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Deferred Revenue and Other Contract Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 27, 2020 | Mar. 28, 2020 | Sep. 26, 2020 | Dec. 28, 2019
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Business Combination, Deferred Revenue |  |  | $ 10,064 |
Deferred revenue |  |  | 31,588 | $ 13,998
Accrued rebates and allowances |  |  | 11,389 | 8,436
Accrued customer reimbursements |  |  | 5,294 | 5,739
Total deferred revenue and other contract liabilities |  |  | 48,271 | 28,173
Less: Non-current portion of deferred revenue |  |  | (3,729) | (2,234)
Deferred revenue and other contract liabilities - current |  |  | $ 44,542 | $ 25,939
Connected Care Acquisition [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Business Combination, Deferred Revenue |  | $ 9,500 |  |
TNI Medical AG Acquisition [Member] |  |  |  |
Revenue Recognition, Multiple-deliverable Arrangements [Line Items] |  |  |  |
Business Combination, Deferred Revenue | $ 600 |  |  |

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