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Restructuring - Summary of Restructuring Liability (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Restructuring Cost and Reserve [Line Items]  
Balance at December 31, 2013 $ 881
Accruals 1,166
Payments (1,006)
Balance at March 31, 2014 1,041
Employee Severance Costs [Member]
  
Restructuring Cost and Reserve [Line Items]  
Balance at December 31, 2013 0
Accruals 1,094
Payments (763)
Balance at March 31, 2014 331
Facility Exit Related Costs [Member]
  
Restructuring Cost and Reserve [Line Items]  
Balance at December 31, 2013 881
Accruals 72
Payments (243)
Balance at March 31, 2014 $ 710