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Convertible Debt (Tables)
 9 Months Ended
Sep. 30, 2019
Debt Disclosure [Abstract]  
Convertible Debt
The balance of the Notes at September 30, 2019 is as follows:
Principal amount
$
78,500,000

Unamortized debt discount on the liability component
(14,772,356
)
Unamortized debt issuance cost
(2,033,181
)
Accrued interest
425,208

     Net carrying amount
$
62,119,671

The balance of the Bonds at September 30, 2019 is as follows:
Principal amount
$
15,052,055

Unamortized debt discount
(6,945,328
)
Unamortized debt issuance cost
(262,013
)
Accretion of premium associated with the Bonds
84,569

Accrued interest
25,568

     Net carrying amount
$
7,954,851