Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 42.0	$ 44.4
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization, net	6.6	9.5
Share-based compensation	2.7	3.6
Net realized gains on investments	(17.6)	(15.7)
Changes in operating assets and liabilities:
Deferred policy acquisition costs	(12.6)	(6.9)
Accrued investment income and other assets	0.7	(2.7)
Postretirement and pension benefits	(8.0)	(7.4)
Other liabilities and due to/from affiliates, net	(11.1)	(18.8)
Reinsurance recoverable on losses and loss expenses payable and prepaid reinsurance premiums	(1.3)	1.9
Losses and loss expenses payable	1.4	9.8
Unearned premiums	37.8	19.9
Federal income taxes	1.0	0.1
Net cash provided by operating activities	41.6	37.7
Cash flows from investing activities:
Purchases of fixed maturities, available-for-sale	(325.8)	(226.6)
Purchases of equity securities, available-for-sale	(95.7)	(60.5)
Purchases of other invested assets	(1.5)	(5.2)
Maturities, calls and pay downs of fixed maturities, available-for-sale	180.8	122.7
Sales of fixed maturities, available-for-sale	135.4	77.8
Sales of equity securities, available-for-sale	76.6	74.1
Sales of other invested assets	0.5	0.5
Net additions of property and equipment	0	0.2
Net cash used in investing activities	(29.7)	(17.0)
Cash flows from financing activities:
Proceeds from issuance of common stock	2.4	2.3
Payments to acquire treasury stock	(0.1)	(0.1)
Payment of dividends	(12.3)	(12.1)
Payments of credit facility issue costs	0	(0.5)
Proceeds from Issuance of Long-term Debt	0	85.0
Repayments of Long-term Debt	0	(100.0)
Net Cash Used In Financing Activities	(10.0)	(25.4)
Net increase (decrease) in cash and cash equivalents	1.9	(4.7)
Cash and cash equivalents at beginning of period	80.3	59.0
Cash and cash equivalents at end of period	82.2	54.3
Supplemental disclosures:
Interest paid (affiliates $0.5 and $0.5, respectively)	3.9	7.3
Income Taxes Paid	$ 1.0	$ 0.6