Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating activities:
Net income	$ 23,234	$ 21,407
Adjustments to reconcile net income to cash flows from operating activities:
Depreciation and amortization including regulatory items and other	40,815	45,698
Pension and other postretirement benefit costs, net of contributions	195	(15,109)
Deferred income taxes and unamortized investment tax credit, net	14,314	9,337
Allowance for equity funds used during construction	(2,766)	(2,212)
Stock compensation expense	2,905	999
Non-cash (gain)/loss on derivatives	2,346	3,300
Other	84
Cash flows impacted by changes in:
Accounts receivable and accrued unbilled revenues	5,152	21,171
Fuel, materials and supplies	3,214	(301)
Prepaid expenses, other current assets and deferred charges	(8,779)	(351)
Accounts payable and accrued liabilities	(20,078)	(26,130)
Asset retirement obligations	(86)
Interest, taxes accrued and customer deposits	11,474	10,832
Other liabilities and other deferred credits	10,327	5,456
Net cash provided by operating activities	82,351	74,097
Investing activities:
Capital expenditures - regulated	(67,968)	(106,295)
Capital expenditures and other investments - non-regulated	(557)	(950)
Restricted cash	(1)
Net cash used in investing activities	(68,526)	(107,245)
Financing activities:
Proceeds from issuance of common stock, net of issuance costs	3,551	2,878
Net short-term borrowings	5,500	53,000
Dividends	(22,856)	(22,671)
Other	(154)	(172)
Net cash provided by (used in) financing activities	(13,959)	33,035
Net decrease in cash and cash equivalents	(134)	(113)
Cash and cash equivalents at beginning of period	1,753	2,105
Cash and cash equivalents at end of period	$ 1,619	$ 1,992