v3.26.1
Consolidated Statements of Comprehensive (Loss) Income - USD ($)
$ in Thousands
 12 Months Ended
Mar. 27, 2026
Mar. 28, 2025
Mar. 29, 2024
Statement of Comprehensive Income [Abstract]      
Net (loss) income $ (14,653) $ (72,763) $ 152,888
Net income attributable to non-controlling interests 244 247 191
Net (loss) income attributable to Allegro MicroSystems, Inc. (14,897) (73,010) 152,697
Other comprehensive (loss) income:      
Foreign currency translation adjustment 407 (2,127) (7,720)
Net actuarial gain (loss) on amortization of net transition obligation and prior service costs related to defined benefit plans, net of tax of $(359), $(84) and $145 in fiscal years 2026, 2025 and 2024, respectively 1,076 252 (434)
Comprehensive (loss) income (13,414) (74,885) 144,543
Other comprehensive gain (loss) attributable to non-controlling interests 68 (36) 97
Comprehensive (loss) income attributable to Allegro MicroSystems, Inc. $ (13,346) $ (74,921) $ 144,640