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Discontinued Operations - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 0 Months Ended | 12 Months Ended |  | 12 Months Ended | 1 Months Ended | 12 Months Ended
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Dec. 31, 2013 segment | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 05, 2013 Contract Manufacturing [Member] | Dec. 31, 2013 HFC business [Member] | Dec. 31, 2012 HFC business [Member] | Dec. 31, 2011 HFC business [Member] | Mar. 29, 2013 HFC business [Member] | Dec. 31, 2013 Aurora [Member] | Mar. 05, 2013 Aurora [Member] HFC business [Member] | Dec. 31, 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 |
Net gain from sale of HFC business | 14,663 | 0 | 0 |  | 14,663 | 0 | 0 |  |  |  | 14,663
Number of reportable segments | 1 |  |  |  |  |  |  |  |  |  |
Transition services agreement, term |  |  |  | 5 months |  |  |  |  |  |  |
Total TSA billing to Aurora |  |  |  |  |  |  |  |  | 977 |  |
Carrying value of goodwill based on the fair value | $ 14,547 | $ 0 |  |  | $ 14,547 |  |  | $ 14,500 |  |  |

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