CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands	Total		Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss), net of taxes	Treasury stock, at cost
Beginning balance at Dec. 31, 2011			$ 62	$ 373,384	$ 840,644	$ 251,980	$ (410,717)
Options exercised, 2014, 435,665 shares; 2013, 1,158,537 shares; 2012, 389,089 shares			0
Conversion of common stock units, 2014, 10,834 shares; 2013, 11,851 shares; 2012, 15,084 shares			0
Conversion of restricted stock units, 2014, 169,444 shares; 2013, 146,930 shares; 2012, 104,152 shares			0
Options exercised and conversion of common stock units and restricted stock units				7,275
Share-based compensation expense				2,476
Net income	103,866				103,866
Cash dividends, 2014, $0.92 per share; 2013, $0.78 per share; 2012, $0.55 per share					(22,541)
Change in net unrealized gains on fixed maturities and equity securities	114,178					114,178
Change in net funded status of pension and other postretirement benefit obligations	931					931
Acquisition of shares, 2014, 190,876 shares; 2013, 173,629 shares; 2012, 915,895 shares							(15,735)
Ending balance at Dec. 31, 2012	1,245,803		62	383,135	921,969	367,089	(426,452)
Options exercised, 2014, 435,665 shares; 2013, 1,158,537 shares; 2012, 389,089 shares			2
Conversion of common stock units, 2014, 10,834 shares; 2013, 11,851 shares; 2012, 15,084 shares			0
Conversion of restricted stock units, 2014, 169,444 shares; 2013, 146,930 shares; 2012, 104,152 shares			0
Options exercised and conversion of common stock units and restricted stock units				22,502
Share-based compensation expense				1,419
Net income	110,893				110,893
Cash dividends, 2014, $0.92 per share; 2013, $0.78 per share; 2012, $0.55 per share					(32,550)
Change in net unrealized gains on fixed maturities and equity securities	(248,410)	[1],[2]				(248,410)
Change in net funded status of pension and other postretirement benefit obligations	3,535	[1]				3,535
Acquisition of shares, 2014, 190,876 shares; 2013, 173,629 shares; 2012, 915,895 shares							(3,889)
Ending balance at Dec. 31, 2013	1,099,305		64	407,056	1,000,312	122,214	(430,341)
Options exercised, 2014, 435,665 shares; 2013, 1,158,537 shares; 2012, 389,089 shares			0
Conversion of common stock units, 2014, 10,834 shares; 2013, 11,851 shares; 2012, 15,084 shares			0
Conversion of restricted stock units, 2014, 169,444 shares; 2013, 146,930 shares; 2012, 104,152 shares			0
Options exercised and conversion of common stock units and restricted stock units				13,906
Share-based compensation expense				1,270
Net income	104,243				104,243
Cash dividends, 2014, $0.92 per share; 2013, $0.78 per share; 2012, $0.55 per share					(39,237)
Change in net unrealized gains on fixed maturities and equity securities	163,564	[1],[2]				163,564
Change in net funded status of pension and other postretirement benefit obligations	(1,177)	[1]				(1,177)
Acquisition of shares, 2014, 190,876 shares; 2013, 173,629 shares; 2012, 915,895 shares							(5,411)
Ending balance at Dec. 31, 2014	$ 1,336,463		$ 64	$ 422,232	$ 1,065,318	$ 284,601	$ (435,752)

[1] All amounts are net of tax.

[2] The pretax amounts reclassified from accumulated other comprehensive income, $10,943 and $22,245, are included in net realized investment gains and losses and the related tax expenses, $3,830 and $7,786, are included in income tax expense in the Consolidated Statements of Operations for the years ended December 31, 2014 and 2013, respectively.