Stockholders' Equity (Details) (USD $)	0 Months Ended
	Oct. 04, 2012	May 04, 2013	Feb. 02, 2013	Apr. 28, 2012	Oct. 03, 2012 Common Stock Outstanding Before Reverse Stock Split [Member]	Oct. 04, 2012 Common Stock Outstanding After Reverse Stock Split [Member]	May 04, 2013 Series A Preferred Stock [Member]	Jul. 09, 2012 Series A Preferred Stock [Member]
Class of Stock [Line Items]
Reverse stock split ratio	0.25
Common stock, shares outstanding (in shares)		30,547,000	30,531,000	30,439,000	122,000,000	30,500,000
Preferred stock, shares outstanding (in shares)		1,000	1,000	0				1,000
Class of warrant or right, outstanding (in shares)		6,100,000
Conversion exercise price per share (in dollars per share)							$ 3.40