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Commitments	12 Months Ended
Commitments	Dec. 31, 2021
Commitments [Abstract]
Commitments	8. Commitments Based on its capital budget, the Company anticipates construction and acquisition expenditures for 2022 and 2023 of approximately $44,000 and $50,000, respectively, exclusive of any acquisitions not yet approved. The Company plans to finance ongoing capital expenditures with internally-generated funds, borrowings against the Company’s line of credit, proceeds from the issuance of common stock under its dividend reinvestment and direct stock purchase and sale plan and ESPP, potential common stock or debt issues and customer advances and contributions. The Company entered into a consent order agreement with the Pennsylvania Department of Environmental Protection in December 2016 after the Company determined it exceeded the action level for lead as established by the Lead and Copper Rule, or LCR, issued by the U.S. Environmental Protection Agency. The Company did not have an exceedance in any subsequent compliance test. Under the agreement, the Company successfully completed its commitment to exceed the LCR replacement schedule by replacing all the known company-owned lead service lines within four years from the agreement. Any additional company-owned lead service lines that are discovered will be replaced and included in utility plant but are not expected to have a material impact on the financial position of the Company. The Company was granted approval by the PPUC, to modify its tariff to include the cost of the annual replacement of up to 400 lead customer-owned service lines over nine years from the agreement. The tariff modification allows the Company to replace customer-owned service lines at its own initial cost. The Company will record the costs as a regulatory asset to be recovered in future base rates to customers, over a four-year period. The cost for the customer-owned lead service line replacements was approximately $1,351 and $1,204 through December 31, 2021 and 2020, respectively, and is included as a regulatory asset. Based on its experience, the Company estimates that lead customer-owned service lines replacements will cost $1,400. This estimate is subject to adjustment as more facts become available. As of December 31, 2021, approximately 32% of the Company’s full time employees are under union contract. The current contract was ratified in October 2020 and expires on April 30, 2023. The Company is involved in certain legal and administrative proceedings before various courts and governmental agencies concerning utility service and other matters. The Company expects that the ultimate disposition of these proceedings will not have a material effect on the Company’s financial position, results of operations and cash flows.