|
Commitments and Contingencies (Details 3) (USD $)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
| Lease obligations for office and storage facilities, including amounts of escalating operating lease rental payments | |||
| 2012 | $ 13,152,000 | ||
| 2013 | 13,119,000 | ||
| 2014 | 11,429,000 | ||
| 2015 | 10,715,000 | ||
| 2016 | 10,314,000 | ||
| Thereafter | 71,107,000 | ||
| Total | 129,836,000 | ||
| Rent expense, net of sublease rentals | 9,200,000 | 6,200,000 | 6,500,000 |
| Sublease rentals | $ 200,000 | $ 200,000 | $ 300,000 |
|
Minimum
|
|||
| Operating leases | |||
| Period of operating leases (in years) | 3 | ||
| Number of renewal options | 1 | ||
|
Maximum
|
|||
| Operating leases | |||
| Period of operating leases (in years) | 10 | ||