CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Unaudited - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities:
Net income	$ 10,477	$ 19,663
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	42,582	39,328
Change in value of life insurance contracts	817	(1,208)
Allowance for equity funds used during construction	(1,621)	(1,658)
Changes in operating assets and liabilities:
Receivables and unbilled revenue	(14,431)	(35,533)
Accounts payable	6,417	3,242
Other current assets	(4,207)	(7,048)
Other current liabilities	(4,168)	(747)
Other changes in noncurrent assets and liabilities	13,705	19,687
Net cash provided by operating activities	49,571	35,726
Investing activities:
Utility plant expenditures	(133,900)	(108,712)
Life insurance proceeds	2,054	450
Purchase of life insurance contracts	(2,054)	(1,216)
Net cash used in investing activities	(133,900)	(109,478)
Financing activities:
Short-term borrowings	111,000	140,000
Repayment of short-term borrowings	(61,000)	(47,000)
Repayment of long-term debt	(12,264)	(2,407)
Advances and contributions in aid of construction	8,385	10,312
Refunds of advances for construction	(3,498)	(4,430)
Repurchase of common stock	(1,364)	(1,236)
Dividends paid	(18,017)	(17,278)
Net cash provided by financing activities	23,242	77,961
Change in cash, cash equivalents, and restricted cash	(61,087)	4,209
Cash, cash equivalents, and restricted cash at beginning of period	95,352	25,935
Cash, cash equivalents, and restricted cash at end of period	34,265	30,144
Supplemental information:
Cash paid for interest (net of amounts capitalized)	17,344	15,932
Income tax refund	0	(1,697)
Supplemental disclosure of non-cash activities:
Accrued payables for investments in utility plant	30,696	28,494
Utility plant contribution by developers	$ 8,653	$ 7,212