Stock-Based Compensation and Other Plans (Details 2) (Stock options, USD $)	12 Months Ended			3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 30, 2011 CEO	Dec. 31, 2011 CEO
"Shares Subject to Option "
Balance at the beginning of the period (in shares)	9,107,339	6,099,403	4,627,311
Options granted (in shares)	666,668	4,373,686	2,722,092	1,000,000	1,000,000
Options exercised (in shares)	0	0	(1,250,000)
Options forfeited/expired (in shares)	(659,859)	(1,365,750)
Balance at the end of the period (in shares)	9,114,148	9,107,339	6,099,403
Weighted Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 2.58	$ 3.16	$ 3.29
Options granted (in dollars per share)	$ 0.87	$ 1.76	$ 2.55
Options exercised (in dollars per share)			$ 2.31
Options forfeited/expired (in dollars per share)	$ 3.94	$ 2.51
Balance at the end of the period (in dollars per share)	$ 2.36	$ 2.58	$ 3.16
Additional disclosure
Total intrinsic value of options exercised (in dollars)			$ 2,300,000
Cash received from the cashless exercise of options to cover exercise amount and taxes	0
Remaining average contractual term of options outstanding	3 years 9 months 18 days
Intrinsic value of options outstanding (in dollars)	$ 0
Shares exercisable	6,100,000
Remaining average contractual term of shares exercisable	3 years 4 months 24 days