Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Total Amounts of Gross Unrecognized Tax Benefits (Detail)

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Income Taxes - Reconciliation of Total Amounts of Gross Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2019
Jan. 31, 2018
Income Tax Disclosure [Abstract]    
Balance of gross unrecognized tax benefits, beginning of period $ 4,856 $ 5,093
Decrease due to expiration of statute of limitation (477) (389)
Effect of currency translation (61) 152
Balance of gross unrecognized tax benefits, end of period $ 4,318 $ 4,856