General (Details 4) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Deferred Revenue    
Total $ 1,470 $ 10
Acquisition and Integration
   
Deferred Revenue    
Legal, accounting and due diligence fees 278 10
Severance 1,179  
Integration costs 13  
Total $ 1,470 $ 10