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v3.19.1

Changes in Accumulated Other Comprehensive Loss by Component, Net of Tax (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jan. 31, 2019 | Jan. 31, 2018 | Jan. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Beginning Balance | $ 1,300,903 | $ 1,313,084 | $ 1,137,227
Other comprehensive income (loss) before reclassifications | (16,430) | 23,453 |
Amounts reclassified from accumulated other comprehensive income (loss) | (22) | (35) |
Total other comprehensive (loss) income | (16,452) | 23,418 | (10,618)
Ending Balance | 1,489,098 | 1,300,903 | 1,313,084
Foreign Currency Translation |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Beginning Balance | (10,340) | (34,012) |
Other comprehensive income (loss) before reclassifications | (16,585) | 23,672 |
Total other comprehensive (loss) income | (16,585) | 23,672 |
Ending Balance | (26,925) | (10,340) | (34,012)
Unrealized Gains and (Losses) on available- for-Sale Securities |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Beginning Balance | (311) | (57) |
Other comprehensive income (loss) before reclassifications | 155 | (219) |
Amounts reclassified from accumulated other comprehensive income (loss) | (22) | (35) |
Total other comprehensive (loss) income | 133 | (254) |
Ending Balance | (178) | (311) | (57)
Accumulated Other Comprehensive Loss |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Beginning Balance | (10,651) | (34,069) | (23,451)
Ending Balance | $ (27,103) | $ (10,651) | $ (34,069)

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