Series A Convertible Preferred Stock (Details Textual) - Series A Convertible Preferred Stock [Member] - Equity Component [Domain] - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Nov. 02, 2012	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2012	Dec. 31, 2014
Preferred Stock [Line Items]
Proceeds from Issuance of Private Placement	$ 4,500					$ 88
Preferred stock, shares outstanding	1,380,362	10,296		10,296			9,993
Issuance Of Warrants To Purchase Of Common Stock	2,760,724
Preferred Stock, Dividend Rate, Percentage	6.00%
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 3.85
Warrant Expiration Term	5 years
Preferred Stock Convertible Conversion Price	$ 3.26
Preferred Stock Dividends, Shares		152	144	303	286