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Note 8 - Restricted Cash (Tables)
3 Months Ended
Oct. 31, 2022
Notes Tables  
Restrictions on Cash and Cash Equivalents [Table Text Block]
  

October 31, 2022

  

October 31, 2021

 

Cash and cash equivalents

 $20,965  $96,304 

Restricted cash

  7,251   2,038 

Total cash, cash equivalents and restricted cash

 $28,216  $98,342