|
Property and Equipment (Details) (USD $)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
| Property and Equipment | |||
| Property and equipment, gross | $ 57,764,000 | $ 53,861,000 | |
| Less accumulated depreciation and amortization | (47,392,000) | (43,646,000) | |
| Property and equipment, net | 10,372,000 | 10,215,000 | |
| Depreciation expense | 3,800,000 | 3,900,000 | 4,300,000 |
|
Computer equipment
|
|||
| Property and Equipment | |||
| Property and equipment, gross | 3,158,000 | 2,473,000 | |
|
Software
|
|||
| Property and Equipment | |||
| Property and equipment, gross | 4,628,000 | 4,592,000 | |
|
Furniture and fixtures
|
|||
| Property and Equipment | |||
| Property and equipment, gross | 3,821,000 | 3,689,000 | |
|
Laboratory equipment
|
|||
| Property and Equipment | |||
| Property and equipment, gross | 28,894,000 | 27,006,000 | |
|
Leasehold improvements
|
|||
| Property and Equipment | |||
| Property and equipment, gross | $ 17,263,000 | $ 16,101,000 | |