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v3.19.3.a.u2

Risk Concentration (Details) | 12 Months Ended
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Dec. 31, 2019 employee
Labor Agreements |
Number of employees | 6,600
Number of employees engaged through contract labor providers | 700
Unionized Employees | Workforce Subject to Collective Bargaining |
Labor Agreements |
Percentage of concentration | 47.00%

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