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Fair Value Measurements for Assets at Fair Value on Recurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Indemnification assets:    
Software cost reimbursement $ 3,586 $ 6,099
Fair Value, Measurements, Recurring | Level 1
    
Indemnification assets:    
Software cost reimbursement      
Fair Value, Measurements, Recurring | Level 2
    
Indemnification assets:    
Software cost reimbursement      
Fair Value, Measurements, Recurring | Level 3
    
Indemnification assets:    
Software cost reimbursement $ 3,586 $ 6,099