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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Thousands
3 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Schedule of Product Warranties [Line Items]    
Balances as of beginning of fiscal year $ 3,015 $ 2,810
Accruals for warranties 175 1,007
Acquired warranty liabilities 0 50
Warranty claims settled (323) (459)
Balances as of end of period $ 2,867 $ 3,408