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Term Loans and Debt (Tables)
12 Months Ended
Dec. 31, 2019
Debt Disclosure [Abstract]  
Key Terms and Details of Term Loan Borrowings and Composition of Term Loans
The key terms and details of the Company's term loan borrowings under the WTI Loan Facilities were as follows:
Borrowing DateLoan FacilityLoan Amount (in thousands)Maturity DateContractual Interest RateEffective Interest Rate
September 2017First WTI Facility$30,000  February 202211.5 %15.9 %
March 2018First WTI Facility$30,000  September 202211.8 %14.8 %
May 2018Second WTI Facility$15,000  November 202212.0 %14.7 %
Term loans consisted of the following as of December 31, 2018 (in thousands):
Outstanding principal balance$73,594  
Less: Unamortized discount and debt issuance costs(872) 
Total term loan, net$72,722  
Current portion of term loans$5,635  
Term loans67,087