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Leases (Narrative) (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 13, 2020
Lease
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Lessee, Lease, Description [Line Items]          
Operating lease right of use assets (Note 10)     $ 3,064   $ 1,977
Operating lease, liability     5,257   $ 6,100
Number of leases abandoned | Lease 14        
Restricted cash in prepaid expenses and other current assets   $ 1,274 410 $ 1,274  
Gain on settlement of leases   $ 3,300 0 $ 3,322  
Israel          
Lessee, Lease, Description [Line Items]          
Restricted cash in prepaid expenses and other current assets     200    
Australia          
Lessee, Lease, Description [Line Items]          
Restricted cash in prepaid expenses and other current assets     $ 200    
Minimum          
Leases [Abstract]          
Operating leases remaining lease term     1 year    
Lessee, Lease, Description [Line Items]          
Operating leases remaining lease term     1 year    
Maximum          
Leases [Abstract]          
Operating leases remaining lease term     4 years    
Lessee, Lease, Description [Line Items]          
Operating leases remaining lease term     4 years