|
Description of the Business and Basis of Presentation (Details) (USD $)
|
1 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Jul. 31, 2011
|
Jun. 30, 2011
|
Jan. 31, 2013
item
|
Jan. 31, 2012
|
|
| Initial Public Offering | ||||
| Shares of common stock issued in initial public offering | 14,684,000 | |||
| Sale price (in dollar per share) | $ 16.00 | $ 16.00 | ||
| Number of shares of common stock issued | 350,000 | 6,000,682 | ||
| Public offering of common stock held by selling stockholders (in shares) | 8,683,318 | |||
| Aggregate proceeds from initial public offering | $ 94,500,000 | $ 90,632,000 | ||
| Offering expenses | $ 3,900,000 | |||
| Number of common shares issued on outstanding redeemable convertible preferred stock conversion | 137,542,912 | |||
| Number of shares of common stock issued on exercise of warrant | 154,938 | |||
| Segments | ||||
| Number of operating segments | 1 | |||
| X | ||||||||||
|
- Definition
Represents the number of shares sold by the entity's stockholders during the period in conjunction with a public offering. No definition available.
|
| X | ||||||||||
|
- Definition
Represents the number of shares issued by the entity in an initial public offering including shares sold by the entity's stockholders. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Represents the offering expense of the initial public offering. No definition available.
|
| X | ||||||||||
|
- Definition
The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of shares issued for each share of convertible preferred stock that is converted. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. No definition available.
|
| X | ||||||||||
|
- Definition
The cash inflow associated with the amount received from entity's first offering of stock to the public. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Price of a single share of a number of saleable stocks of a company. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|