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Commitments and Contingent Liabilities - Additional Information (Detail)
 12 Months Ended
Aug. 09, 2020
m²
Jul. 15, 2015
Dec. 31, 2021
USD ($)
m²
Dec. 31, 2020
USD ($)
m²
Dec. 31, 2019
USD ($)
Operating leases, Future minimum payments due, Next twelve months     $ 1,821,000    
Operating leases, Future minimum payments, Due in two years     348,000    
Operating leases, Future minimum payments, Due in three years     30,000    
Operating leases, Rent expense     2,670,000 $ 2,527,000 $ 2,368,000
Additional royalty per chip     0.1    
Total value of open purchase orders     50,591,000 12,417,000  
Purchase obligation     6,563,000 3,614,000  
Indemnification Agreement [Member]          
Guarantor obligations, Current carrying value     0 0  
Research and Development Arrangement [Member]          
Contractual obligation     0    
Cost of Sales [Member]          
Royalty expense     $ 844,000 $ 711,000 389,000
Research and Development Expense [Member]          
Repayment of liability for the received grant         $ 2,028,000
Minimum [Member]          
Percentage of net revenues per chip paid as royalty     1.00%    
Maximum [Member]          
Percentage of net revenues per chip paid as royalty     3.50%    
Future Extension Periods [Member]          
Operating leases, Future minimum payments due, Next twelve months     $ 10,000    
Operating leases, Future minimum payments, Due in two years     1,457,000    
Operating leases, Future minimum payments, Due in three years     1,689,000    
Operating leases, Future minimum payments, Due in four years     $ 281,000    
Vehicles [Member]          
Lessee, Operating lease, Term of contract     3 years    
Office Building [Member]          
Net rentable area | m² 5,500   5,500 6,295  
Lessee, Operating lease, Expiration period     2023-02    
Lessee, Operating lease, Amended lease terms According to that amendment, the lease term started on March 1, 2021 and will last through February 28, 2023        
Lessee, Operating lease, Option to extend This amendment also provides the Company with an option to extend the lease period by additional two years until February 28, 2025        
Lessee, Operating lease, Option to extend, End date Feb. 28, 2025        
Office Building [Member] | Before Extension [Member]          
Lessee, Operating lease, Expiration period   2021-02      
Office Building [Member] | Other Noncurrent Assets [Member]          
Security deposit, Non current     $ 433,000 $ 336,000