Investment Securities	6 Months Ended
Investment Securities	Nov. 26, 2022
Investments Securities [Abstract]
Investment Securities	Note 2 - Investment Securities The following represents the Company’s investment securities as of November 26, 2022 and May 28, 2022 (in thousands): November 26, 2022 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Municipal bonds $ 15,956 $ — $ 276 $ 15,680 Commercial paper 33,058 — 53 33,005 Corporate bonds 81,218 — 1,709 79,509 US government and agency obligations 19,111 — 205 18,906 Asset backed securities 13,403 — 340 13,063 Treasury bills 40,644 — 93 40,551 Total current investment securities $ 203,390 $ — $ 2,676 $ 200,714 Mutual funds $ 3,472 $ — $ 114 $ 3,358 Total noncurrent investment securities $ 3,472 $ — $ 114 $ 3,358 May 28, 2022 Amortized Cost Unrealized Gains Unrealized Losses Estimated Fair Value Municipal bonds $ 10,136 $ — $ 32 $ 10,104 Commercial paper 14,940 — 72 14,868 Corporate bonds 74,167 — 483 73,684 Certificates of deposits 1,263 — 18 1,245 US government and agency obligations 2,205 4 — 2,209 Asset backed securities 13,456 — 137 13,319 Total current investment securities $ 116,167 $ 4 $ 742 $ 115,429 Mutual funds $ 3,826 $ — $ 74 $ 3,752 Total noncurrent investment securities $ 3,826 $ — $ 74 $ 3,752 Available-for-sale Proceeds from sales and maturities of investment securities available-for-sale were $ 65.3 million and $ 67.9 million during the twenty-six weeks ended November 26, 2022 and November 27, 2021, respectively. Gross realized gains for the twenty-six weeks ended November 26, 2022 and November 27, 2021 were $ 2 thousand and $ 165 thousand, respectively. Gross realized losses for the twenty-six weeks ended November 26, 2022 and November 27, 2021 were $ 63 thousand and $ 67 thousand, respectively. There were no allowances for credit losses at November 26, 2022 and May 28, 2022. Actual maturities may differ from contractual maturities as some borrowers have the right to call or prepay obligations with or without penalties. Contractual maturities of current investments at November 26, 2022 are as follows (in thousands): Estimated Fair Value Within one year $ 133,867 1-5 years 66,847 Total $ 200,714 Noncurrent There were no sales of noncurrent investment securities during the twenty-six weeks ended November 26, 2022. Proceeds from sales and maturities of noncurrent investment securities were $ 453 thousand during the twenty-six weeks ended November 27, 2021. Gross realized gains for the twenty-six weeks ended November 27, 2021 were $ 165 thousand. There were no realized losses for the twenty-six weeks ended November 27, 2021.