|
Stock-Based Compensation and Stock Incentive Plans (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Oct. 31, 2012
|
Oct. 31, 2011
|
Oct. 31, 2012
|
Oct. 31, 2011
|
|
| Stock-based compensation expense | $ 728 | $ 1,018 | $ 3,056 | $ 3,134 |
|
Cost Of Sales [Member]
|
||||
| Stock-based compensation expense | (85) | 140 | 109 | 380 |
|
Research and Development Expense [Member]
|
||||
| Stock-based compensation expense | 72 | 65 | 253 | 272 |
|
Selling and Marketing Expense [Member]
|
||||
| Stock-based compensation expense | (93) | 292 | 138 | 1,005 |
|
General and Administrative Expense [Member]
|
||||
| Stock-based compensation expense | $ 834 | $ 521 | $ 2,556 | $ 1,477 |