Equity (Details Textual) (USD $)	0 Months Ended		1 Months Ended	0 Months Ended	3 Months Ended	12 Months Ended	0 Months Ended	12 Months Ended
	Aug. 06, 2014	Nov. 14, 2013	Nov. 25, 2013	Jun. 10, 2013	Mar. 31, 2014	Dec. 31, 2014	Mar. 06, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Stock issued (in shares)			150,000	851,000	150,000
Stock Issued During Period, Percentage Of Discount Based On 4 June 2013 Closing Price				10.00%
Warrants Issued In Offering, Right To Acquire Common Shares Per Warrant				0.5
Warrants Issued In Offering, Exercise Price				$ 7.20
Warrant Issued In Offering, Percentage Of Premium Based On 4 June 2013 Closing Price				15.00%
Proceeds from Issuance or Sale of Equity, Total	$ 5,900,000	$ 10,500,000		$ 4,450,000
Payments of Stock Issuance Costs				400,000
Proceeds From Issuance Or Sale Of Equity Gross	6,500,000
Shares Issued, Price Per Share				$ 5.70
Proceeds from Lines of Credit						4,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights						$ 13.06		16.20	$ 22.00
Ros Acquisition Offshore [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Lines of Credit					$ 4,000,000		$ 4,000,000
Common Stock [Member]
Schedule of Equity Method Investments [Line Items]
Stock issued (in shares)	1,143,000					1,143,000		850,877
Shares Issued, Price Per Share	$ 5.70
August 2014 Warrants [Member]
Schedule of Equity Method Investments [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	571,500
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 7.12