Schedule II - Valuation and Qualifying Accounts (Details) - USD ($)		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period		$ 8,303,701	$ 7,076,565	$ 3,258,269
Charged to costs and expenses		3,814,311	3,402,468	5,164,943
Charged to other accounts		40,800	32,400	26,400
Net accounts written off	[1]	(3,785,972)	(2,207,732)	(1,373,047)
Balance at end of period		8,372,840	8,303,701	7,076,565
Deferred Bad Debt Expense [Member]
Regulatory Asset [Line Items]
Regulatory assets		$ 2,100,000	$ 1,800,000	$ 3,800,000

[1] Net of recovery of amounts previously written off.