CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities:
Net income (loss)	$ 35,044	$ (15,026)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	55,733	50,251
Change in value of life insurance contracts	(2,275)	872
Allowance for equity funds used during construction	(1,392)	(3,319)
Changes in operating assets and liabilities:
Receivables and unbilled revenue	(23,187)	(6,215)
Accounts payable	(4,859)	3,405
Other current assets	(2,581)	(6,759)
Other current liabilities	3,075	(970)
Other changes in noncurrent assets and liabilities	8,092	(2,235)
Net cash provided by operating activities	67,650	20,004
Investing activities:
Utility plant expenditures	(138,522)	(133,537)
Business acquisition, net of cash acquired	(6,451)	(37,655)
Return of investment	1,000	0
Net cash used in investing activities	(143,973)	(171,192)
Financing activities:
Short-term borrowings	125,000	270,000
Repayment of short-term borrowings	(350,000)	(70,000)
Issuance of long-term debt, net of debt issuance costs of $1,064 for 2021 and $0 for 2020	278,936	0
Repayment of long-term debt	(1,272)	(1,293)
Advances and contributions in aid of construction	13,953	12,569
Refunds of advances for construction	(5,722)	(4,341)
Repurchase of common stock	(1,524)	(1,479)
Issuance of common stock	62,603	38,006
Dividends paid	(23,283)	(20,671)
Net cash provided by financing activities	98,691	222,791
Change in cash, cash equivalents, and restricted cash	22,368	71,603
Cash, cash equivalents, and restricted cash at beginning of period	45,129	43,298
Cash, cash equivalents, and restricted cash at end of period	67,497	114,901
Supplemental information:
Cash paid for interest (net of amounts capitalized)	19,554	20,433
Supplemental disclosure of non-cash activities:
Accrued payables for investments in utility plant	53,325	54,049
Utility plant contribution by developers	$ 13,563	$ 13,818