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Schedule II - Valuation and Qualifying Accounts (Details) - Reserve for Uncollectible Accounts [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Movement in Reserve [Roll Forward]    
Balance at beginning of year $ 855,000 $ 655,000
Additions - charged to cost and expenses 431,851 377,685
Additions - recoveries 39,023 52,527
Deductions 470,874 230,212
Balance at end of year $ 855,000 $ 855,000