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Acquisitions - Aggregate Consideration Paid or Payable and Allocation of Net Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2019 | Dec. 31, 2018
Business Acquisition [Line Items] |  |  |
Goodwill | $ 21,909 | $ 34,300 | $ 56,337
Acquisitions 2019 |  |  |
Business Acquisition [Line Items] |  |  |
Cash paid or payable | 50,907 |  |
Value of Quanta common stock issued | 0 |  |
Contingent consideration | 0 | 0 |
Fair value of total consideration transferred or estimated to be transferred | 50,907 |  |
Accounts receivable | 7,912 | 7,912 |
Contract assets | 0 | 0 |
Other current assets | 6,142 | 6,142 |
Property and equipment | 19,371 | 19,371 |
Other assets | 5 | 5 |
Identifiable intangible assets | 7,337 | 7,337 |
Contract liabilities | 0 | 0 |
Other current liabilities | (5,899) | (5,899) |
Deferred tax liabilities, net | (5,870) | (5,870) |
Total identifiable net assets | 28,998 | 28,998 |
Goodwill | 21,909 |  |
Fair value of total consideration transferred or estimated to be transferred | $ 50,907 | $ 50,907 |
Acquisitions 2018 |  |  |
Business Acquisition [Line Items] |  |  |
Cash paid or payable |  |  | 106,804
Value of Quanta common stock issued |  |  | 22,882
Contingent consideration |  |  | 16,471
Fair value of total consideration transferred or estimated to be transferred |  |  | 146,157
Accounts receivable |  |  | 18,405
Contract assets |  |  | 1,905
Other current assets |  |  | 8,484
Property and equipment |  |  | 23,674
Other assets |  |  | 576
Identifiable intangible assets |  |  | 52,364
Contract liabilities |  |  | (175)
Other current liabilities |  |  | (11,205)
Deferred tax liabilities, net |  |  | (4,208)
Total identifiable net assets |  |  | 89,820
Goodwill |  |  | 56,337
Fair value of total consideration transferred or estimated to be transferred |  |  | $ 146,157

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