Goodwill and Other Long-Lived Assets - Additional Information (Detail) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2012	Jul. 01, 2012	Apr. 01, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011
Goodwill and Other Assets Disclosure [Line Items]
Number of reportable segments					3
Number of reporting units with goodwill					2
Impairment of goodwill	$ (200,000)			$ 0	$ 41,314,000	$ 0
Profit (loss) in operations	9,017,000			1,000,000	(58,177,000)	(10,682,000)
Impairment of Intangible Assets, Finite-lived	0	0	0
Voice Solutions | Supply Chain
Goodwill and Other Assets Disclosure [Line Items]
Impairment of goodwill					41,174,000
Number of goodwill impairment triggering events			2
Profit (loss) in operations			19,000,000
Voice Solutions | Healthcare
Goodwill and Other Assets Disclosure [Line Items]
Impairment of goodwill					140,000
Voice Solutions | Q1 Impairment [Member] | Supply Chain
Goodwill and Other Assets Disclosure [Line Items]
Impairment of goodwill	500,000	25,800,000	14,900,000
Voice Solutions | Q2 Impairment [Member] | Healthcare
Goodwill and Other Assets Disclosure [Line Items]
Impairment of goodwill		800,000			100,000
Goodwill impairment adjustment	$ 700,000