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v3.20.4

Income Taxes - Summary of Net Deferred Tax Assets and (Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred income tax assets: |  |
Self insurance reserves | $ 4,091 | $ 4,458
Contract loss reserves | 703 | 642
Stock-based awards | 1,300 | 1,164
Bonus | 7,554 | 4,904
Operating lease liabilities | 5,715 | 5,850
Non-U.S. operating loss | 3,601 | 5,499
Other | 7,250 | 3,439
Total deferred income tax assets before valuation allowances | 30,214 | 25,956
Less: valuation allowances | (2,566) | (2,508)
Total deferred income tax assets | 27,648 | 23,448
Deferred income tax liabilities: |  |
Property and equipment — tax over book depreciation | (34,439) | (32,220)
Intangible assets — tax over book amortization | (1,960) | (1,856)
Right-of-use operating lease assets | (5,702) | (5,850)
Non-U.S. deferred income tax liabilities | (1,322) | (2,280)
Other | (2,564) | (2,187)
Total deferred income tax liabilities | (45,987) | (44,393)
Net deferred income taxes | $ (18,339) | $ (20,945)

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