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Leases (Tables)
 9 Months Ended
Sep. 30, 2021
Leases [Abstract]  
Schedule of noncancelable operating lease arrangements
(in thousands)  Finance
Leases		   Operating
Leases		 
2022  $43    870 
2023   136    960 
2024   82    982 
2025   20    1,007 
2026   
-
    1,031 
Thereafter   
-
    2,887 
Total undiscounted cash flows   281    7,737 
Less amount representing interest/discounting   (3)   (2,507)
Present value of future lease payments   278    5,230 
Less future lease incentives   
-
    (900)
Less lease obligations, current portion   (153)   (262)
Lease obligations – long term portion  $125   $4,068 
Schedule of finance lease obligations included in property and equipment
   September 30,   December 31, 
(in thousands)  2021   2020 
Laboratory equipment  $1,148   $920 
Furniture and fixtures   46    46 
Work in process   
-
    228 
Total   1,194    1,194 
Less accumulated depreciation   (629)   (593)
Net  $565   $601 

 
Schedule of finance and operating lease costs
   Three Months Ended
September 30,		   Nine Months Ended
September 30,		 
(in thousands)  2021   2020   2021   2020 
Finance lease costs:                
Amortization  $37   $41   $110   $137 
Interest on lease liabilities   6    9    21    30 
Operating lease costs   107    95    247    308 
Short-term lease costs   98    66    214    203 
Variable lease costs   32    22    71    70 
Total lease costs  $280   $233   $663   $748 

 
Schedule of supplemental cash flow information
(in thousands)  2021   2020 
Operating cash flows from operating leases  $(533)  $(497)
Operating cash flows from finance leases  $(21)  $(30)
Financing cash flows from finance leases  $(117)  $(156)