Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Shares	3,103,300	2,227,447
Gross Proceeds	$ 6,234
February 25, 2011 [Member]
Class of Stock [Line Items]
Shares	95,334
Gross Proceeds	1,430
May 31, 2011 [Member]
Class of Stock [Line Items]
Shares	28,200
Gross Proceeds	423
June 27, 2011 [Member]
Class of Stock [Line Items]
Shares	37,500
Gross Proceeds	563
July 12, 2011 [Member]
Class of Stock [Line Items]
Shares	1,667
Gross Proceeds	25
December 2, 2011 [Member]
Class of Stock [Line Items]
Shares	4,000
Gross Proceeds	40
February 10, 2012 [Member]
Class of Stock [Line Items]
Shares	65,000
Gross Proceeds	325
February 14, 2012 [Member]
Class of Stock [Line Items]
Shares	80,000
Gross Proceeds	400
March 7, 2012 [Member]
Class of Stock [Line Items]
Shares	20,000
Gross Proceeds	100
March 15, 2012 [Member]
Class of Stock [Line Items]
Shares	35,000
Gross Proceeds	175
March 22, 2012 [Member]
Class of Stock [Line Items]
Shares	5,000
Gross Proceeds	25
April 9, 2012 [Member]
Class of Stock [Line Items]
Shares	20,000
Gross Proceeds	100
April 24, 2012 [Member]
Class of Stock [Line Items]
Shares	4,000
Gross Proceeds
June 28, 2012 [Member]
Class of Stock [Line Items]
Shares	48,000
Gross Proceeds	600
July 6, 2012 [Member]
Class of Stock [Line Items]
Shares	411,600
Gross Proceeds	5,145
January 27, 2014 [Member]
Class of Stock [Line Items]
Shares	631,346
Gross Proceeds	4,735
November 19, 2014 [Member]
Class of Stock [Line Items]
Shares	193,865
Gross Proceeds	$ 1,816