Financing (Details 7) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Face Value	$ 29,693	$ 9,362
Fair Value	67,023	16,458
Common stock Shares	8,889,345	1,036,429
Debentures 2006 Series [Member]
Face Value	6,087
Fair Value	15,608
Common stock Shares	2,082,642
Debentures 2007 Series [Member]
Face Value	6,900	7,682
Fair Value	16,965	13,115
Common stock Shares	2,294,358	836,428
Debentures 2008 Series [Member]
Face Value	6,468	1,680
Fair Value	15,680	3,343
Common stock Shares	2,113,474	200,001
Debentures 2009 Series [Member]
Face Value	1,778
Fair Value	4,000
Common stock Shares	526,699
Debentures 2010 Series [Member]
Face Value	3,806
Fair Value	7,341
Common stock Shares	972,013
Debentures 2011 Series [Member]
Face Value	2,129
Fair Value	3,465
Common stock Shares	391,105
Debentures 2012 Series [Member]
Face Value	2,525
Fair Value	3,964
Common stock Shares	$ 509,054