Stockholders' Equity and Employee Stock Option Plans Stock Award Activity (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 31, 2013
Stock Award Activity [Abstract]
Number of Shares Available for Grant, Opening Balance	4,575,855	13,467,582	13,047,736	15,467,434
Options and SARS, Outstanding, Number, opening balance	4,104,849	3,939,315	3,103,472	5,505,404
Options and SARS, Outstanding opening balance, Weighted Average Exercise Price,	$ 4.13	$ 6.08	$ 8.71
Number Of Shares Available For Grant, Options ans SARS Granted	(468,000)	(1,785,728)	(1,883,388)
Options and SARS, Grants in Period	468,000	1,785,728	1,883,388
Options and SARS, Grants in Period, Weighted Average Exercise Price	$ 2.46	$ 2.34	$ 3.21
Number of shares available for grant, RSU granted	(2,191,535)	(702,665)	(700,987)
Number Of Shares Available For Grant, Options and SARS Canceled	1,970,662	1,620,194	1,047,545
Options and SARS, Forfeitures in Period	(1,970,662)	(1,620,194)	(1,047,545)
Options and SARS, Forfeitures in Period, Weighted Average Exercise Price	$ 4.70	$ 6.89	$ 8.73
Number of shares available for grant, RSU canceled	1,265,195	471,867	315,817
Options and SARS, Exercises in Period, Shares	(5,395)
Options and SARS, Exercises in Period, Weighted Average Exercise Price	$ 3.17
Unissued shares returned to plan		(15,542,434)
1998 Directors Plan shares expired		(75,000)	(60,000)
Number of Additional Shares Authorized		7,122,039	1,700,859
Number of Shares Available for Grant, Ending Balance	5,152,177	4,575,855	13,467,582	15,467,434
Options and SARS, Outstanding, Number, Closing balance	2,596,792	4,104,849	3,939,315	5,505,404
Options and SARS, Outstanding ending balance, Weighted Average Exercise Price	$ 3.40	$ 4.13	$ 6.08
Stockholders' Equity and Employee Stock Option Plans (Textual) [Abstract]
Options, Exercises in Period, Total Intrinsic Value	$ 3,000	$ 0	$ 0