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Business Combinations - Assets and Liabilities Allocation (Details) - USD ($) $ in Thousands | 1 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Nov. 21, 2019
Assets Acquired |  |
Goodwill | $ 66,134 |
Avedro |  |
Assets Acquired |  |
Cash |  | $ 49,101
Accounts receivable |  | 13,113
Inventory |  | 33,339
Prepaid expenses and other current assets |  | 2,522
Restricted cash |  | 551
Property and equipment |  | 1,489
Intangible assets | 385,200 | 385,200
Goodwill | 66,100 | 66,134
Liabilities Assumed |  |
Accounts payable |  | 7,056
Accrued liabilities |  | 6,776
Deferred revenue |  | 1,389
Debt |  | 22,496
Deferred revenue, non-current |  | 43
Deferred tax liability |  | 75,938
Fair value of net assts acquired |  | 437,751
Step-up fair value of inventory |  | $ 29,000
Amortization expense of the step up fair value of inventory acquired in acquisition | $ 4,000 |

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