CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Unaudited - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities:
Net income	$ 44,869	$ 53,512
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	64,131	59,016
Change in value of life insurance contracts	124	(1,871)
Allowance for equity funds used during construction	(2,644)	(2,763)
Changes in operating assets and liabilities:
Receivables and unbilled revenue	(18,471)	(52,951)
Accounts payable	18,133	6,712
Other current assets	(1,392)	(4,643)
Other current liabilities	8,762	10,939
Other changes in noncurrent assets and liabilities	5,991	41,837
Net cash provided by operating activities	119,503	109,788
Investing activities:
Utility plant expenditures	(212,856)	(180,442)
Life insurance proceeds	3,491	1,558
Purchase of life insurance contracts	(4,925)	(3,948)
Net cash used in investing activities	(214,290)	(182,832)
Financing activities:
Short-term borrowings	141,000	185,000
Repayment of short-term borrowings	(341,000)	(87,000)
Issuance of long-term debt, net of expenses	299,383	0
Repayment of long-term debt	(12,499)	(2,797)
Advances and contributions in aid of construction	13,630	14,964
Refunds of advances for construction	(5,462)	(6,316)
Repurchase of common stock	(1,496)	(1,359)
Dividends paid	(27,029)	(25,920)
Net cash provided by financing activities	66,527	76,572
Change in cash, cash equivalents, and restricted cash	(28,260)	3,528
Cash, cash equivalents, and restricted cash at beginning of period	95,352	25,935
Cash, cash equivalents, and restricted cash at end of period	67,092	29,463
Supplemental information:
Cash paid for interest (net of amounts capitalized)	19,956	17,287
Income tax refund	0	(1,697)
Supplemental disclosure of non-cash activities:
Accrued payables for investments in utility plant	32,328	31,750
Utility plant contribution by developers	$ 14,807	$ 13,022