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v3.21.2

Convertible Debt - Narratives (Details) |  |  | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 02, 2020 USD ($) | Sep. 13, 2019 USD ($) $ / shares | Jul. 02, 2021 USD ($) day $ / shares | Jun. 26, 2020 USD ($) | Dec. 31, 2020 USD ($) $ / shares
Debt Instrument [Line Items] |  |  |  |  |
Common Stock, Par or Stated Value Per Share | $ / shares |  |  | $ 0.001 |  | $ 0.001
Fair value of 2022 Notes used to settle 2020 Notes |  |  | $ 0 | $ 44,357,000 |
Convertible Note due 2022 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Face Amount | $ 37,700,000 |  | $ 37,707,000 |  | $ 37,707,000
Common Stock, Par or Stated Value Per Share | $ / shares |  |  | $ 0.001 |  |
Debt Instrument, Convertible, Conversion Ratio |  |  | 173.9978 |  |
Debt Conversion, Converted Instrument, Amount |  |  | $ 1,000 |  |
Debt Instrument, Convertible, Conversion Price | $ / shares |  |  | $ 5.75 |  |
Carrying amount of equity component | 8,300,000 |  |  |  |
Fair Value of Liability Component - Convertible Notes | 36,000,000.0 |  |  |  |
Debt Instrument, Unamortized Discount | $ 1,700,000 |  | $ 1,020,000 |  | 1,357,000
Debt Instrument, Interest Rate, Stated Percentage | 4.375% |  |  |  |
Convertible Note due 2022 | Stock price greater or equal 130 percent of Note Conversion Price [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Convertible, Threshold Trading Days | day |  |  | 20 |  |
Debt Instrument, Convertible, Threshold Consecutive Trading Days | day |  |  | 30 |  |
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger |  |  | 130.00% |  |
Convertible Note due 2022 | Note price less than 98 percent of stock price times conversion rate [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Convertible, Threshold Trading Days | day |  |  | 5 |  |
Debt Instrument, Convertible, Threshold Consecutive Trading Days | day |  |  | 5 |  |
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger |  |  | 98.00% |  |
Convertible Note due 2024 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Face Amount |  | $ 115,500,000 | $ 115,500,000 |  | 115,500,000
Common Stock, Par or Stated Value Per Share | $ / shares |  | $ 0.001 |  |  |
Debt Instrument, Convertible, Conversion Ratio |  | 115.5001 |  |  |
Debt Conversion, Converted Instrument, Amount |  | $ 1,000 | 1,000 |  |
Debt Instrument, Convertible, Conversion Price | $ / shares |  | $ 8.66 |  |  |
Carrying amount of equity component |  | $ 24,900,000 |  |  |
Debt Instrument, Unamortized Discount |  |  | $ 16,982,000 |  | $ 19,294,000
Debt Instrument, Interest Rate, Stated Percentage |  | 2.00% |  |  |
Convertible Note due 2024 | Stock price greater or equal 130 percent of Note Conversion Price [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Convertible, Threshold Trading Days | day |  |  | 20 |  |
Debt Instrument, Convertible, Threshold Consecutive Trading Days | day |  |  | 30 |  |
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger |  |  | 130.00% |  |
Convertible Note due 2024 | Note price less than 98 percent of stock price times conversion rate [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt Instrument, Convertible, Threshold Trading Days | day |  |  | 5 |  |
Debt Instrument, Convertible, Threshold Consecutive Trading Days | day |  |  | 5 |  |
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger |  |  | 98.00% |  |
Convertible Debt | Convertible Note due 2022 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Fair value of 2022 Notes used to settle 2020 Notes | $ 44,400,000 |  |  |  |

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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 + Details
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