Series C Convertible Preferred Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Series C Convertible Preferred Stock installments
Dividend, Installment Payments	$ 2,810
Dividend, Cash	1,780
Dividend, Stock	1,030
Dividend, Stock (shares)	80,169
Principal, Installment Payments	23,340
Principal, Cash	15,560
Principal, Stock	7,780
Principal, Stock (shares)	600,309
Total, Installment Payments	26,150
Total, Cash	17,340
Total, Stock	$ 8,810
Total, Stock (shares)	680,478