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Oxford Term Loans - Maturities of Debt (Details)
$ in Thousands
Mar. 31, 2019
USD ($)
Principal  
2022 $ 26,087
2023 39,130
2024 9,783
Principal payment excluding final payment 75,000
Final Payment  
2022 0
2023 0
2024 4,125
Final payments 4,125
Total  
2022 26,087
2023 39,130
2024 13,908
Total long-term debt $ 79,125