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Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Note
Dec. 31, 2013
Y
Segment
Note
Dec. 31, 2012
Note
Dec. 31, 2011
Description Of Business And Summary Of Significant Accounting Policies [Line Items]          
Number of reportable business segments     5    
Advertising costs     $ 20,700,000 $ 21,800,000 $ 23,300,000
Short-term investments   0 3,300,000 0  
Restricted cash   1,200,000 900,000 1,200,000  
Provision for doubtful accounts     13,335,000 14,179,000 12,586,000
Forgivable loans, forgiveness period, minimum     1    
Forgivable loans, forgiveness period, maximum     10    
Notes outstanding   376 340 376  
New notes granted to Employees     47,000,000 61,400,000  
Amortization of forgivable loan expense     35,100,000 32,800,000 35,100,000
Goodwill impairment charges 83,752,000 110,387,000 83,752,000 110,387,000  
Unamortized capitalized software cost   12,700,000 12,900,000 12,700,000  
Amortization of capitalized software cost     5,800,000 3,700,000 2,600,000
Deferred rent   $ 40,300,000 $ 41,000,000 $ 40,300,000  
Minimum
          
Description Of Business And Summary Of Significant Accounting Policies [Line Items]          
Definite-lived intangible assets amortization period     1 year    
Maximum
          
Description Of Business And Summary Of Significant Accounting Policies [Line Items]          
Definite-lived intangible assets amortization period     15 years    
Lease provisions for renewal options (In years)     5    
Furniture, Equipment, And Internal-Use Software | Minimum
          
Description Of Business And Summary Of Significant Accounting Policies [Line Items]          
Estimated useful of furniture, equipment and internal use software (in years)     3 years    
Furniture, Equipment, And Internal-Use Software | Maximum
          
Description Of Business And Summary Of Significant Accounting Policies [Line Items]          
Estimated useful of furniture, equipment and internal use software (in years)     7 years    
Software and Software Development Costs
          
Description Of Business And Summary Of Significant Accounting Policies [Line Items]          
Estimated useful of furniture, equipment and internal use software (in years)     3 years