued Expenses (Details 1) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Carrier service costs	$ 5,593,250	$ 7,339,150
Salaries and payroll taxes	1,279,566	1,259,331
Inventory purchases, consultants and other costs	705,750	762,770
Severance costs	121,507	328,109
Contingent consideration (Note 3)	100,000	100,000
Total accrued expenses	7,801,763	9,796,350
UNITED STATES
Accrued Income Taxes, Current	8,850	8,850
Foreign [Member]
Accrued Income Taxes, Current	$ (7,160)	$ (1,860)