Contractual Maturities of Investments in Debt Securities Held (Detail) $ in Thousands	Jun. 29, 2025 USD ($)
Schedule of Available-for-sale Securities
Due within one year, cost	$ 28,684
Due after 1 year through 5 years, cost	20,756
Due after 5 years through 10 years, cost	7,716
Due after 10 years, cost	35,459
Total, cost	92,615
Due within one year, fair market value	28,638
Due after 1 year through 5 years, fair market value	20,560
Due after 5 years through 10 years, fair market value	7,721
Due after 10 years, fair maket value	26,746
Total, fair market value	$ 83,665