CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and Cash Equivalents	$ 5.8	$ 8.7
Accounts Receivable, net	52.9	49.8
Accrued Revenue	49.5	38.4
Exchange Gas Receivable	8.3	11.1
Gas Inventory	0.6	0.8
Prepayments and Other	14.5	11.7
Total Current Assets	131.6	120.5
Utility Plant:
Gas	629.5	576.8
Electric	437.9	408.4
Common	35.8	35.5
Construction Work in Progress	70.2	59.9
Utility Plant	1,173.4	1,080.6
Less: Accumulated Depreciation	290.0	271.7
Net Utility Plant	883.4	808.9
Other Noncurrent Assets:
Regulatory Assets	104.1	99.6
Other Assets	9.1	9.8
Total Other Noncurrent Assets	113.2	109.4
TOTAL ASSETS	1,128.2	1,038.8
Current Liabilities:
Accounts Payable	32.4	33.3
Short-Term Debt	81.9	42.0
Long-Term Debt, Current Portion	16.8	17.1
Regulatory Liabilities	10.4	15.6
Energy Supply Obligations	12.0	14.6
Environmental Obligations	0.4	1.3
Capital Lease Obligations	3.0	3.1
Other Current Liabilities	20.0	17.3
Total Current Liabilities	176.9	144.3
Noncurrent Liabilities:
Retirement Benefit Obligations	149.0	124.4
Deferred Income Taxes, net	97.9	87.5
Cost of Removal Obligations	77.0	70.1
Regulatory Liabilities	2.6	8.1
Capital Lease Obligations	8.3	11.0
Environmental Obligations	1.5	1.5
Other Noncurrent Liabilities	5.1	3.6
Total Noncurrent Liabilities	341.4	306.2
Capitalization:
Long-Term Debt, Less Current Portion	316.8	305.5
Stockholders' Equity:
Common Equity (Outstanding 14,065,230 and 13,991,430 Shares)	240.7	237.5
Retained Earnings	52.2	45.1
Total Common Stock Equity	292.9	282.6
Preferred Stock	0.2	0.2
Total Stockholders' Equity	293.1	282.8
Total Capitalization	609.9	588.3
Commitments and Contingencies (Note 8)
TOTAL LIABILITIES AND CAPITALIZATION	$ 1,128.2	$ 1,038.8

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.