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Property and Equipment, net
 6 Months Ended
Jun. 30, 2022
Property, Plant and Equipment [Abstract]  
Property and Equipment, net Property and Equipment, net
Property and equipment consisted of the following:
 June 30, 2022December 31, 2021Estimated Useful Life (years)
Furniture and fixtures$1,525 $1,525 7
Office equipment1,077 1,077 3
Equipment4,003 3,834 7
Leasehold improvements1,155 1,155 2
 7,760 7,591  
Less accumulated depreciation(6,301)(5,955)
Property and equipment, net$1,459 $1,636  
Depreciation expense related to property and equipment amounted to $0.2 million and $0.2 million for the three months ended June 30, 2022 and 2021, respectively, and $0.4 million and $0.4 million for the six months ended June 30, 2022 and 2021, respectively.