Annual report pursuant to Section 13 and 15(d)

Income Taxes (Schedule of Credit Carryforward Amounts) (Details)

v2.4.0.6
Income Taxes (Schedule of Credit Carryforward Amounts) (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
1998 [Member]
Dec. 31, 2012
1999 [Member]
Dec. 31, 2012
2000 [Member]
Dec. 31, 2012
2001 [Member]
Dec. 31, 2012
2002 [Member]
Dec. 31, 2012
2003 [Member]
Dec. 31, 2012
2004 [Member]
Dec. 31, 2012
2005 [Member]
Dec. 31, 2012
2006 [Member]
Dec. 31, 2012
2007 [Member]
Dec. 31, 2012
2008 [Member]
Dec. 31, 2012
2009 [Member]
Dec. 31, 2012
2010 [Member]
Dec. 31, 2012
2011 [Member]
Dec. 31, 2012
2012 [Member]
Tax Credit Carryforward [Line Items]                                  
Expiration dates     2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
U.S. Net Operating Loss Carryforwards $ 80,891,792 $ 74,100,000 $ 17,142,781          $ 1,282,447 $ 337,714 $ 1,237,146 $ 3,246,062 $ 3,127,238 $ 2,863,443 $ 2,826,656 $ 13,753,769 $ 5,425,105 $ 1,904,744 $ 27,744,687
R&D credit carryforwards $ 6,546,049 $ 7,610,672 $ 1,173,387 $ 130,359 $ 71,713 $ 39,128 $ 5,350 $ 2,905 $ 22,861 $ 218,332 $ 365,541 $ 342,898 $ 531,539 $ 596,843 $ 1,094,449 $ 1,950,744