Corporate Restructuring and Other Organizational Changes - Components of Corporate Restructuring and Other Reorganization Activities from Recent Acquisitions (Detail) - Facility Closures [Member] $ in Thousands	6 Months Ended
Jun. 30, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 4,559
Restructuring charges incurred	363
Amounts paid during the period	(622)
Foreign currency translation	126
Ending balance	$ 4,426

Corporate Restructuring and Other Organizational Changes - Components of Corporate Restructuring and Other Reorganization Activities from Recent Acquisitions (Detail) - Facility Closures [Member]
$ in Thousands

6 Months Ended

Jun. 30, 2017

USD ($)

Restructuring Cost and Reserve [Line Items]

Beginning balance

$ 4,559

Restructuring charges incurred

363

Amounts paid during the period

(622)

Foreign currency translation

126

Ending balance

$ 4,426