Equity Transactions (Details) (USD $)	0 Months Ended		12 Months Ended
	Oct. 23, 2012	Aug. 01, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jul. 08, 2011
Equity Transactions [Abstract]
Stock issued, underwritten public offering, value	$ 23,000,000	$ 20,400,000	$ 21,476,815	$ 6,722,939
Stock issued, underwritten public offering, value (in shares)	9,200,000	5,600,000
Reverse stock split conversation ratio			1-for-7 reverse stock split
Common stock per share value (in dollars per share)	$ 2.50	$ 3.57
Common stock additional share purchase (in shares)		6,400,000
Exercise price of common stock (in dollars per share)		$ 4.48	$ 30
Net proceeds from issuance of common stock	$ 21,500,000	$ 18,900,000	$ 21,476,815	$ 18,939,619	$ 0
Common stock, shares outstanding (in shares)	30,600,000		30,607,916	21,302,327
Warrants per share value (in dollars per share)		$ 0.07
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