XML 27 R46.htm IDEA: XBRL DOCUMENT v2.4.0.6
Description Of Business And Summary Of Significant Accounting Policies - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2012
Y
Segment
Dec. 31, 2011
Dec. 31, 2010
Description Of Business And Summary Of Significant Accounting Policies [Line Items]        
Number of business segments   5    
Advertising costs   $ 21,800,000 $ 23,300,000 $ 20,700,000
Restricted cash 1,190,000 1,190,000 10,213,000  
Provision for doubtful accounts   14,179,000 12,586,000 10,720,000
Forgivable loans, forgiveness period, minimum   1    
Forgivable loans, forgiveness period, maximum   10    
Goodwill impairment charge 110,387,000 110,387,000    
Unamortized capitalized software cost 12,700,000 12,700,000 9,300,000  
Amortization of capitalized software cost   3,700,000 2,600,000 1,700,000
Deferred rent $ 40,300,000 $ 40,300,000 $ 43,700,000  
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