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Presentation Of Interim Financial Statements (BFC Share Repurchase Program) (Details) - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Apr. 30, 2016
Jun. 30, 2016
Jun. 30, 2015
Mar. 29, 2016
Sep. 21, 2009
Authorized share repurchase program         20,000,000
Share repurchase program, value         $ 10,000
Purchase and retirement, value   $ 3,029 $ 174    
Class A Common Stock [Member]          
Authorized share repurchase program       1,000,000  
Purchase and retirement, shares 1,000,000        
Purchase and retirement, value $ 3,000