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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:      
Net Income $ 36,543 $ 38,425 $ 33,888
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:      
Depreciation and Amortization 26,799 20,838 17,232
Provision for Deferred Income Taxes (10,989) (13,490) (11,719)
Equity Portion of Allowance for Funds Used During Construction (AFUDC) (1,505) (2,503) (1,997)
Cash Surrender Value of Life Insurance (136) (391) (252)
Stock Compensation Expense 1,338 1,096 637
Changes in Assets and Liabilities:      
Accounts Receivable (742) (2,661) (146)
Unbilled Revenues (208) 118 110
Materials & Supplies (246) 333 (34)
Prepayments 6 (519) 277
Accounts Payable (9,318) 7,137 3,981
Accrued Taxes (1,517) 2,503 (6,595)
Accrued Interest (151) 106 742
Employee Benefit Plans (2,645) (1,377) (1,112)
Unearned Revenue & Advanced Service Fees 75 44 175
Other Assets and Liabilities (4,276) 3,696 866
NET CASH PROVIDED BY OPERATING ACTIVITIES 33,028 53,355 36,053
CASH FLOWS FROM INVESTING ACTIVITIES:      
Utility Plant Expenditures, Including AFUDC of $1,148 in 2021, $1,513 in 2020 and $1,149 in 2019 (79,378) (105,619) (89,125)
NET CASH USED IN INVESTING ACTIVITIES (79,378) (105,619) (89,125)
CASH FLOWS FROM FINANCING ACTIVITIES:      
Redemption of Long-term Debt (52,691) (7,472) (7,343)
Proceeds from Issuance of Long-term Debt 86,595 50,316 78,967
Proceeds from Premium Issuance of Long-term Debt 7,083
Net Short-term Bank Borrowings 11,000 (18,000) (28,500)
Deferred Debt Issuance Expense (994) (148) (769)
Common Stock Issuance Expense (37) (357)
Proceeds from Issuance of Common Stock 3,837 1,230 56,784
Payment of Common Dividends (19,373) (18,178) (16,165)
Payment of Preferred Dividends (120) (120) (132)
Construction Advances and Contributions-Net 11,225 8,578 4,342
NET CASH PROVIDED BY FINANCING ACTIVITIES 39,479 16,169 93,910
NET CHANGES IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH (6,871) (36,095) 40,838
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD 10,404 46,499 5,661
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD 3,533 10,404 46,499
SUPPLEMENTAL DISCLOSURE OF NON-CASH ACTIVITY:      
Utility Plant received as Construction Advances and Contributions 4,750 5,080 7,770
Long-term Debt Deobligation 64 258 130
Cash Paid During the Year for:      
Interest 8,546 7,644 6,938
Interest Capitalized 1,148 1,513 1,149
Income Taxes $ 3,335 $ 2,509 $ 10,339