Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net loss	$ (4.9)	$ (11.5)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization, net	9.9	11.5
Share-based compensation	3.0	3.2
Net realized gains on investments	(43.8)	(16.6)
Changes in operating assets and liabilities:
Deferred policy acquisition costs	7.7	(4.7)
Accrued investment income and other assets	2.0	(3.4)
Postretirement and pension benefits	(9.1)	(30.6)
Other liabilities and due to/from affiliates, net	(14.8)	(17.4)
Reinsurance recoverable on losses and loss expenses payable and prepaid reinsurance premiums	(1.9)	2.5
Losses and loss expenses payable	98.9	112.6
Unearned premiums	12.7	17.9
Excess Tax Benefit from Share-based Compensation, Operating Activities	1.3	(0.1)
Federal income taxes	(0.3)	(1.4)
Net cash provided by operating activities	60.7	62.0
Cash flows from investing activities:
Purchases of fixed maturities available-for-sale	(409.2)	(414.6)
Purchases of equity securities available-for-sale	(104.1)	(77.9)
Purchases of other invested assets	(1.0)	(1.0)
Maturities, calls and pay downs of fixed maturities available-for-sale	192.1	177.1
Sales of fixed maturities available-for-sale	156.3	138.0
Sales of equity securities available-for-sale	171.3	113.9
Sales of other invested assets available-for-sale	0.8	0.7
Net cash provided by (used in) investing activities	6.2	(63.8)
Cash flows from financing activities:
Proceeds from issuance of common stock	6.0	4.2
Payments to acquire treasury stock	(0.2)	(0.2)
Payment of dividends	(12.7)	(12.4)
Excess Tax Benefit from Share-based Compensation, Financing Activities	0.0	0.1
Proceeds from (Repayments of) Debt	0.0	21.5
Net cash (used in) provided by financing activities	(6.9)	13.2
Net increase in cash and cash equivalents	60.0	11.4
Cash and cash equivalents at beginning of period	51.1	58.1
Cash and cash equivalents at end of period	111.1	69.5
Supplemental disclosures:
Interest paid (affiliates $0.6 and $0.6, respectively)	$ 4.3	$ 4.0