Segment and Geographic Information - Information Regarding Long Lived Assets in the Geographic Areas (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Long-lived assets:
Total long-lived assets	$ 549,904	$ 559,368
U.S. [Member] | Reportable Geographical Components [Member]
Long-lived assets:
Total long-lived assets	324,114	319,185
U.K. [Member] | Reportable Geographical Components [Member]
Long-lived assets:
Total long-lived assets	141,718	148,922
Asia [Member] | Reportable Geographical Components [Member]
Long-lived assets:
Total long-lived assets	48,231	52,675
France [Member] | Reportable Geographical Components [Member]
Long-lived assets:
Total long-lived assets	10,670	12,310
Other Americas [Member] | Reportable Geographical Components [Member]
Long-lived assets:
Total long-lived assets	14,930	16,066
Other Europe/MEA [Member] | Reportable Geographical Components [Member]
Long-lived assets:
Total long-lived assets	$ 10,241	$ 10,210