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Credit Facilities - Additional Information (Detail) - JPMorgan Chase [Member] - USD ($) | 9 Months Ended |
--- | --- | ---
Oct. 02, 2015 | Dec. 22, 2014
Commercial Letters of Credit [Member] | Maximum [Member] |  |
Line of Credit Facility [Line Items] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.75% |
Line of Credit Facility, Commitment Fee Amount | $ 100 |
Revolving Credit Facility [Member] |  |
Line of Credit Facility [Line Items] |  |
Percentage of Equity Interest Pledged as Collateral for Letter of Credit | 66.67% |
Line of Credit Facility, Current Borrowing Capacity |  | $ 20,000,000
Line of Credit Facility, Remaining Borrowing Capacity | $ 19,500,000 |
Borrowings under bank line of credit facility | $ 0 |
Credit facility collateral | Obligations under the Credit Agreement are secured only by a pledge of 66.67% of the Company’s equity interests in its foreign subsidiary, Harmonic International AG. Additionally, to the extent that the Company in the future forms any direct or indirect, domestic, material subsidiaries, those subsidiaries will be required to provide a guaranty of the Company’s obligations under the Credit Agreement. |
Line of Credit Facility, Threshold Consecutive Business Days | 5 days |
Debt Instrument, Fee Amount | $ 50,000 |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.25% |
Line of Credit, Covenant, Consolidated Cash and Marketable Securities Minimum | $ 35,000,000 |
Line of Credit Covenant, EBITDA, Minimum | 20,000,000 |
Revolving Credit Facility [Member] | Minimum [Member] |  |
Line of Credit Facility [Line Items] |  |
Consolidated Cash Threshold | 30,000,000 |
Standby letters of credit [Member] |  |
Line of Credit Facility [Line Items] |  |
Line of Credit Facility, Current Borrowing Capacity |  | $ 10,000,000
Line of Credit Facility, Remaining Borrowing Capacity | $ 500,000 |
Line of Credit Facility, Commitment Fee Percentage | 1.75% |
LIBOR [Member] | Revolving Credit Facility [Member] |  |
Line of Credit Facility [Line Items] |  |
LIBOR rate duration | LIBOR |
Adjusted LIBOR Rate, Variable Rate, Period End Month One | 1 month |
Adjusted LIBOR Rate, Variable Rate, Period End Month Two | 2 months |
Adjusted LIBOR Rate, Variable Rate, Period End Month Three | 3 months |
LIBOR [Member] | Revolving Credit Facility [Member] | Minimum [Member] |  |
Line of Credit Facility [Line Items] |  |
Line of Credit LIBOR margin | 2.50% |
Adjusted LIBOR Rate Applicable Margin Rate [Member] | Revolving Credit Facility [Member] |  |
Line of Credit Facility [Line Items] |  |
Line of Credit LIBOR margin | 1.75% |
Prime Rate [Member] | Revolving Credit Facility [Member] |  |
Line of Credit Facility [Line Items] |  |
LIBOR rate duration | prime |
Adjusted Prime Rate Applicable Margin Rate [Member] | Revolving Credit Facility [Member] |  |
Line of Credit Facility [Line Items] |  |
Line of Credit LIBOR margin | (1.30%) |

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- Definition Discussion of whether the borrowings under the credit facility are secured or unsecured and, if secured, a description of collateral (for example, accounts receivable less than 120 days old, finished goods inventory). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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