Segment and Geographic Information - Information Regarding Long-Lived Assets in Geographic Areas (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Long-lived assets:
Total long-lived assets	$ 1,678,430	$ 1,560,929
United States [Member]
Long-lived assets:
Total long-lived assets	1,279,147	1,275,482
United Kingdom [Member]
Long-lived assets:
Total long-lived assets	337,697	229,555
Asia [Member]
Long-lived assets:
Total long-lived assets	25,563	23,154
France [Member]
Long-lived assets:
Total long-lived assets	5,844	5,540
Other Americas [Member]
Long-lived assets:
Total long-lived assets	24,469	22,246
Other Europe/MEA [Member]
Long-lived assets:
Total long-lived assets	$ 5,710	$ 4,952