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Fair Value Measurements (Tables)
 12 Months Ended
Jul. 31, 2021
Fair Value Disclosures [Abstract]  
Schedule of Balance of Assets Measured at Fair Value On a Recurring Basis

The following table presents the balance of assets and liabilities measured at fair value on a recurring basis:

 

(in thousands)  Level 1   Level 2   Level 3   Total 
July 31, 2021                    
Debt securities  $1,652   $12,360   $—   $14,012 
Equity investments included in current assets   40,225    2,209    —    42,434 
Equity investments included in noncurrent assets   —   —    2,465    2,465 
TOTAL  $41,877   $14,569   $2,465   $58,911 
Contingent consideration included in:        
Other current liabilities (see Note 6)  $—   $—   $(628)  $(628)
Other noncurrent liabilities (see Note 6)   —    —   (397)  (397)
TOTAL  $—   $—   $(1,025)  $(1,025)
                     
July 31, 2020                    
Debt securities  $2,498   $15,865   $—   $18,363 
Equity investments included in current assets   5,964    —    —    5,964 
Equity investments included in noncurrent assets   —    —    3,825    3,825 
TOTAL  $8,462   $15,865   $3,825   $28,152 
Contingent consideration included in other noncurrent liabilities (see Note 6)  $—   $—   $(396)  $(396)
Schedule of Assets Measured at Fair Value On a Recurring Basis Using Significant Unobservable Inputs (level 3)

The following tables summarize the change in the balance of the Company’s assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3):

 

Year ended July 31,
(in thousands)		  2021   2020 
Balance, beginning of period  $3,825   $3,619 
Purchase of Rafael Holdings, Inc. warrant   354    — 
Exercise of Rafael Holdings, Inc. warrant   (380)   — 
Redemption for Visa mandatory release assessment   (1,870)   — 
Total gains included in “Other income (expense), net”   536    206 
BALANCE, END OF PERIOD  $2,465   $3,825 
           
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the period  $—   $— 
Schedule of Liabilities Measured at Fair Value On a Recurring Basis Using Significant Unobservable Inputs (level 3)

The following tables summarize the change in the balance of the Company’s liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3):

 

Year ended July 31,
(in thousands)		  2021   2020 
Balance, beginning of period  $396   $— 
Transfer into Level 3 from acquisitions (see Note 6)   628    375 
Total losses included in “Foreign currency translation adjustments”   1    21 
BALANCE, END OF PERIOD  $1,025   $396 
           
Change in unrealized gains or losses for the period included in earnings for liabilities at the end of the period  $—   $—