Accrued Expenses And Other Current Liabilities (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Accrued Liabilities and Other Liabilities [Abstract]
Sales returns and allowances	$ 4,146,217	$ 0
Compensation and benefits	1,401,514	272,601
General and administrative	1,001,454	160,116
Royalties payable	743,010	0
Research and development expenses	299,480	315,937
Other	256,634	0
Accrued interest	0	193,781
Total accrued expenses and other current liabilities	$ 7,848,309	$ 942,435