Preferred Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Preferred Stock authorized	7,500	7,500
Preferred Stock issued	53	53
Preferred Stock outstanding	53	53
Preferred Stock stated value (per share)	$ 0.0001	$ 0.0001
Accrued dividends	$ 25	$ 20
Conversion price below fair value of common stock, per share	$ 1.16
Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock authorized	5,000,000
Series B-1 Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock authorized	100
Preferred Stock issued	0
Preferred Stock outstanding	0
Series A-2 Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock authorized	7,500
Preferred Stock issued	53
Preferred Stock outstanding	53
Preferred Stock stated value (per share)	$ 7,500
Conversion of preferred stock, price per share	$ 3.00
Convertible preferred stock, shares issued upon conversion	2,500
Preferred stock, cumulative dividend percentage rate (per annum)	5.00%
Accrued dividends	$ 25
Series D Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock authorized	4,000
Preferred Stock issued	0
Preferred Stock outstanding	0