Stock-Based Compensation - Reserved Shares (Details) shares in Thousands	Dec. 30, 2017 shares
Stock-Based Compensation
Reserved shares of common stock for future issuance	4,050
2000 Stock Incentive Plan
Stock-Based Compensation
Reserved shares of common stock for future issuance	15
2009 Stock Incentive Plan
Stock-Based Compensation
Reserved shares of common stock for future issuance	2,827
2009 Employee Stock Purchase Plan
Stock-Based Compensation
Reserved shares of common stock for future issuance	1,208