Equity Transactions (Details) (USD $)	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jul. 08, 2011
Subsequent Event [Line Items]
Stock issued, underwritten public offering, value		$ 20,400,000
Stock issued underwritten public offering (in shares)		5,600,000
Reverse stock split conversation ratio	1-for-7
Common stock, share purchase, Maximum (in shares)		6,400,000
Warrants per share value (in dollars per share)		$ 0.07
Exercise price of common stock (in dollars per share)		$ 4.48
Net proceeds from the issuance of common shares	0	18,900,000	18,943,119
Common stock, shares authorized (in shares)	250,000,000	250,000,000		175,000,000
Series A preferred stock, shares authorized (in shares)	25,000	25,000		15,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Stock issued, underwritten public offering, value	23,000,000
Stock issued underwritten public offering (in shares)	9,200,000
Warrants per share value (in dollars per share)	$ 2.50
Net proceeds from the issuance of common shares	$ 21,400,000