|
Results of Operations (Details 2) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2012
|
Jun. 30, 2011
|
Jun. 30, 2012
|
Jun. 30, 2011
|
|
| Computation of total comprehensive loss | ||||
| Net loss | $ (5,140) | $ (2,246) | $ (10,317) | $ (4,185) |
| Changes in unrealized gain (loss) on marketable securities | (2) | 24 | (31) | 39 |
| Comprehensive loss | $ (5,142) | $ (2,222) | $ (10,348) | $ (4,146) |