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Employee Benefit Plans and Stock-based Compensation - Additional Information (Detail)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 09, 2016
shares
Jul. 01, 2016
USD ($)
$ / shares
shares
Jul. 03, 2015
USD ($)
$ / shares
Jul. 01, 2016
USD ($)
$ / shares
shares
Jul. 03, 2015
USD ($)
$ / shares
Dec. 31, 2015
Feb. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Increase in authorized shares for ESPP | shares       2,000,000      
Intrinsic value of options exercised     $ 300,000   $ 1,600,000    
Other Payments to Acquire Businesses   $ 2,900,000          
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate   2.00%   2.00%      
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax   $ 0   $ 0      
Pension and Other Postretirement Benefit Contributions   0          
Defined Benefit Plan, Net Periodic Benefit Cost   100,000   $ 133,000      
Discretionary contributions of plan       25.00%      
Percent of employees' gross pay eligible for matching       4.00%      
Maximum contribution amount per participant       $ 1,000      
Contributions in period       241,000 $ 242,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized   $ 10,400,000   $ 10,400,000      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition   1 year 9 months 18 days          
Discount Percentage On Purchase Of Stock   15.00%          
Percentage of fair market value of Common Stock to purchase shares   85.00%          
Value Of Stock Purchase Right Percentage Of Put Option   15.00%          
Stock Options [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares   $ 1.07 $ 2.44 $ 0.97 $ 2.63    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   $ 400,000 $ 600,000 $ 1,400,000 $ 1,900,000    
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options   0 120,000 0 22,000    
Restricted Stock Units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value   $ 500,000 $ 1,600,000 $ 7,100,000 $ 7,600,000    
Employee Stock Purchase Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Increase in authorized shares for ESPP | shares 1,500,000            
Common Stock, Capital Shares Reserved for Future Issuance | shares   906,390   906,390      
TVN [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Business Combination Assumed Equity Benefit Plan             2
Fair Value of Employee Equity Benefit Plan Liabilities   $ 18,524,000   $ 18,524,000      
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate   2.00%   2.00%      
TVN [Member] | Restricted Stock Units (RSUs)              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Increase in authorized shares for ESPP | shares   1,750,000          
Stock Plan 1995 [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Increase in authorized shares for ESPP | shares 2,000,000            
Euro Zone AA Rated [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Long-term Euro zone AA rated, Term           10 years  
Long-term Euro zone AA rated 10 years corporate bonds yield           2.00%