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Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Expenses (Details) (10-K)

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Accounts Payable and Accrued Expenses - Schedule of Accounts Payable and Accrued Expenses (Details) (10-K) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]      
Accounts payable and accrued expenses $ 3,485,949 $ 3,591,641 $ 3,678,691 [1]
Accrued taxes (VAT, Sales, Payroll, etc.) 3,394,293 3,243,806 826,305
Accrued income taxes 54,948 61,790 83,878
Accrued interest 496,533 489,269 1,208,378
Accounts payable and accrued expenses $ 7,431,723 $ 7,386,506 $ 5,797,252
[1] Amount excludes deferred revenue which is broken out separately on the balance sheet in this 10-K filing.