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Employee Benefit Plans and Stock-based Compensation - Additional Information (Detail) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 27, 2020 | Mar. 29, 2019 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Exercise of Option, Tax Benefit | $ 0 | $ 0 |
Defined Benefit Plan, Benefit Obligation | 5,200,000 |  | $ 5,300,000
Liability, Defined Benefit Pension Plan, Current | 100,000 |  |
Liability, Defined Benefit Pension Plan, Noncurrent | $ 5,100,000 |  |
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 | 109,000 | 122,000 |
Dividend, Share-based Payment Arrangement, Cash | 0 |  |
Total stock-based compensation | $ 6,259,000 | $ 2,113,000 |
Employee Stock Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common Stock, Capital Shares Reserved for Future Issuance | 800,000 |  |
Discount Percentage On Purchase Of Stock | 15.00% |  |
Share-based Payment Arrangement, Option [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Common Stock, Capital Shares Reserved for Future Issuance | 3,700,000 |  |
Grants in Period, Number of Shares | 0 |  |
Performance-Based RSU Awards to Settle Incentive Bonus Payments [Member] |  |  |
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, Grants in Period | 472,247 | 0 |
Total stock-based compensation | $ 3,000,000 |  |
Performance Shares [Member] |  |  |
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, Grants in Period | 67,910 |  |
Total stock-based compensation | $ 400,000 |  |
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ 800,000 |  |
PerformanceBased RSU Awards 2019 [Member] |  |  |
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, Grants in Period | 40,000 |  |
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ 400,000 |  |
Market-based awards [Member] |  |  |
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, Grants in Period | 182,830 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period | 3 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Awards, Grants in Period, Fair Value | $ 1,100,000 |  |
Total stock-based compensation | 100,000 |  |
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ 1,800,000 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | 0 |  |
Market Based Award 2019 [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ 700,000 |  |
Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 18,700,000 |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 2 years 2 months 1 day |  |
TVN [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Payment for Pension and Other Postretirement Benefits | $ 0 |  |
Call Option [Member] | Employee Stock Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of fair market value of Common Stock to purchase shares | 85.00% |  |
Put Option [Member] | Employee Stock Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of fair market value of Common Stock to purchase shares | 15.00% |  |

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