Stockholders' Equity (Initial Public Offering) (Details) (IPO [Member], USD $)	12 Months Ended
	Dec. 31, 2008	Dec. 31, 2007	Dec. 31, 2006	Aug. 31, 2006
Equity Offering [Line Items]
Number of units issued			3,000,000
Share price (in dollars per share)			$ 5.50
Proceeds from issuance or sale of equity			$ 14,000,000
Common Stock [Member]
Equity Offering [Line Items]
Unit conversion			1
Class A Warrant [Member]
Equity Offering [Line Items]
Number of units issued		3,290,894
Unit conversion			1
Exercise price of warrants (in dollars per share)		0.25
Number of warrants exercised		3,098,382
Percent of warrants outstanding		94.10%
Proceeds from warrant exercises		20,000,000
Class B Warrant [Member]
Equity Offering [Line Items]
Unit conversion			2
Exercise price of warrants (in dollars per share)				11.00
Number of warrants exercised	98,800	11,000
Proceeds from warrant exercises	1,090,000	121,000
IPO Warrants [Member]
Equity Offering [Line Items]
Number of units issued			300,000
Share price (in dollars per share)			$ 6.60
Proceeds from warrant exercises	$ 500,000	$ 2,000,000