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Organization and Significant Accounting Policies - Revenue by Category (Details) - USD ($)
3 Months Ended 6 Months Ended
Oct. 28, 2023
Oct. 29, 2022
Oct. 28, 2023
Oct. 29, 2022
Disaggregation of revenue        
Revenue $ 180,816,000 $ 111,584,000 $ 333,163,000 $ 220,100,000
Contract Liability        
Disaggregation of revenue        
Revenue 696,000 1,080,000 2,416,000 3,004,000
Domestic        
Disaggregation of revenue        
Revenue 69,975,000 67,657,000 128,101,000 117,760,000
International        
Disaggregation of revenue        
Revenue 110,841,000 43,927,000 205,062,000 102,340,000
U.S. government        
Disaggregation of revenue        
Revenue 149,959,000 84,165,000 251,307,000 151,880,000
Non-U.S. government        
Disaggregation of revenue        
Revenue 30,857,000 27,419,000 81,856,000 68,220,000
FFP        
Disaggregation of revenue        
Revenue 159,879,000 85,236,000 289,821,000 166,065,000
CPFF        
Disaggregation of revenue        
Revenue 19,802,000 25,013,000 41,095,000 51,468,000
T&M        
Disaggregation of revenue        
Revenue 1,135,000 1,335,000 2,247,000 2,567,000
UMS        
Disaggregation of revenue        
Revenue 132,773,000 61,634,000 230,980,000 129,408,000
LMS        
Disaggregation of revenue        
Revenue 30,249,000 31,101,000 61,166,000 54,113,000
MW        
Disaggregation of revenue        
Revenue $ 17,794,000 $ 18,849,000 $ 41,017,000 $ 36,579,000