CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) (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, 2013			$ 64	$ 407,056	$ 1,000,312	$ 122,214	$ (430,341)
Options exercised, 2015, 43,298 shares; 2014, 196,840 shares			0
Conversion of common stock units, 2015, 8,293 shares; 2014, 10,834 shares			0
Conversion of restricted stock units, 2015, 157,539 shares; 2014, 65,730 shares			0
Options exercised and conversion of common stock units and restricted stock units				6,065
Share-based compensation expense				340
Net income	28,366				28,366
Cash dividends, 2015, $0.25 per share; 2014, $0.23 per share					(9,784)
Change in net unrealized gains and losses on fixed maturities and equity securities	77,408	[1],[2]				77,408
Change in net funded status of pension and other postretirement benefit obligations	0	[1]				0
Acquisition of shares, 2015, 23,500 shares; 2014, 136,976 shares							(3,867)
Ending balance at Mar. 31, 2014	1,197,833		64	413,461	1,018,894	199,622	(434,208)
Beginning balance at Dec. 31, 2014	1,336,463		64	422,232	1,065,318	284,601	(435,752)
Options exercised, 2015, 43,298 shares; 2014, 196,840 shares			0
Conversion of common stock units, 2015, 8,293 shares; 2014, 10,834 shares			0
Conversion of restricted stock units, 2015, 157,539 shares; 2014, 65,730 shares			0
Options exercised and conversion of common stock units and restricted stock units				10,882
Share-based compensation expense				1,965
Net income	34,275				34,275
Cash dividends, 2015, $0.25 per share; 2014, $0.23 per share					(10,676)
Change in net unrealized gains and losses on fixed maturities and equity securities	37,578	[1],[2]				37,578
Change in net funded status of pension and other postretirement benefit obligations	0	[1]				0
Acquisition of shares, 2015, 23,500 shares; 2014, 136,976 shares							(716)
Ending balance at Mar. 31, 2015	$ 1,409,771		$ 64	$ 435,079	$ 1,088,917	$ 322,179	$ (436,468)

[1] All amounts are net of tax.

[2] The pretax amounts reclassified from accumulated other comprehensive income (loss), $5,834 and $1,699, are included in net realized investment gains and losses and the related tax expenses, $2,042 and $595, are included in income tax expense in the Consolidated Statements of Operations for the three months ended March 31, 2015 and 2014, respectively.