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v3.20.4

Debt (Tables) | 12 Months Ended
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Dec. 31, 2020
Debt [Abstract] |
Schedule of Interest Information |
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| (in thousands)
Interest expense related to debt, including commitment fees | $ | — |  | $ | — |  | $ | (257)
Deferred finance cost amortization |  | — |  |  | — |  |  | (191)
Interest income |  | 155 |  |  | 733 |  |  | 270
Other interest expense not related to debt |  | — |  |  | — |  |  | 33
Interest income (expense), net | $ | 155 |  | $ | 733 |  | $ | (145)
Average effective interest rate, excluding commitment fees |  | N/A |  |  | N/A |  |  | 7.09%

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