|
Property and equipment (Schedule of property and equipment) (Details) (USD $)
In Thousands, unless otherwise specified |
Oct. 31, 2014
|
Jan. 31, 2014
|
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | $ 5,975 | $ 4,498 |
| Accumulated depreciation | (3,287) | (2,506) |
| Property and equipment, net | 2,688 | 1,992 |
|
Leasehold improvements
|
||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 482 | 329 |
|
Furniture and fixtures
|
||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 1,317 | 1,094 |
|
Computer equipment
|
||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | $ 4,176 | $ 3,075 |