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Debt - Convertible Senior Notes (Details) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 06, 2021 USD ($) shares | Jun. 01, 2020 USD ($) D $ / shares | Jan. 01, 2022 USD ($) | Jan. 02, 2021 USD ($) | Mar. 06, 2017 USD ($)
Debt |  |  |  |  |
Loss on debt extinguishment |  |  | $ (3,370) | $ (4,060) |
0.625% Convertible Senior Notes (2025 Notes) |  |  |  |  |
Debt |  |  |  |  |
Principal amount |  | $ 535,000 |  |  |
Semi-annual interest rate |  | 0.625% | 0.625% |  |
Conversion rate, shares per $1,000 principal |  | 8.1980 |  |  |
Conversion, number of shares of common stock |  | 4,400 |  |  |
Initial conversion price | $ / shares |  | $ 121.98 |  |  |
Debt issuance costs |  | $ 10,400 |  |  |
0.625% Convertible Senior Notes (2025 Notes) | Conversion of Notes, Holders |  |  |  |  |
Debt |  |  |  |  |
Number of trading days within 30 trading day period | D |  | 20 |  |  |
Number of consecutive trading days | D |  | 30 |  |  |
Stock price trigger per share | $ / shares |  | $ 159.51 |  |  |
Stock price trigger, as a percentage of conversion price |  | 130.00% |  |  |
Number of consecutive business days after the 10 consecutive trading day period | D |  | 5 |  |  |
Number of consecutive trading days before the five consecutive business days | D |  | 10 |  |  |
Maximum threshold stock price, as a percentage of conversion price |  | 98.00% |  |  |
0.625% Convertible Senior Notes (2025 Notes) | Conversion of Notes, Company |  |  |  |  |
Debt |  |  |  |  |
Stock price trigger, as a percentage of conversion price |  | 130.00% |  |  |
Number of consecutive business days after the 10 consecutive trading day period | D |  | 20 |  |  |
Number of consecutive trading days before the five consecutive business days | D |  | 30 |  |  |
1.375% Convertible Senior Notes (2022 Notes) |  |  |  |  |
Debt |  |  |  |  |
Principal amount |  |  |  |  | $ 400,000
Semi-annual interest rate |  |  |  |  | 1.375%
1.375% Convertible Senior Notes (2022 Notes) | Conversion of Notes, Holders |  |  |  |  |
Debt |  |  |  |  |
Principal amount of notes for conversion | $ 130,400 |  |  |  |
Cash paid upon conversion | $ 130,400 |  |  |  |
Number of shares issued in connection with conversion | shares | 528,022 |  |  |  |
Debt amount redeemed | $ 10,200 |  |  |  |
1.375% Convertible Senior Notes (2022 Notes) | Conversion of Notes, Holders | Interest expense |  |  |  |  |
Debt |  |  |  |  |
Loss on debt extinguishment |  |  | $ 3,400 |  |
1.375% Convertible Senior Notes (2022 Notes) | Conversion of Notes, Company |  |  |  |  |
Debt |  |  |  |  |
Remaining principal amount | $ 140,600 |  |  |  |

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- Definition When testing, based upon the trading price of the debt, whether convertible debt may be converted by the debt holder, represents the percentage of the closing stock price which is multiplied by the number of shares underlying the debt in order to calculate the target that the debt price must stay below. + References No definition available. + Details
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