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Supplemental Financial Information
 9 Months Ended
Jan. 27, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Supplemental Financial Information Supplemental Financial Information
Inventories
Inventories consisted of the following (in thousands):
January 27, 2024April 29, 2023
Raw materials$11,441 $17,456 
Work in process8,263 7,200 
Finished goods11,803 21,367 

$31,507 $46,023 
Property and Equipment, Net
Property and equipment consisted of the following (in thousands):
January 27, 2024April 29, 2023
Computer equipment and software$18,217 $13,942 
Laboratory equipment17,720 15,577 
Production equipment24,718 19,783 
Leasehold improvements2,009 2,005 
Others648 632 
Construction in progress7,526 6,300 
70,838 58,239 
Less: accumulated depreciation and amortization(25,939)(18,017)
$44,899 $40,222 
Depreciation and amortization expense was $3.4 million and $10.1 million for the three and nine months ended January 27, 2024, respectively, and $2.3 million and $6.5 million for the three and nine months ended January 28, 2023, respectively. Computer equipment and software primarily includes technology licenses for computer-aided design tools relating to the Company’s R&D design of future products and intellectual properties. Construction in progress and production equipment primarily includes mask set costs capitalized relating to the Company’s new products already introduced or to be introduced.
Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):
January 27, 2024April 29, 2023
Accrued expenses$9,868 $7,555 
Current payables relating to purchases of property and equipment5,594 4,269 
Current portion of operating lease liabilities2,806 2,630 

$18,268 $14,454 
Other Non-current Liabilities
Other non-current liabilities consisted of the following (in thousands):
January 27, 2024April 29, 2023
Non-current payables relating to purchases of property and equipment$5,490 $5,049 
Non-current deferred revenue239 380 
Other non-current liabilities972 324 

$6,701 $5,753