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Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 | Aug. 01, 2019 | Jun. 14, 2019
--- | --- | --- | --- | ---
Assets Acquired |  |  |  |
Goodwill | $ 352,242 | $ 353,193 |  |
Fibrovein Holdings Limited |  |  |  |
Assets Acquired |  |  |  |
Trade receivables |  |  | $ 277 |
Inventories |  |  | 843 |
Prepaid expenses and other assets |  |  | 49 |
Goodwill |  |  | 4,975 |
Total assets acquired |  |  | 16,572 |
Liabilities Assumed |  |  |  |
Trade payables |  |  | (53) |
Accrued expenses |  |  | (29) |
Deferred income tax liabilities |  |  | (1,890) |
Total liabilities assumed |  |  | (1,972) |
Total net assets acquired |  |  | 14,600 |
Fibrovein Holdings Limited | Developed technology |  |  |  |
Assets Acquired |  |  |  |
Intangible assets |  |  | $ 10,428 |
Brightwater |  |  |  |
Assets Acquired |  |  |  |
Trade receivables |  |  |  | $ 55
Inventories |  |  |  | 349
Property and equipment |  |  |  | 409
Other long-term assets |  |  |  | 30
Goodwill |  |  |  | 17,492
Total assets acquired |  |  |  | 50,628
Liabilities Assumed |  |  |  |
Trade payables |  |  |  | (58)
Accrued expenses |  |  |  | (261)
Other long-term liabilities |  |  |  | (1,522)
Deferred income tax liabilities |  |  |  | (4,148)
Total liabilities assumed |  |  |  | (5,989)
Total net assets acquired |  |  |  | 44,639
Brightwater | Developed technology |  |  |  |
Assets Acquired |  |  |  |
Intangible assets |  |  |  | 31,960
Brightwater | Customer Lists |  |  |  |
Assets Acquired |  |  |  |
Intangible assets |  |  |  | 83
Brightwater | Trademarks |  |  |  |
Assets Acquired |  |  |  |
Intangible assets |  |  |  | $ 250

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