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Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net income $ 8,888 $ 8,189
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 4,973 4,372
Stock-based compensation 158 121
Decrease in deferred income taxes (64) (72)
Other 62 38
Changes in assets and liabilities:    
(Increase) decrease in accounts receivable and unbilled revenues (1,069) 443
(Increase) decrease in recoverable income taxes (1) 68
Increase in materials and supplies, prepaid expenses, prepaid pension cost, regulatory and other assets (5,993) (4,471)
Increase in accounts payable, accrued compensation and benefits, accrued expenses, deferred employee benefits, regulatory liabilities, and other deferred credits 4,052 3,415
Increase (decrease) in accrued interest 7 (1)
Net cash provided by operating activities 11,013 12,102
CASH FLOWS FROM INVESTING ACTIVITIES:    
Utility plant additions, including debt portion of allowance for funds used during construction of $291 in 2022 and $320 in 2021 (19,004) (16,043)
Net cash used in investing activities (19,004) (16,043)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Customers' advances for construction and contributions in aid of construction 2,590 1,204
Repayments of customer advances (635) (476)
Proceeds of long-term debt issues 13,674 23,910
Repayments of long-term debt (42,994) (20,575)
Changes in cash overdraft position (1,746) (1,263)
Issuance of common stock 44,851 1,044
Dividends paid (5,106) (4,899)
Net cash provided by (used in) financing activities 10,634 (1,055)
Net change in cash, cash equivalents, and restricted cash 2,643 (4,996)
Cash, cash equivalents, and restricted cash at beginning of period 1 5,002
Cash and cash equivalents at end of period 2,644 6
Cash paid during the period for:    
Interest, net of amounts capitalized 2,132 2,016
Income taxes $ 0 $ 217
Supplemental schedule of non-cash investing and financing activities:    
Accounts payable includes $5,796 in 2022 and $5,166 in 2021 for the construction of utility plant.