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Fair Value Measurements - Additional Information (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 27, 2020 | Jun. 28, 2020 | Mar. 29, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Fair value | $ 0 |  |  |  | $ 0 | $ 1,153,000 | $ 2,554,000
Operating Lease, Impairment Loss |  |  |  |  | 3,427,000 | 0 | 0
Intangible asset impairment charges | 0 | $ 0 | $ 19,571,000 | $ 0 | 19,571,000 | 0 | 0
Fair Value, Measurements, Recurring |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Credit losses |  |  |  |  | 0 | 0 | 0
Credit recoveries |  |  |  |  | 0 | 0 | $ 0
GVi Ventures, Inc. |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Fair value | 0 |  |  |  | 0 | $ 0 |
GVi Ventures, Inc. | Minimum [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Contingent consideration, low range | 0 |  |  |  | 0 |  |
GVi Ventures, Inc. | Maximum [Member] |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |
Contingent consideration, high range | $ 2,500,000 |  |  |  | $ 2,500,000 |  |

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- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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