Segment Reporting - Schedule of Assets by Geographic Segments (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Long-lived assets:
Total	$ 270,133	$ 270,203
United States [Member]
Long-lived assets:
Total	204,842	206,822
United Kingdom [Member]
Long-lived assets:
Total	4,359	4,581
Germany [Member]
Long-lived assets:
Total	57,441	55,269
Asia (Including Japan) [Member]
Long-lived assets:
Total	$ 3,491	$ 3,531