Information about Geographic Areas - Long-Lived Assets by Geographic Area (Detail) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Jan. 31, 2014
Long-lived assets by geography
Total long-lived assets	$ 2,494	$ 2,445
North America [Member]
Long-lived assets by geography
Total long-lived assets	1,575	1,341
Europe [Member]
Long-lived assets by geography
Total long-lived assets	339	509
Asia Pacific [Member]
Long-lived assets by geography
Total long-lived assets	$ 580	$ 595