Stockholders' Equity (Details) (USD $)	0 Months Ended					3 Months Ended		9 Months Ended									9 Months Ended
	Apr. 30, 2014	Mar. 11, 2014	Jan. 15, 2014	Sep. 16, 2013	Feb. 20, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014 Common Stock		Sep. 30, 2014 Additional Paid-in-Capital		Sep. 30, 2014 Accumulated Other Comprehensive Income	Dec. 31, 2013 Accumulated Other Comprehensive Income	Sep. 30, 2014 Treasury Stock		Sep. 30, 2014 Accumulated Deficit
Increase (Decrease) in Stockholders' Equity
Balance								$ (17,872,150)			$ 1,063,566		$ 831,155,925		$ 897,807	$ 897,807	$ (1,552,382)		$ (849,437,066)
Balance (in shares)								106,356,558			106,356,558						165,906
Net loss attributable to the Company						(9,351,034)	(15,895,372)	(81,331,176)		(33,792,515)									(81,331,176)
Stock based compensation								2,367,251			1,069		2,366,182
Stock based compensation (in shares)											106,813
Public offerings, common stock, net								153,949,378	[1]		365,024	[1]	153,584,354	[1]
Public offerings, common stock, net (in shares)	22,600,000	3,902,440	10,000,000	18,600,000	18,910,000			23,832,038			36,502,440	[1]
Exercise of warrants								101,785,107	[2]		239,184	[2]	101,886,304	[2]			(340,381)	[2]
Exercise of warrants (in shares)											23,918,429	[2]					86,391	[2]
Stock dividend											253		129,595						(129,848)
Stock dividend (in shares)											25,348
Shares issued for acquisition								4,000,000			5,305		3,994,695
Shares issued for acquisition											530,504
Conversion of preferred stock											55,217
Conversion of preferred stock (in shares)											5,521,676
Conversion of preferred stock													1,163,143
Stock option exercises								(273,062)			5,188		400,613				(678,863)
Stock option exercises (in shares)											518,845						109,930
Balance						$ 163,843,708		$ 163,843,708			$ 1,734,806		$ 1,094,680,811		$ 897,807	$ 897,807	$ (2,571,626)		$ (930,898,090)
Balance (in shares)						173,480,613		173,480,613			173,480,613						362,227

[1] As a result of the January, March and April 2014 public offerings discussed further below, the Company received net proceeds of $165,722,618 of which $11,773,240 in value was ascribed to the warrants issued in the January 2014 public offering. The associated warrants have been separately valued and classified as a liability on the accompanying consolidated balance sheet.

[2] Pursuant to the exercise of warrants, additional paid-in capital was increased by $18,102,213 from the issuance of 23,832,038 shares of common stock. Additionally, paid-in capital was increased by $83,444,573 and warrant liability was reduced by $83,444,573 (the fair value of the warrants on the exercise date).