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Summary of Significant Accounting Policies - Fair Value Hierarchy for Financial Assets (Detail) - Recurring - USD ($)
$ in Thousands
Oct. 01, 2016
Jan. 02, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Adjusted Basis Cost $ 125,988 $ 132,317
Gross Unrealized Gains 0 0
Gross Unrealized (Losses) 0 0
Estimated Fair Value 125,988 132,317
Cash and Cash Equivalents 125,988 132,317
Cash    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Adjusted Basis Cost 62,488 57,168
Gross Unrealized Gains   0
Gross Unrealized (Losses) 0 0
Estimated Fair Value 62,488 57,168
Cash and Cash Equivalents 62,488 57,168
Level 1:    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Adjusted Basis Cost 63,500 75,149
Gross Unrealized Gains 0 0
Gross Unrealized (Losses) 0 0
Estimated Fair Value 63,500 75,149
Cash and Cash Equivalents 63,500 75,149
Level 1: | Bank Time Deposits    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Adjusted Basis Cost 62,500 55,000
Gross Unrealized Gains 0 0
Gross Unrealized (Losses) 0 0
Estimated Fair Value 62,500 55,000
Cash and Cash Equivalents 62,500 55,000
Level 1: | Money Market Funds    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Adjusted Basis Cost 1,000 20,149
Gross Unrealized Gains 0 0
Gross Unrealized (Losses) 0 0
Estimated Fair Value 1,000 20,149
Cash and Cash Equivalents 1,000 20,149
Level 2:    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Adjusted Basis Cost 0 0
Gross Unrealized Gains 0 0
Gross Unrealized (Losses) 0 0
Estimated Fair Value 0 0
Cash and Cash Equivalents 0 0
Level 3:    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Adjusted Basis Cost 0 0
Gross Unrealized Gains 0 0
Gross Unrealized (Losses) 0 0
Estimated Fair Value 0 0
Cash and Cash Equivalents $ 0 $ 0