CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 29,305	$ 30,118
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation and Amortization	17,253	15,595
Provision for Deferred Income Taxes	(11,801)	(10,991)
Equity Portion of Allowance for Funds Used During Construction (AFUDC)	(1,356)	(1,789)
Cash Surrender Value of Life Insurance	(97)	(166)
Stock Compensation Expense	1,033	820
Changes in Assets and Liabilities:
Accounts Receivable	(2,459)	(3,659)
Unbilled Revenues	(2,009)	(1,640)
Materials and Supplies	(44)	683
Prepayments	(1,141)	(1,002)
Accounts Payable	(13,103)	1,554
Accrued Taxes	2,550	3,007
Accrued Interest	(943)	(94)
Employee Benefit Plans	1,187	1,234
Unearned Revenue & Advanced Service Fees	139	100
Other Assets and Liabilities	124	3,520
NET CASH PROVIDED BY OPERATING ACTIVITIES	18,638	37,290
CASH FLOWS FROM INVESTING ACTIVITIES:
Utility Plant Expenditures, Including AFUDC of $1,020 in 2020 and $1,082 in 2020	(61,245)	(70,785)
NET CASH USED IN INVESTING ACTIVITIES	(61,245)	(70,785)
CASH FLOWS FROM FINANCING ACTIVITIES:
Redemption of Long-term Debt	(28,655)	(6,391)
Proceeds from Issuance of Long-term Debt	21,595	10,319
Net Short-term Bank Borrowings	48,000	16,500
Deferred Debt Issuance Expense	(35)	(41)
Common Stock Issuance Expense		(37)
Proceeds from Issuance of Common Stock	885	921
Payment of Common Dividends	(14,294)	(13,418)
Payment of Preferred Dividends	(90)	(90)
Construction Advances and Contributions-Net	10,079	7,420
NET CASH PROVIDED BY FINANCING ACTIVITIES	37,485	15,183
NET CHANGES IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(5,122)	(18,312)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	10,404	46,499
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	5,282	28,187
SUPPLEMENTAL DISCLOSURE OF NON-CASH ACTIVITY:
Utility Plant received as Construction Advances and Contributions	4,279	3,747
Cash Paid During the Year for:
Interest	7,091	5,834
Interest Capitalized	1,020	1,082
Income Taxes	$ 3,235	$ 1,783