CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Current Assets:
Cash and Cash Equivalents	$ 8.1	$ 8.7	$ 11.2
Accounts Receivable, net	58.0	49.8	85.9
Accrued Revenue	42.1	38.4	64.2
Exchange Gas Receivable	6.8	11.1	4.0
Gas Inventory	0.4	0.8	0.4
Prepayments and Other	12.7	11.7	11.8
Total Current Assets	128.1	120.5	177.5
Utility Plant:
Gas	586.8	576.8	529.7
Electric	409.9	408.4	393.7
Common	35.8	35.5	34.6
Construction Work in Progress	56.9	59.9	39.4
Total Utility Plant	1,089.4	1,080.6	997.4
Less: Accumulated Depreciation	276.3	271.7	259.2
Net Utility Plant	813.1	808.9	738.2
Other Noncurrent Assets:
Regulatory Assets	98.2	99.6	106.2
Other Assets	13.5	9.8	13.2
Total Other Noncurrent Assets	111.7	109.4	119.4
TOTAL ASSETS	1,052.9	1,038.8	1,035.1
Current Liabilities:
Accounts Payable	27.0	33.3	34.8
Short-Term Debt	47.9	42.0	32.0
Long-Term Debt, Current Portion	17.1	17.1	3.7
Regulatory Liabilities	18.8	15.6	39.4
Energy Supply Obligations	13.9	14.6	12.6
Environmental Obligations	0.7	1.3	3.4
Capital Lease Obligations	3.1	3.1	0.5
Interest Payable	6.1	3.4	6.3
Other Current Liabilities	11.4	13.9	7.4
Total Current Liabilities	146.0	144.3	140.1
Noncurrent Liabilities:
Retirement Benefit Obligations	126.8	124.4	121.4
Deferred Income Taxes	93.1	87.5	84.7
Cost of Removal Obligations	72.3	70.1	65.7
Regulatory Liabilities	3.3	8.1
Capital Lease Obligations	10.4	11.0	8.2
Environmental Obligations	2.0	1.5	2.0
Other Noncurrent Liabilities	3.5	3.6	3.8
Total Noncurrent Liabilities	311.4	306.2	285.8
Capitalization:
Long-Term Debt, Less Current Portion	305.4	305.5	325.9
Stockholders' Equity:
Common Equity (Authorized: 25,000,000 and Outstanding:14,043,280, 13,966,150 and 13,991,430 Shares)	238.9	237.5	236.0
Retained Earnings	51.0	45.1	47.1
Total Common Stock Equity	289.9	282.6	283.1
Preferred Stock	0.2	0.2	0.2
Total Stockholders' Equity	290.1	282.8	283.3
Total Capitalization	$ 595.5	$ 588.3	$ 609.2
Commitments and Contingencies (Notes 6 & 7)
TOTAL LIABILITIES AND CAPITALIZATION	$ 1,052.9	$ 1,038.8	$ 1,035.1

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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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.