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Discontinued Operations - Additional Information (Detail) (USD $) |  |  | 3 Months Ended |  | 3 Months Ended | 6 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended
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Jun. 28, 2013 | Dec. 31, 2012 | Mar. 29, 2013 HFC business [Member] | Jun. 28, 2013 HFC business [Member] | Jun. 28, 2013 Aurora [Member] | Jun. 28, 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 |  |
Net gain from sale of HFC business |  |  |  |  |  |  |  | 15,000,000 | 14,800,000
Adjustments on inventory and fixed assets |  |  |  |  |  |  |  |  | (200,000)
Total TSA billing to Aurora |  |  |  |  | 600,000 | 928,000 |  |  |
Prepaid expenses and other current assets | 19,727,000 | 23,636,000 |  |  | 45,000 | 45,000 |  |  |
Receivables from customers |  |  |  |  | 1,800,000 | 1,800,000 |  |  |
Accrued liabilities |  |  |  |  | 2,200,000 | 2,200,000 |  |  |
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 |  |  |  |  |

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- Definition Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph a -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 + Details
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