|
Income Taxes (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
|
|
| Income Taxes | ||||
| Income tax expense | $ 125 | $ 50 | $ 438 | $ 50 |