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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES    
Net loss $ (141,436,540) $ (126,709,485)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation of fixed assets 576,459 223,750
Amortization of intangible assets 200,879 140,206
Write off of patent and trademark costs 584,509 78,864
Write off of deferred financing fees 275,379
Non-cash operating lease expense 1,050,940 711,836
(Recovery of) provision for doubtful accounts (46,864) 95,097
Lease impairment 81,309
Inventory obsolesence reserve 5,744,464
Loss on extinguishment of debt 10,057,632
Share-based compensation 8,502,044 7,859,357
Amortization of intellectual property license fee 2,262,002 15,998
Amortization of deferred financing fees 1,370,118 582,829
Changes in operating assets and liabilities:    
Accounts receivable 383,727 (4,354,890)
Inventory (3,816,053) (7,265,174)
Other assets 2,003,079 (1,128,515)
Accounts payable (3,071,574) 1,389,665
Other current liabilities (3,812,919) 3,402,511
Net cash used in operating activities (129,149,041) (114,900,319)
CASH FLOWS FROM INVESTING ACTIVITIES    
Patent costs (1,065,062) (1,068,542)
Purchase of fixed assets (38,613) (2,089,413)
Security deposit 35,000 (20,420)
Net cash used in investing activities (1,068,675) (3,178,375)
CASH FLOWS FROM FINANCING ACTIVITIES    
Proceeds from exercise of options and warrants 271,678 108,656
Repayment of the Credit Agreement (81,660,719)
Proceeds from the Financing Agreement 50,000,000 200,000,000
Payment of deferred financing fees (1,250,000) (6,652,270)
Net cash provided by financing activities 49,021,678 111,795,667
Decrease in cash (81,196,038) (6,283,027)
Cash, beginning of period 160,829,713 161,613,077
Cash, end of period 79,633,675 155,330,050
Supplemental disclosure of noncash investing and financing activities    
Warrant granted in relation to Financing Agreement 7,428,179
Amount accrued for intellectual property license 20,000,000
Supplemental disclosure of cash flow information    
Interest paid $ 19,172,847 $ 12,446,792