Stockholders' Equity and Employee Stock Option Plans Stock Award Activity (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013
Stock Award Activity [Abstract]
Number of Shares Available for Grant, Opening Balance	13,467,582	13,047,736	11,420,522	15,467,434
Options and SARS, Outstanding, Number, opening balance	3,939,315	3,103,472	4,275,648	5,505,404
Options and SARS, Outstanding opening balance, Weighted Average Exercise Price,	$ 6.08	$ 8.71	$ 8.55
Number Of Shares Available For Grant, Options ans SARS Granted	(1,785,728)	(1,883,388)	313,750
Options and SARS, Grants in Period	1,785,728	1,883,388	313,750
Options and SARS, Grants in Period, Weighted Average Exercise Price	$ 2.34	$ 3.21	$ 8.26
Number of shares available for grant, RSU granted	(702,665)	(700,987)	(1,381,070)
Number Of Shares Available For Grant, Options and SARS Canceled	1,545,194	1,047,545	981,365
Options and SARS, Forfeitures in Period	(1,545,194)	(1,047,545)	(981,365)
Options and SARS, Forfeitures in Period, Weighted Average Exercise Price	$ 7.22	$ 8.73	$ 8.64
Number of shares available for grant, RSU canceled	471,867	315,817	480,571
Options and SARS, Exercises in Period, Shares	0	0	(504,561)
Options and SARS, Exercises in Period, Weighted Average Exercise Price		$ 0	$ 7.15
Unissued shares returned to plan	(15,542,434)	0	(190,406)
1998 Directors Plan shares expired	(75,000)	(60,000)	(10,000)
Number of Additional Shares Authorized	7,122,039	1,700,859	1,679,692
Number of Shares Available for Grant, Ending Balance	4,650,855	13,467,582	13,047,736	15,467,434
Options and SARS, Outstanding, Number, Closing balance	4,104,849	3,939,315	3,103,472	5,505,404
Options and SARS, Outstanding ending balance, Weighted Average Exercise Price	$ 4.13	$ 6.08	$ 8.71
Stockholders' Equity and Employee Stock Option Plans (Textual) [Abstract]
Options, Exercises in Period, Total Intrinsic Value	$ 0	$ 0	$ 1.2