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Income (Loss) Per Share - Anti-dilutive Securities (Detail) - $ / shares | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Apr. 01, 2016 | Dec. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Potentially dilutive equity awards outstanding |  | 8,574,000 | 7,379,000 |
Potential Common Shares Upon Notes Conversion If Only Settled In Shares |  | 22,304,348 |  |
Debt Instrument, Convertible, Conversion Price |  | $ 5.75 |  | $ 5.75
Stock Options [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Potentially dilutive equity awards outstanding |  | 4,892,000 | 5,548,000 |
Restricted Stock Units (RSUs) |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Potentially dilutive equity awards outstanding |  | 2,707,000 | 1,772,000 |
Employee Stock Purchase Plan |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Potentially dilutive equity awards outstanding |  | 193,000 | 59,000 |
Warrant [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Potentially dilutive equity awards outstanding | [1] | 782,000 | 0 |
[1] | On September 26, 2016, in connection with the execution of a product supply agreement pursuant to which an affiliate of Comcast Corporation (together with Comcast Corporation, “Comcast”) may, in its sole discretion, purchase from the Company licenses to certain of the Company’s software products, the Company granted Comcast a warrant to purchase shares of its common stock. (See Note 15, “Warrants” for additional information).

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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