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Commitments, Contingent Liabilities and Other Tax Matters (Details) (USD $)
1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Sep. 30, 2011
Dec. 31, 2011
Y
Dec. 31, 2010
Dec. 31, 2009
Sep. 22, 2011
store
Dec. 31, 2010
Claims by former controlling shareholders of LFIN
Nov. 30, 2010
Claims by former controlling shareholders of LFIN
Dec. 31, 2004
Claims by former controlling shareholders of LFIN
Oct. 31, 2010
Purported class-action lawsuits
case
Oct. 31, 2010
Purported class-action lawsuits
Southern district of Texas
case
Oct. 31, 2010
Purported class-action lawsuits
Southern district of Florida
case
Commitments, Contingent Liabilities and Other Matters                      
Total rental expense   $ 12,200,000 $ 12,800,000 $ 12,600,000              
Future minimum lease payments due under non-cancellable operating leases                      
2012   6,670,000                  
2013   5,135,000                  
2014   3,962,000                  
2015   2,800,000                  
2016   2,164,000                  
Thereafter   2,741,000                  
Total   23,472,000                  
Minimum period for non-cancellable sub-leases (in years)   1                  
Aggregate future minimum rentals to be received under non-cancellable sub-leases   47,100,000                  
Approximate cash maintained to satisfy regulatory reserve requirements   73,325,000 67,745,000                
Commitments and Contingent Liabilities and Other Tax Matters, details                      
Loss contingency, amount             24,250,000 14,000,000      
Deposits made against tax refund litigations           24,400,000          
Loss contingency, number of cases pending                 2 1 1
Number of in store branches being closed         55            
Estimated combined charges of restructuring plan before tax $ 5,360,000