Accrued Expenses (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Accrued Expenses
Accrued price protection	$ 1,853,979	$ 1,853,979
Accrued product returns	8,107,386	9,452,248
Accrued contract rebates	506,229	412,046
Due to Vivus (see Note 14)	2,267,523	2,267,523
Due to third-party logistic provider	532,321
Accrued severance	75,436	519,609
Accrued professional fees	23,479
Other accrued expenses	398,504	178,381
Total accrued expenses	$ 13,764,857	$ 14,683,786