Annual report pursuant to Section 13 and 15(d)

Note 5 - Fair Value Measurements - Fair Value Measurements (Details)

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Note 5 - Fair Value Measurements - Fair Value Measurements (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Jun. 30, 2022
Corporate money market funds (1) [1] $ 23,923  
Investments (2) [2] 110,577  
Total 134,500  
Fair Value, Inputs, Level 1 [Member]    
Investments (2) [2] 0  
Total 23,923  
Fair Value, Inputs, Level 2 [Member]    
Investments (2) [2] 110,577  
Total 110,577  
Fair Value, Inputs, Level 3 [Member]    
Investments (2) [2] 0  
Total 0  
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]    
Corporate money market funds (1) [1] 23,923 $ 51,035
Money Market Funds [Member] | Fair Value, Inputs, Level 2 [Member]    
Corporate money market funds (1) [1] 0  
Money Market Funds [Member] | Fair Value, Inputs, Level 3 [Member]    
Corporate money market funds (1) [1] $ 0  
[1] We invest excess cash in corporate money market funds and short-term investments. Our corporate money market funds are readily convertible into cash and the net asset value of each fund on the last day of the quarter is used to determine its fair value. Our corporate money market funds are classified as Level 1 assets and are included in Cash and cash equivalents within the consolidated balance sheets.
[2] Our investments as of June 30, 2023 consisted solely of United States Treasury Bills with maturities of less than one year. Previously held investments included fixed income securities including municipal bonds, commercial paper and certificates of deposits with maturities of less than one year. We classify our investments as available-for-sale debt investments. The fair value of our underlying investments is based on observable inputs. Our investments are classified as Level 2 and are included in Investments (short-term) within the consolidated balance sheets. All unrealized gains and losses were included, net of tax, in Accumulated other comprehensive loss within the consolidated balance sheets. There were no material gross unrealized gains or losses on the investments as of June 30, 2023 or 2022.