Segment and Related Information - Summary of Property, Plant and Equipment and Other Long Lived Assets in Geographical Area (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 27, 2014	Dec. 28, 2013
Property, plant and equipment:
Net property, plant and equipment	$ 31,854	$ 35,796
Goodwill and other intangible assets:
Goodwill and other intangible assets, net	96,219	116,628
United States [Member]
Property, plant and equipment:
Net property, plant and equipment	18,986	21,464
Goodwill and other intangible assets:
Goodwill and other intangible assets, net	17,241	17,698
Germany [Member]
Property, plant and equipment:
Net property, plant and equipment	7,484	8,973
Goodwill and other intangible assets:
Goodwill and other intangible assets, net	38,527	51,032
Philippines [Member]
Property, plant and equipment:
Net property, plant and equipment	2,721	3,278
Rest of the World [Member]
Property, plant and equipment:
Net property, plant and equipment	2,663	2,081
Goodwill and other intangible assets:
Goodwill and other intangible assets, net	984	1,089
Switzerland [Member]
Goodwill and other intangible assets:
Goodwill and other intangible assets, net	25,921	32,513
Malaysia [Member]
Goodwill and other intangible assets:
Goodwill and other intangible assets, net	6,988	7,738
Singapore [Member]
Goodwill and other intangible assets:
Goodwill and other intangible assets, net	$ 6,558	$ 6,558