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Fair Value of Financial Instruments (Tables)
3 Months Ended
Oct. 31, 2022
Fair Value Disclosures [Abstract]  
Schedule of Available-for-sale Securities Reconciliation
Available-for-sale investments within cash equivalents and investments consist of the following (in thousands):
October 31, 2022
Amortized CostUnrealized GainsUnrealized LossesEstimated Fair Value
Commercial paper$177,719 $— $— $177,719 
Corporate bonds302,449 (5,973)296,483 
Certificates of deposit54,997 — — 54,997 
U.S. Government bonds67,793 (1,760)66,039 
Money market funds67,752 — — 67,752 
U.S. Government agency securities49,354 — (642)48,712 
Asset-backed securities50,438 (786)49,654 
Foreign government bonds10,346 — (456)9,890 
     Total$780,848 $15 $(9,617)$771,246 
July 31, 2022
Amortized CostUnrealized GainsUnrealized LossesEstimated Fair Value
Commercial paper$197,998 $— $— $197,998 
Corporate bonds320,474 (4,880)315,602 
Certificates of deposit43,715 — — 43,715 
U.S. Government bonds47,014 — (1,312)45,702 
Money market funds349,492 — — 349,492 
U.S. Government agency securities37,572 — (586)36,986 
Asset-backed securities54,782 — (611)54,171 
Foreign government bonds15,109 — (361)14,748 
Municipal bonds205 — — 205 
    Total$1,066,361 $$(7,750)$1,058,619 
Investments Classified by Contractual Maturity Date
The following table summarizes the contractual maturities of the Company’s available-for-sale investments measured at fair value (in thousands):
October 31, 2022
Less Than 12 Months12 Months or GreaterTotal
Commercial paper$177,719 $— $177,719 
Corporate bonds222,767 73,716 296,483 
Certificates of deposit54,997 — 54,997 
U.S. Government bonds30,490 35,549 66,039 
Money market funds67,752 — 67,752 
U.S. Government agency securities44,880 3,832 48,712 
Asset-backed securities1,427 48,227 49,654 
Foreign government bonds7,879 2,011 9,890 
     Total$607,911 $163,335 $771,246 
Fair Value, Assets Measured on Recurring Basis The following tables summarize the Company’s available-for-sale investments measured at fair value, by level within the fair value hierarchy (in thousands):
October 31, 2022
Level 1Level 2Level 3Total
Cash equivalents:
Commercial paper$— $77,178 $— $77,178 
Certificates of deposit— 3,000 — 3,000 
Money market funds67,752 — — 67,752 
U.S. Government agency securities— 17,958 — 17,958 
Total cash equivalents67,752 98,136 — 165,888 
Short-term investments:
Commercial paper— 100,541 — 100,541 
Corporate bonds— 222,767 — 222,767 
Certificates of deposit— 51,997 — 51,997 
U.S. Government bonds— 30,490 — 30,490 
U.S. Government agency securities— 26,922 — 26,922 
Asset-backed securities— 1,427 — 1,427 
Foreign government bonds— 7,879 — 7,879 
Total short-term investments— 442,023 — 442,023 
Long-term investments:
Corporate bonds— 73,716 — 73,716 
U.S. Government bonds— 35,549 — 35,549 
U.S. Government agency securities— 3,832 — 3,832 
Asset-backed securities— 48,227 — 48,227 
Foreign government bonds— 2,011 — 2,011 
Total long-term investments— 163,335 — 163,335 
       Total$67,752 $703,494 $— $771,246 
July 31, 2022
Level 1Level 2Level 3Total
Cash equivalents:
Commercial paper$— $132,066 $— $132,066 
Certificates of deposit— 9,689 — 9,689 
Money market funds349,492 — — 349,492 
U.S. Government agency securities— 10,000 — 10,000 
Total cash equivalents349,492 151,755 — 501,247 
Short-term investments:
Commercial paper— 65,932 — 65,932 
Corporate bonds— 203,960 — 203,960 
Certificates of deposit— 34,026 — 34,026 
U.S. Government bonds— 25,429 — 25,429 
U.S. Government agency securities— 26,986 — 26,986 
Asset-backed securities— 8,627 — 8,627 
Foreign government bonds— 4,700 — 4,700 
Municipal bonds— 205 — 205 
Total short-term investments— 369,865 — 369,865 
Long-term investments:
Corporate bonds— 111,642 — 111,642 
U.S. Government bonds— 20,273 — 20,273 
Asset-backed securities— 45,544 — 45,544 
Foreign government bonds— 10,048 — 10,048 
Total long-term investments— 187,507 — 187,507 
      Total$349,492 $709,127 $— $1,058,619