Consolidated Statements of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Stockholders' Equity at Period Start (value) at Dec. 31, 2008	$ 1,058,776	$ 992,184	$ 34,093	$ 32,499
Stockholders' Equity at Period Start (shares) at Dec. 31, 2008		34,486,000
Net income (loss)	(2,249)			(2,249)
Total other comprehensive income (loss), net of tax	37,037		37,037
Options exercised (shares)		146,000
Options Exercised (value)	3,168	3,168
Restricted Stock Awards Released (shares)		30,000
Restricted Stock Awards Released (value)	0	0
Issuance of Stock-Based Compensations Awards (shares)		4,000
Issuance of Stock-Based Compensation Awards (value)	254	254
Employee Stock Purchase Plan (shares)		62,000
Employee Stock Purchase Plan (value)	2,934	2,934
Stock-Based Compensation Expense	16,728	16,728
Exchange of Debt for Common Stock (shares)		2,252,000
Exchange Of Debt For Common Stock (value)	123,442	123,442
Issuance of Common Stock (shares)		3,163,000
Issuance of Common Stock (value)	160,424	160,424
Stockholders' Equity at Period End (value) at Dec. 31, 2009	1,400,514	1,299,134	71,130	30,250
Stockholders' Equity at Period End (shares) at Dec. 31, 2009		40,143,000
Net income (loss)	104,770			104,770
Total other comprehensive income (loss), net of tax	(106,104)		(106,104)
Options exercised (shares)		148,000
Options Exercised (value)	5,933	5,933
Restricted Stock Awards Released (shares)		84,000
Restricted Stock Awards Released (value)	0	0
Issuance of Stock-Based Compensations Awards (shares)		5,000
Issuance of Stock-Based Compensation Awards (value)	364	364
Employee Stock Purchase Plan (shares)		51,000
Employee Stock Purchase Plan (value)	2,843	2,843
Stock-Based Compensation Expense	18,743	18,743
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	1,232	1,232
Stockholders' Equity at Period End (value) at Dec. 31, 2010	1,428,295	1,328,249	(34,974)	135,020
Stockholders' Equity at Period End (shares) at Dec. 31, 2010	40,431,000	40,431,000
Net income (loss)	(510,157)			(510,157)
Total other comprehensive income (loss), net of tax	(2,186)		(2,186)
Options exercised (shares)		42,000
Options Exercised (value)	832	832
Restricted Stock Awards Released (shares)		271,000
Restricted Stock Awards Released (value)	0	0
Issuance of Stock-Based Compensations Awards (shares)		12,000
Issuance of Stock-Based Compensation Awards (value)	469	469
Employee Stock Purchase Plan (shares)		99,000
Employee Stock Purchase Plan (value)	3,793	3,793
Stock-Based Compensation Expense	15,942	15,942
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	(635)	(635)
Repurchase of common stock (shares)		(823,000)
Repurchase of common stock (value)	(29,428)	(29,428)
Stockholders' Equity at Period End (value) at Dec. 31, 2011	$ 906,925	$ 1,319,222	$ (37,160)	$ (375,137)
Stockholders' Equity at Period End (shares) at Dec. 31, 2011	40,032,000	40,032,000