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Employee Benefit Plans
 9 Months Ended
Sep. 30, 2020
Compensation And Retirement Disclosure [Abstract]  
Employee Benefit Plans

Note 13.     Employee Benefit Plans

Certain of the Company’s subsidiaries, including certain subsidiaries in Canada, contribute amounts to multiemployer pension and other multiemployer benefit plans and trusts (“MEPPs”), which are recorded as a component of employee wages and salaries within costs of revenue. Contributions are generally based on fixed amounts per hour per employee for employees covered under these plans. Multiemployer plan contribution rates are determined annually and assessed on a “pay-as-you-go” basis based on union employee payrolls. Union payrolls cannot be determined for future periods because the number of union employees employed at a given time, and the plans in which they participate, vary depending upon the location and number of ongoing projects and the need for union resources in connection with those projects. Total consolidated contributions to multiemployer plans, were $25 and $33 during the three months ended September 30, 2020 and 2019, respectively and $71 and $86 during the nine months ended September 30, 2020 and 2019.