v3.21.1

Credit Facility (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
Credit Facility. |
Schedule of principal payments due under Term Loan | ​
​ | ​ | ​ | ​
​ |  | Principal Payments
April 1, 2021―December 31, 2021 | ​ | $ | 583
January 1, 2022―December 31, 2022 | ​ | ​ | 778
January 1, 2023―December 31, 2023 | ​ | ​ | 388
​ | ​ | $ | 1,749
Schedule of amortization expense for debt issuance costs | ​
​ | ​ | ​ | ​
​ |  | Amortization Expense
April 1, 2021―December 31, 2021 | ​ | $ | 343
January 1, 2022―December 31, 2022 | ​ | ​ | 457
January 1, 2023―December 31, 2023 | ​ | ​ | 120
​ | ​ | $ | 920

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