STATEMENT OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock Member	Additional Paid In Capital Member	Retained Earnings Member	Accumulated Other Comprehensive Income Member	Treasury Stock Member
Beginning Balance at Dec. 31, 2011		$ 48,879	$ 143,192	$ 1,163,925	$ (65,131)	$ (85,890)
Net earnings	113,844			113,844
Other Comprehensive Income (Loss), Net of Tax	9,623				9,623
Dividends paid				(16,392)
Restricted Stock			(6,233)			6,233
Stock options exercised, net		311	6,431			10,077
Other			(414)			414
Share-based compensation			8,907			521
Repurchase of common stock						(25,705)
Ending Balance at Dec. 31, 2012		49,190	151,883	1,261,377	(55,508)	(94,350)
Net earnings	137,981			137,981
Other Comprehensive Income (Loss), Net of Tax	80,767				80,767
Dividends paid				(18,377)
Restricted Stock			(2,127)			5,796
Stock options exercised, net			(5,728)			34,451
Other			(330)			330
Share-based compensation			6,920			430
Ending Balance at Dec. 31, 2013	1,552,705	49,190	150,618	1,380,981	25,259	(53,343)
Net earnings	113,338			113,338
Other Comprehensive Income (Loss), Net of Tax	(153,670)				(153,670)
Dividends paid				(25,013)
Restricted Stock			(722)			3,155
Stock options exercised, net			311			45,049
Other			(430)			430
Share-based compensation			8,266			234
Repurchase of common stock						(65,220)
Ending Balance at Dec. 31, 2014	$ 1,478,433	$ 49,190	$ 158,043	$ 1,469,306	$ (128,411)	$ (69,695)