XML 61 R45.htm IDEA: XBRL DOCUMENT v2.3.0.15
Treasury Stock (Details) (USD $)
In Thousands, except Share data
9 Months Ended13 Months Ended
Sep. 30, 2011
Sep. 30, 2011
Jul. 28, 2011
Treasury Stock (Textual) [Abstract]   
Authorized to repurchase common stock$ 25,000  
Expiration date on the repurchase authorizationsSep. 30, 2012Sep. 30, 2012
Common stock acquired, shares1,5571,607 
Aggregate cost shares of common stock22,37123,153 
Remaining authorized repurchase amount26,847  
Additional amount authorized by board of directors  25,000
Authorized to repurchase common stock including Additional repurchase  $ 50,000