Subsequent Events (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 07, 2014 Subsequent Event [Member]	Jan. 03, 2014 Subsequent Event [Member] EOGA [Member]	Jan. 01, 2014 Subsequent Event [Member] EOGA [Member]
Subsequent Event [Line Items]
Percent of outstanding shares acquired						100.00%
Subsequent Event, Cash Portion of Purchase Price Paid for Acquisition					$ 5,250,000
Common stock, shares issued (in shares)					94,354
Subsequent Event, Shares Issued in Exercise of Warrants				1,277,250
Common Stock Issued With Warrants Exercise, Exercise Price per Share				$ 1.21
Proceeds from Warrant Exercises	$ 323,000	$ 421,000	$ 4,793,000	$ 1,500,000