CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating activities:
Net income	$ 10,710	$ 11,420
Adjustments to reconcile net income to net cash:
Depreciation and amortization	32,701	31,652
Change in value of life insurance contracts	(336)	50
Changes in operating assets and liabilities:
Receivables and unbilled revenue	(561)	(7,511)
Accounts payable	4,745	1,458
Other current assets	(4,760)	(1,014)
Other current liabilities	355	3,664
Other changes in noncurrent assets and liabilities	16,209	8,630
Net cash provided by operating activities	59,063	48,349
Investing activities:
Utility plant expenditures	(116,155)	(75,827)
Life insurance proceeds	495	0
Purchase of life insurance contracts	(1,065)	(214)
Change in restricted cash	(653)	46
Net cash used in investing activities	(117,378)	(75,995)
Financing activities:
Short-term borrowings	103,100	52,500
Repayment of short-term borrowings	(61,615)	(5,000)
Proceeds from long-term debt, net of issuance costs of $177 for 2016, $0 for 2015	49,823	50
Repayment of long-term debt	(2,463)	(2,554)
Advances and contributions in aid of construction	11,463	6,921
Refunds of advances for construction	(3,472)	(3,316)
Dividends paid	(16,532)	(16,027)
Net cash provided by financing activities	80,304	32,574
Change in cash and cash equivalents	21,989	4,928
Cash and cash equivalents at beginning of period	8,837	19,587
Cash and cash equivalents at end of period	30,826	24,515
Supplemental information:
Cash paid for interest (net of amounts capitalized)	13,572	12,664
Supplemental disclosure of non-cash activities:
Accrued payables for investments in utility plant	25,397	21,890
Utility plant contribution by developers	$ 7,198	$ 3,246