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Income Taxes - Reconciliation of Income Taxes by Jurisdiction (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2017 | Oct. 31, 2016 | Jul. 31, 2016 | Apr. 30, 2016 | Jan. 31, 2016 | Oct. 31, 2015 | Jul. 31, 2015 | Apr. 30, 2015 | Jan. 31, 2017 | Jan. 31, 2016 | Jan. 31, 2015
Loss before income taxes is attributable to the following jurisdictions: |  |  |  |  |  |  |  |  |  |  |
Domestic |  |  |  |  |  |  |  |  | $ (17,685) | $ (11,900) | $ (6,766)
Foreign |  |  |  |  |  |  |  |  | (13,654) | (15,859) | (3,420)
Loss before income taxes | $ (8,546) | $ (7,558) | $ (9,091) | $ (6,144) | $ (12,163) | $ (6,559) | $ (8,645) | $ (392) | (31,339) | (27,759) | (10,186)
Current: |  |  |  |  |  |  |  |  |  |  |
Domestic |  |  |  |  |  |  |  |  | 34 | (16) | 387
Foreign |  |  |  |  |  |  |  |  | 846 | 684 | 1,687
Total |  |  |  |  |  |  |  |  | 880 | 668 | 2,074
Deferred: |  |  |  |  |  |  |  |  |  |  |
Domestic |  |  |  |  |  |  |  |  | 40 | 10,762 | (4,230)
Foreign |  |  |  |  |  |  |  |  | 894 | (453) | 1,162
Total |  |  |  |  |  |  |  |  | 934 | 10,309 | (3,068)
Income tax expense (benefit) | $ 1,308 | $ (228) | $ 435 | $ 299 | $ 14,675 | $ (746) | $ (2,797) | $ (155) | $ 1,814 | $ 10,977 | $ (994)

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