Restructuring and Other Related Charges (Benefits) - Activity Related to Restructuring Events (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Restructuring Reserve [Roll Forward]
Balance	$ 497
2014 (benefits) provisions, net	1,871
Cash utilized	(853)
Foreign currency exchange rate effect	16
Balance	1,531
Other Prior Restructuring Events [Member] | Facilities [Member]
Restructuring Reserve [Roll Forward]
Balance	185
2014 (benefits) provisions, net	(3)
Cash utilized	(30)
Foreign currency exchange rate effect	0
Balance	152
Other Prior Restructuring Events [Member] | Workforce [Member]
Restructuring Reserve [Roll Forward]
Balance	312
2014 (benefits) provisions, net	0
Cash utilized	0
Foreign currency exchange rate effect	11
Balance	323
2014 Restructuring Event [Member] | Workforce [Member]
Restructuring Reserve [Roll Forward]
Balance	0
2014 (benefits) provisions, net	1,874
Cash utilized	(823)
Foreign currency exchange rate effect	5
Balance	$ 1,056