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Convertible Debt - Balance of Convertible Bonds and Notes (Details)	Jun. 30, 2020 USD ($)
6.50% Convertible Senior Notes Due 2024
Debt Instrument [Line Items]
Principal amount	$ 78,500,000
Unamortized debt discount	(12,619,675)
Unamortized debt issuance cost	(1,736,898)
Accrued interest	1,700,833
Total	65,844,260
August 2019 Convertible Bonds
Debt Instrument [Line Items]
Principal amount	14,993,753
Unamortized debt discount	(5,600,302)
Unamortized debt issuance cost	(211,272)
Accretion of premium associated with the Bonds	519,085
Accrued interest	37,484
Total	9,738,748
December 2019 Convertible Bonds
Debt Instrument [Line Items]
Principal amount	3,915,035
Unamortized debt issuance cost	(40,681)
Accretion of premium associated with the Bonds	95,638
Accrued interest	9,788
Total	$ 3,979,780

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