Costs Associated with Exit or Disposal Activities - Cumulative Total Costs Expected and Incurred to Date Related to Cash and Non-Cash Expenditures Resulting from Exit Plan (Detail) - Americas [Member] $ in Thousands	Dec. 31, 2019 USD ($)
2018 Exit Plan [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	$ 17,411
2018 Exit Plan [Member] | Lease Obligations and Facility Exit Costs [Member] | General and Administrative [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	7,073
2018 Exit Plan [Member] | Severance and Related Costs [Member] | General and Administrative [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	1,037
2018 Exit Plan [Member] | Severance and Related Costs [Member] | Direct Salaries and Related Costs [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	3,426
2018 Exit Plan [Member] | Non-Cash Impairment Charges [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	5,875
2019 Exit Plan [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	4,172
2019 Exit Plan [Member] | Severance and Related Costs [Member] | General and Administrative [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	2,155
2019 Exit Plan [Member] | Severance and Related Costs [Member] | Direct Salaries and Related Costs [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	191
2019 Exit Plan [Member] | Non-Cash Impairment Charges [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	1,582
2019 Exit Plan [Member] | Other Non-Cash Charges [Member]
Restructuring Cost And Reserve [Line Items]
Cumulative Costs Expected and Incurred to Date	$ 244