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Labor Union Contracts	9 Months Ended
Labor Union Contracts	Sep. 30, 2021
Risks and Uncertainties [Abstract]
Labor Union Contracts	Labor Union Contracts As of September 30, 2021, approximately 43% of our employees were represented by the Communication Workers of America ("CWA") or the International Brotherhood of Electrical Workers ("IBEW"). There are no collective bargaining agreements that are scheduled to expire over the twelve month period ending September 30, 2022. We believe relations with our employees continue to be generally good.