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Fair Value Measurements
6 Months Ended
Nov. 28, 2020
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The Company is required to categorize both financial and nonfinancial assets and liabilities based on the following fair value hierarchy.  The fair value of an asset is the price at which the asset could be sold in an orderly transaction between unrelated, knowledgeable, and willing parties able to engage in the transaction. A liability’s fair value is defined as the amount that would be paid to transfer the liability to a new obligor in a transaction between such parties, not the amount that would be paid to settle the liability with the creditor.

Level 1 - Quoted prices in active markets for identical assets or liabilities
Level 2 - Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly, including:
Quoted prices for similar assets or liabilities in active markets
Quoted prices for identical or similar assets in non-active markets
Inputs other than quoted prices that are observable for the asset or liability
Inputs derived principally from or corroborated by other observable market data
Level 3 - Unobservable inputs for the asset or liability that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities

The disclosures of fair value of certain financial assets and liabilities that are recorded at cost are as follows:
Cash and cash equivalents, accounts receivable, and accounts payable: The carrying amount approximates fair value due to the short maturity of these instruments.

Lease obligations: The carrying value of the Company’s lease obligations is at its present value which approximates fair value.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

In accordance with the fair value hierarchy described above, the following table shows the fair value of financial assets and liabilities measured at fair value on a recurring basis as of November 28, 2020 and May 30, 2020 (in thousands):

November 28, 2020Level 1Level 2Level 3Balance
Assets
Municipal bonds$— $16,462 $— $16,462 
Commercial paper— 3,736 — 3,736 
Corporate bonds— 99,742 — 99,742 
Certificates of deposits— 1,002 — 1,002 
Asset backed securities— 3,679 — 3,679 
Mutual funds3,313 — — 3,313 
Total assets measured at fair value$3,313 $124,621 $— $127,934 
May 30, 2020Level 1Level 2Level 3Balance
Assets
Municipal bonds$— $16,179 $— $16,179 
Commercial paper— 6,982 — 6,982 
Corporate bonds— 126,868 — 126,868 
Certificates of deposits— 1,492 — 1,492 
Asset backed securities— 2,642 — 2,642 
Mutual funds2,749 — — 2,749 
Total assets measured at fair value$2,749 $154,163 $— $156,912 

Investment securities – available-for-sale classified as level 2 consist of securities with maturities of three months or longer when purchased. Observable inputs for these securities are yields, credit risks, default rates, and volatility.