Net Sales by Geographic Area (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net sales	$ 378,924	$ 383,588	$ 316,113
Long-Lived Assets	78,008	81,769	91,763
United States [Member]
Net sales	251,695	239,101	196,628
Long-Lived Assets	45,979	48,803	54,945
France [Member]
Net sales	52,517	58,974	51,079
Long-Lived Assets	17,463	17,621	18,757
Germany [Member]
Net sales	71,896	81,424	65,019
Long-Lived Assets	13,542	14,065	16,158
Others [Member]
Net sales	2,816	4,089	3,387
Long-Lived Assets	$ 1,024	$ 1,280	$ 1,903