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Commitments and Contingencies (Tables)
6 Months Ended
Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]  
Schedule of roll forward of severance liability The following table presents a roll forward of the restructuring costs liability for the six months ended June 30, 2021 (in thousands):
Restructuring Costs Liability
Accrual at December 31, 2020$381 
Cash Payments— 
Accrual at June 30, 2021$381