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Divestitures - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Feb. 04, 2019 | Jun. 30, 2019 | Jul. 01, 2018 | Jun. 30, 2019 | Jul. 01, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Gain (loss) on disposition of assets |  | $ 0 | $ 0 | $ 2,739 | $ 0
Notes Receivable |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Receivable with imputed interest, face amount | $ 10,500 |  |  |  |
Financing receivables, payments to be received in next twelve months |  | 2,100 |  | 2,100 |
Notes receivable, fair value disclosure | 7,600 |  |  |  |
Financing receivable, net |  | 8,000 |  | 8,000 |
Financing receivables, payments to be received in year two |  | 2,100 |  | 2,100 |
Financing receivables, payments to be received in year three |  | 2,100 |  | 2,100 |
Financing receivables, payments to be received in year four |  | 2,100 |  | 2,100 |
Financing receivables, payments to be received in year five |  | 2,100 |  | 2,100 |
Notes Receivable | Accounts Receivable |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Financing receivable, net |  | 2,000 |  | 2,000 |
Notes Receivable | Other Assets |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Financing receivable, net |  | 6,000 |  | 6,000 |
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Disposal group, including discontinued operation, consideration | 12,600 |  |  |  |
Gain (loss) on disposition of assets | $ 2,700 |  |  |  |
Disposal group, including discontinued operation, assets |  | $ 9,700 |  | $ 9,700 |

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