Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Statement Of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1,348	$ 4,028
Preferred shares, par value	$ 0.0001	$ 0.0001
Preferred shares, shares authorized	10,000,000	10,000,000
Preferred shares, shares issued	0	0
Common shares, par value	$ 0.0001	$ 0.0001
Common shares, shares authorized	200,000,000	200,000,000
Common shares, shares issued	96,431,044	97,815,985
Common shares, shares outstanding	96,431,044	97,815,985

Amount of allowance for credit loss on accounts receivable, classified as current.

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