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Convertible Notes Schedule of Maturities of Long-term Debt (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months $ 0
Long-term Debt, Maturities, Repayments of Principal in Year Two 19,170
Long-term Debt, Maturities, Repayments of Principal in Year Three 0
Long-term Debt, Maturities, Repayments of Principal in Year Four 0
Long-term Debt, Maturities, Repayments of Principal in Year Five 11,500
Long-term Debt, Maturities, Repayments of Principal after Year Five 0
Long-term Debt 30,670
December 2021 Notes [Member]  
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 0
Long-term Debt, Maturities, Repayments of Principal in Year Two 19,170
Long-term Debt, Maturities, Repayments of Principal in Year Three 0
Long-term Debt, Maturities, Repayments of Principal in Year Four 0
Long-term Debt, Maturities, Repayments of Principal in Year Five 0
Long-term Debt, Maturities, Repayments of Principal after Year Five 0
Long-term Debt $ 19,170