Discontinued Operations - Additional Information (Detail) (USD $)			0 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	1 Months Ended	3 Months Ended	6 Months Ended
	Sep. 27, 2013	Dec. 31, 2012	Mar. 05, 2013 Contract Manufacturing [Member]	Mar. 05, 2013 Other Product Manufacturing Support Services [Member]	Mar. 29, 2013 HFC business [Member]	Sep. 27, 2013 HFC business [Member]	Sep. 27, 2013 Aurora [Member]	Sep. 27, 2013 Aurora [Member]	Mar. 05, 2013 Aurora [Member] HFC business [Member]	Mar. 29, 2013 Aurora [Member] HFC business [Member]	Jun. 28, 2013 Aurora [Member] HFC business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross proceeds from sale of cable access HFC business						$ 46,000,000			$ 46,000,000
Net gain from sale of HFC business										15,000,000	14,800,000
Transition services agreement, term			5 months	2 months
Adjustments on inventory and fixed assets											(200,000)
Total TSA billing to Aurora							48,000	977,000
Prepaid expenses and other current assets	14,757,000	23,636,000					0	0
Receivables from customers							200,000	200,000
Accrued liabilities							200,000	200,000
Payable to third party vendors for purchases							0	0
Goodwill impairment loss					0
Carrying value of goodwill based on the fair value	$ 14,547,000				$ 14,547,000	$ 14,547,000