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Restructuring - Summary of Restructuring Liability (Detail)
$ in Thousands
 6 Months Ended
Jun. 30, 2017
USD ($)
Restructuring Reserve [Roll Forward]  
Balance at December 31, 2016 $ 1,043
Costs Incurred 2,252
Payments (1,589)
Balance at June 30, 2017 1,706
Cumulative Costs Incurred to Date 7,248
2015 Initiatives | Employee Severance Costs  
Restructuring Reserve [Roll Forward]  
Balance at December 31, 2016 455
Costs Incurred 0
Payments (277)
Balance at June 30, 2017 178
Cumulative Costs Incurred to Date 4,130
2015 Initiatives | Facility Exit Related Costs  
Restructuring Reserve [Roll Forward]  
Balance at December 31, 2016 588
Costs Incurred 431
Payments (227)
Balance at June 30, 2017 792
Cumulative Costs Incurred to Date 1,297
2017 Initiatives | Employee Severance Costs  
Restructuring Reserve [Roll Forward]  
Balance at December 31, 2016 0
Costs Incurred 1,652
Payments (1,085)
Balance at June 30, 2017 567
Cumulative Costs Incurred to Date 1,652
2017 Initiatives | Other Related Costs  
Restructuring Reserve [Roll Forward]  
Balance at December 31, 2016 0
Costs Incurred 169
Payments 0
Balance at June 30, 2017 169
Cumulative Costs Incurred to Date $ 169