Stockholders' Equity (Schedule of Warrants Activity) (Details)	1 Months Ended					12 Months Ended
	Jun. 30, 2011	Jul. 31, 2009	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 3.97 [Member] Warrant [Member]		Dec. 31, 2013 3.00 [Member] Derivative Instrument Warrants [Member]		Dec. 31, 2013 2.50 [Member] Warrant [Member]		Dec. 31, 2013 1.89 [Member] Derivative Instrument Warrants [Member]		Dec. 31, 2013 1.63 [Member] Derivative Instrument Warrants [Member]		Dec. 31, 2013 3.50 [Member] Derivative Instrument Warrants [Member]		Dec. 31, 2013 1.61 [Member] Warrant [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Common Shares Underlying Warrants	371,423		5,620,128	5,620,128	5,573,544	100,778	[1]	705,354	[2]	2,572,775	[1]	500,000	[2]	1,323,214	[2]	371,423	[2]	46,584	[1]
Issue Date						Mar. 01, 2007		Mar. 01, 2009		Jul. 01, 2009		Apr. 01, 2010		Jul. 01, 2010		Jun. 01, 2011		Mar. 30, 2012
Exercisable Date						Mar. 01, 2007		Sep. 01, 2009		Jan. 01, 2010		Oct. 01, 2010		Jan. 01, 2011		Jun. 01, 2011		Mar. 30, 2012
Warrants, Exercise price	3.50					3.97		3.00		2.50		1.89		1.63		3.50		1.61
Expiration Date	Jun. 15, 2016	Jan. 28, 2015				Mar. 31, 2017		Sep. 30, 2014		Jan. 31, 2015		Oct. 31, 2015		Jan. 31, 2017		Jun. 15, 2016		Mar. 31, 2022

[1] These warrants to purchase common stock are classified as equity.

[2] These warrants to purchase common stock are classified as derivative liabilities. The fair value of these liabilities (see Note 3 - Fair Value Measurements) is remeasured at the end of every reporting period and the change in fair value is reported in the consolidated statements of operations as other income (expense).