Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (USD $) In Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated (Deficit)	Accumulated Other Comprehensive Loss
Balances at Dec. 31, 2012	$ 2,198,280	$ 903	$ 2,601,254	$ (396,156)	$ (7,721)
Balances, Shares at Dec. 31, 2012		90,342
Net income	12,270	0	0	12,270	0
Other comprehensive loss	(3,531)	0	0	0
Stock Repurchased During Period, Shares		(655)
Stock Issued During Period, Value, Other		(7)
Stock Repurchased During Period, Value	(12,557)
Adjustments to Additional Paid in Capital, Other			(12,550)
Common stock issued/cancelled under long-term incentive plans and director fees and options, net	1,372	1	1,371	0
Common stock issued/cancelled under long-term incentive plans and director fees and options, net, shares		56
Balances at Mar. 31, 2013	$ 2,195,834	$ 897	$ 2,590,075	$ (383,886)	$ (11,252)
Balances, Shares at Mar. 31, 2013		89,743