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Commitments, Contingent Liabilities and Other Matters (Details) (USD $)
 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Sep. 30, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Sep. 22, 2011
store
Feb. 29, 2012
Claims by former controlling shareholders of LFIN
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
Commitments, Contingent Liabilities and Other Matters                  
Total rental expense   $ 8,300,000 $ 12,200,000 $ 12,800,000          
Future minimum lease payments due under non-cancellable operating leases                  
2013   4,580,000              
2014   3,330,000              
2015   2,209,000              
2016   1,628,000              
2017   519,000              
Thereafter   431,000              
Total   12,697,000              
Minimum period for non-cancellable sub-leases   1 year              
Aggregate future minimum rentals to be received under non-cancellable sub-leases   61,900,000              
Approximate cash maintained to satisfy regulatory reserve requirements   84,070,000 73,325,000            
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    
Payment made to former controlling shareholders of LFIN           24,400,000      
Number of in store branches being closed         55        
Estimated combined charges of restructuring plan before tax $ 5,360,000