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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Cash flows from operating activities:    
Net income $ 2,104,385 $ 10,183,299
Adjustments to reconcile net income to net cash used in operating activities:    
Depreciation 50,351 34,803
Amortization 851,045 183,493
Bad debt allowance 221,182 69,322
Inventory excess and obsolescence allowance (137,370) 185,143
Stock-based compensation expense 2,574,999 2,454,295
Gain on China transaction 23,100 (12,052,809)
Gain on lease cancellations (152,112)  
Changes in operating assets and liabilities:    
Accounts receivable-net (4,668,549) (2,561,721)
Inventory (8,082,699) 449,654
Prepaid expenses and other current assets (142,419) (1,486,418)
Accounts payable and accrued expenses 2,856,654 (1,851,333)
Deposits/deferred revenue and other current liabilities 109,313 (95,071)
Change in Right to Use and Lease Obligation-net 146,042  
Net cash used in operating activities (4,246,078) (4,487,343)
Cash flows from investing activities:    
Proceeds from note receivable 1,331,011  
Purchase of property and equipment (315,777) (23,076)
Net cash used in investing activities 1,015,234 (23,076)
Cash flows from financing activities:    
Proceeds from notes payable-related-party, net 1,500,000
Principal payments financial lease obligations (222,052)
Proceeds from exercise of stock options 704,664 147,427
Net cash provided by financing activities 482,612 1,647,427
Effect on exchange rate changes on cash and cash equivalents (231,635) (48,498)
Net (decrease) in cash and cash equivalents (2,979,867) (2,911,490)
Cash and cash equivalents at beginning of the period 23,090,682 7,743,181
Cash and cash equivalents at end of the period 20,110,815 4,831,691
Cash paid during period for:    
Interest 257,418 59,986
European Acquisition Adjustment:    
Goodwill 395,515
Other liabilities $ (395,515)