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Leases (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 26, 2022
Apr. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Leases [Abstract]              
Operating lease expense     $ 261 $ 235 $ 748 $ 717  
Operating cash outflows from leases         $ 617 $ 750  
Weighted average remaining lease term     3 years   3 years   3 years 6 months
Weighted average discount rate     4.50%   4.50%   4.40%
Maturity of Operating Lease Liabilities [Abstract]              
2022     $ 218   $ 218   $ 886
2023     968   968   721
2024     1,019   1,019   721
2025     707   707   426
2026     19   19   23
Total undiscounted lease payments     2,931   2,931   2,777
Less imputed interest     195   195   207
Total lease liabilities     $ 2,736   $ 2,736   $ 2,570
Minimum [Member]              
Leases [Abstract]              
Remaining lease terms     2 years   2 years    
Maximum [Member]              
Leases [Abstract]              
Remaining lease terms     4 years   4 years    
Facility in Hamden, Connecticut [Member]              
Leases [Abstract]              
Extension period for leases     2 years   2 years    
Increase (decrease) in right-of-use-asset   $ (300)          
Increase (decrease) in operating lease liability   $ (300)          
Facility in Las Vegas, Nevada [Member]              
Leases [Abstract]              
Increase (decrease) in right-of-use-asset $ 800            
Increase (decrease) in operating lease liability $ 800