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Condensed Consolidated Statements of Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-In Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Treasury Stock [Member]
Total Vicor Corporation Stockholders' Equity [Member]
Noncontrolling Interest [Member]
Class B Common Stock [Member]
Common Stock [Member]
Beginning Balance at Dec. 31, 2023 $ 541,106 $ 445 $ 383,832 $ 296,674 $ (1,273) $ (138,927) $ 540,869 $ 237 $ 118
Issuance of Common Stock under employee stock plans 7,047 7 7,040       7,047    
Stock-based compensation expense 11,245   11,245       11,245    
Repurchases of common stock (497)         (497) (497)    
Components of comprehensive (loss) income, net of tax:                  
Net (loss) income (4,103)     (4,117)     (4,117) 14  
Other comprehensive income (loss) 72       75   75 (3)  
Consolidated comprehensive income (loss) (4,031)           (4,042) 11  
Ending Balance at Sep. 30, 2024 554,870 452 402,117 292,557 (1,198) (139,424) 554,622 248 118
Beginning Balance at Jun. 30, 2024 537,457 451 396,175 281,005 (1,583) (138,927) 537,239 218 118
Issuance of Common Stock under employee stock plans 1,909 1 1,908       1,909    
Stock-based compensation expense 4,034   4,034       4,034    
Repurchases of common stock (497)         (497) (497)    
Components of comprehensive (loss) income, net of tax:                  
Net (loss) income 11,554     11,552     11,552 2  
Other comprehensive income (loss) 413       385   385 28  
Consolidated comprehensive income (loss) 11,967           11,937 30  
Ending Balance at Sep. 30, 2024 554,870 452 402,117 292,557 (1,198) (139,424) 554,622 248 118
Beginning Balance at Dec. 31, 2024 570,291 452 407,617 302,803 (1,495) (139,424) 570,071 220 118
Issuance of Common Stock under employee stock plans 8,935 3 8,932       8,935    
Stock-based compensation expense 12,420   12,420       12,420    
Repurchases of common stock (33,304)         (33,304) (33,304)    
Components of comprehensive (loss) income, net of tax:                  
Net (loss) income 72,063     72,023     72,023 40  
Other comprehensive income (loss) (52)       (66)   (66) 14  
Consolidated comprehensive income (loss) 72,011           71,957 54  
Ending Balance at Sep. 30, 2025 630,353 455 428,969 374,826 (1,561) (172,728) 630,079 274 118
Beginning Balance at Jun. 30, 2025 608,866 453 419,814 346,534 (1,291) (157,033) 608,595 271 118
Issuance of Common Stock under employee stock plans 4,795 2 4,793       4,795    
Stock-based compensation expense 4,362   4,362       4,362    
Repurchases of common stock (15,695)         (15,695) (15,695)    
Components of comprehensive (loss) income, net of tax:                  
Net (loss) income 28,302     28,292     28,292 10  
Other comprehensive income (loss) (277)       (270)   (270) (7)  
Consolidated comprehensive income (loss) 28,025           28,022 3  
Ending Balance at Sep. 30, 2025 $ 630,353 $ 455 $ 428,969 $ 374,826 $ (1,561) $ (172,728) $ 630,079 $ 274 $ 118