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Leases - Lessee (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Oct. 01, 2016
ft²
Dec. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Lessee, Operating Sublease, Description [Abstract]        
Term of sublease 10 years      
Area of subleased property | ft² 1,920      
Lease terms        
Lease expense | $   $ 12 $ 138 $ 138
Weighted-average remaining lease term     4 years 9 months 18 days