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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

X

- 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
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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