Restricted Cash	12 Months Ended
Jan. 31, 2013
Restricted Cash	2. Restricted Cash The Company had a certificate of deposit of $0.5 million as of January 31, 2012. The certificate of deposit was in Taiwan Cooperative Bank and was pledged in connection with a request from an application for Taiwan government research and development grants. The pledge was restricted for use until December 2012 and had been recorded as restricted cash on the consolidated balance sheet as of January 31, 2012. There was no material restricted cash recorded as of January 31, 2013.

2. Restricted Cash

The Company had a certificate of deposit of $0.5 million as of January 31, 2012. The certificate of deposit was in Taiwan Cooperative Bank and was pledged in connection with a request from an application for Taiwan government research and development grants. The pledge was restricted for use until December 2012 and had been recorded as restricted cash on the consolidated balance sheet as of January 31, 2012. There was no material restricted cash recorded as of January 31, 2013.