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v3.20.1

Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
Project and non-project reserves | $ 34,225 | $ 2,326
Employee compensation and benefits | 59,624 | 1,609
Revenue and cost recognition | 33,588 |
Insurance accruals | 19,204 | 962
Net operating losses | 16,400 | 14,855
Lease liabilities | 68,447 | 205
Tax credit carryforwards | 8,969 | 377
Other | 3,318 | 2,240
Valuation allowance | (17,358) | (6,668)
Total deferred tax assets | 226,417 | 15,906
Deferred tax liabilities |  |
Intangible assets | (29,543) | (2,529)
Right of use assets | (63,032) |
Revenue and cost recognition |  | (10,570)
Other | (13,063) | (3,367)
Total deferred tax liabilities | (105,638) | (16,466)
Net deferred tax (liabilities) |  | $ (560)
Net deferred tax assets | $ 120,779 |

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