Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Name Accounting Standards Codification

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended				3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Dec. 31, 2012	Dec. 31, 2011	Sep. 29, 2012 Laserband LLC [Member]	Sep. 28, 2013 Laserband LLC [Member]	Dec. 31, 2012 Laserband LLC [Member]
Goodwill [Line Items]
Goodwill	$ 94,942		$ 94,942		$ 94,942	$ 79,703
Asset impairment charge	0	9,114	0	9,114
Acquisition - LaserBand							24,353	0	24,353
Impairment Charges Net	$ 0		$ 0		$ 9,114	$ 101,028