|
Intangible Assets (Details 2) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Expected annual amortization expense related to amortizable intangible assets | ||
| Nine months ending December 31, 2013 | $ 6,096 | |
| 2014 | 7,834 | |
| 2015 | 7,493 | |
| 2016 | 6,659 | |
| 2017 | 6,276 | |
| 2018 | 6,105 | |
| Thereafter | 32,998 | |
| Net Book Value/Total expected amortization expense | $ 73,461 | $ 67,768 |