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Stock-Based Compensation and Employee Benefit Plans - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Term of Option 10 years    
Employee's compensation plan The Company matches employee contributions to the plan at a rate of 50%, up to the first 6% of an employee’s compensation.    
Employee contributions 20.00%    
Company contribution to the plan $ 1,593,000 $ 1,031,000 $ 1,001,000
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employees pre-tax salary 1.00%    
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employees pre-tax salary 80.00%    
2000 Plan, Vicor [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common Stock reserved for issuance 10,000,000    
Non-qualified stock options granted to non-employees 85.00%    
Annual forfeiture rate 4.85% 5.25% 5.25%
Share exercisable 776,559 924,964 1,475,947
Weighted average exercise prices $ 11.63 $ 9.05 $ 8.74
Total Intrinsic value $ 56,933,000 $ 50,410,000 $ 6,636,000
Options Exercised 7,616,000 9,127,000 2,437,000
Fair value of stock options that vested 10,506,000 $ 10,847,000 $ 1,657,000
Total unrecognized compensation cost $ 15,019,000    
Compensation cost recognized over a weighted-average period 1 year 7 months 6 days    
Expected recognized expenses, Year One $ 6,837,000    
Expected recognized expenses, Year Two 4,142,000    
Expected recognized expenses, Year Three 2,478,000    
Expected recognized expenses, Year Four 1,260,000    
Expected recognized expenses, Year Five $ 302,000    
Weighted-average fair value $ 39.27 $ 30.63 $ 14.30
Stock Bonus Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock purchase by non-employees 109,964    
2017 Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Non-qualified stock options granted to non-employees 85.00%    
Maximum number of shares authorized for issuances 2,000,000    
Maximum percentage of payroll deductions on employee's compensation 15.00%    
Offering period of employee stock purchase plan 6 months