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Summary of Significant Accounting Policies - Fair Value Hierarchy for Financial Assets (Detail) - Recurring - USD ($) $ in Thousands | Jan. 02, 2016 | Jan. 03, 2015
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Amortized Cost Basis | $ 132,317 | $ 134,453
Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Estimated Fair Value | 132,317 | 134,453
Cash, Cash Equivalents | 132,317 | 134,453
Cash |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Amortized Cost Basis | 57,168 | 92,888
Accumulated Gross Unrealized Gain, before Tax |  | 0
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Estimated Fair Value | 57,168 | 92,888
Cash, Cash Equivalents | 57,168 | 92,888
Fair Value, Inputs, Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Amortized Cost Basis | 75,149 | 41,565
Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Estimated Fair Value | 75,149 | 41,565
Cash, Cash Equivalents | 75,149 | 41,565
Fair Value, Inputs, Level 1 | Bank Time Deposits |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Amortized Cost Basis | 55,000 | 40,500
Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Estimated Fair Value | 55,000 | 40,500
Cash, Cash Equivalents | 55,000 | 40,500
Fair Value, Inputs, Level 1 | Money Market funds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Amortized Cost Basis | 20,149 | 1,065
Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Estimated Fair Value | 20,149 | 1,065
Cash, Cash Equivalents | 20,149 | 1,065
Fair Value, Inputs, Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Amortized Cost Basis | 0 | 0
Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Estimated Fair Value | 0 | 0
Cash, Cash Equivalents | 0 | 0
Fair Value, Inputs, Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Amortized Cost Basis | 0 | 0
Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Accumulated Gross Unrealized Loss, before Tax | 0 | 0
Estimated Fair Value | 0 | 0
Cash, Cash Equivalents | $ 0 | $ 0

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562 + Details
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- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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