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MARKETABLE SECURITIES (Tables)
 12 Months Ended
Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract]  
Summary of Marketable Securities
The amortized cost and fair value of marketable securities as of the dates indicated below were as follows:
As of June 30, 2020 (In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
Corporate debt securities$379,334  $2,673  $(50) $381,957  
Money market funds and other694,950  —  —  694,950  
Municipal securities28,859  251  —  29,110  
Sovereign securities2,009  8  —  2,017  
U.S. Government agency securities106,091  252  (7) 106,336  
U.S. Treasury securities179,631  1,564  (2) 181,193  
Subtotal1,390,874  4,748  (59) 1,395,563  
Add: Time deposits(1)
124,153  —  —  124,153  
Less: Cash equivalents773,653  —  —  773,653  
Marketable securities$741,374  $4,748  $(59) $746,063  
As of June 30, 2019 (In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair Value
Corporate debt securities$433,518  $141  $(582) $433,077  
Money market funds and other352,708  —  —  352,708  
Municipal securities1,910  3  —  1,913  
Sovereign securities6,001  1  (8) 5,994  
U.S. Government agency securities159,454  5  (241) 159,218  
U.S. Treasury securities208,058  39  (401) 207,696  
Subtotal1,161,649  189  (1,232) 1,160,606  
Add: Time deposits(1)
99,006  —  —  99,006  
Less: Cash equivalents536,206  17  (2) 536,221  
Marketable securities$724,449  $172  $(1,230) $723,391  
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(1)Time deposits excluded from fair value measurements.
Investments with Gross Unrealized Losses The following table summarizes the fair value and gross unrealized losses of our investments that were in an unrealized loss position as of the date indicated below, none of which were in a continuous loss position for 12 months or more:
As of June 30, 2020 (In thousands)Fair ValueGross
Unrealized
Losses
Corporate debt securities$44,429  $(50) 
Municipal securities870  0
Sovereign securities—  —  
U.S. Government agency securities9,951  (7) 
U.S. Treasury securities19,010  (2) 
Total$74,260  $(59) 
Contractual Maturities of Securities
The contractual maturities of securities classified as available-for-sale, regardless of their classification on our Consolidated Balance Sheets, as of the date indicated below were as follows:
As of June 30, 2020 (In thousands)Amortized
Cost		Fair Value
Due within one year$415,915  $418,169  
Due after one year through three years325,459  327,894  
$741,374  $746,063