Description of Business and Summary of Significant Accounting Policies - Immaterial Restatement of Prior Period Balances (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Apr. 03, 2020 |
Dec. 31, 2019 |
Sep. 27, 2019 |
Jun. 28, 2019 |
Mar. 29, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | ||||||||
| Decrease in retained earnings | $ (193,743) | $ (185,075) | $ (185,075) | |||||
| Net income | $ (8,668) | $ (7,074) | ||||||
| Decrease in diluted earnings per share (in dollars per share) | $ (0.74) | $ (0.62) | ||||||
| Correction | ||||||||
| Error Corrections and Prior Period Adjustments Restatement [Line Items] | ||||||||
| Decrease in retained earnings | $ 2,516 | 2,516 | ||||||
| Net income | $ 17 | $ 1,500 | ||||||
| Decrease in diluted earnings per share (in dollars per share) | $ (0.00) | $ 0.13 | $ (0.00) | $ (0.00) | $ 0.13 | $ 0.02 | $ 0.01 | |