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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
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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 |  |  |  |  |

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