Shareholders' Equity (Details) (USD $)	3 Months Ended		12 Months Ended							1 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended		0 Months Ended				3 Months Ended	12 Months Ended						3 Months Ended		12 Months Ended								12 Months Ended					0 Months Ended
	Jun. 30, 2012	Sep. 30, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jan. 27, 2012	Jan. 20, 2011	Nov. 30, 2010	Mar. 12, 2002	Aug. 31, 1991 Series B Preferred Stock [Member]	Dec. 31, 2012 Series B Preferred Stock [Member]	Dec. 31, 2012 Series D Preferred Stock [Member]	May 10, 2005 Series E Preferred Stock [Member]	Dec. 31, 2012 Series E Preferred Stock [Member]	Dec. 31, 2011 Series E Preferred Stock [Member]	Sep. 24, 2012 Series C Preferred Stock [Member]	Dec. 31, 2012 Series C Preferred Stock [Member]	Dec. 31, 2011 Series C Preferred Stock [Member]	Dec. 31, 2010 Series C Preferred Stock [Member]	Sep. 30, 2010 Treasury stock [Member]	Dec. 31, 2011 Treasury stock [Member]	Dec. 31, 2010 Treasury stock [Member]	Dec. 31, 2011 Treasury stock [Member] Series E Preferred Stock [Member]	Dec. 31, 2012 Warrant [Member]	Dec. 31, 2011 Warrant [Member]	Dec. 31, 2010 Warrant [Member]	Sep. 30, 2010 Actavis [Member]	Sep. 30, 2010 Perry Partners International Inc [Member]	Dec. 31, 2011 Restricted Stock [Member]	Dec. 31, 2012 Stock options [Member]	Dec. 31, 2011 Stock options [Member]	Dec. 31, 2010 Stock options [Member]	Dec. 31, 2011 Second Offering [Member] Series E Preferred Stock [Member]	Mar. 12, 2002 Conversion Threshold, 15% [Member]	Mar. 12, 2002 Conversion Threshold, Greater than 15% and Less Than 50% [Member]	Nov. 29, 2010 Conversion Threshold, Revised, 4.99% [Member]	Dec. 31, 2011 Exercise Price 1.52 Per Share [Member] Warrant [Member]	Dec. 31, 2011 Exercise Price 1.35 Per Share [Member] Warrant [Member]	Dec. 31, 2011 Exercise Price 1.52 Per Share, Second Offering [Member] Warrant [Member]	Dec. 31, 2011 Exercise Price 1.35 Per Share, Second Offering [Member] Warrant [Member]	Dec. 31, 2011 Exercise Price 1.52 Per Share, Third Offering [Member] Warrant [Member]	Mar. 03, 2010 Convertible Debt [Member]	Mar. 03, 2010 Convertible Debt [Member] Warrant [Member]
Class of Stock [Line Items]
Preferred stock, authorized (in shares)			1,000,000	1,000,000													550	600
Conversion of preferred stock, shares															36,260								(473,200)															50,000	3,726,743	3,726,743	479,802
Preferred stock, par value (in dollars per share)			$ 0.01	$ 0.01									$ 100
Exercise Price			0.01					1.15																1.52	1.52	1.52
Net proceeds from issuance of common stock and warrants			$ 0	$ 0	$ 11,643,897								$ 6,900,000							$ 79,149
Stock issued during period, shares, conversion of convertible securities														50	1,339,800	50																	1,813,000				429,802	20,796	2,861,932	2,411,334	450,598
Warrants issued to extinguish debt, in shares																																										7,750,000	7,750,000
Common stock, exercise price, in dollars per share																																										$ 1.35	$ 1.35
Estimated warrant liability fair value					5,509,893
Proceeds from exercise of warrants			0	653,299	0																																653,299
Preferred stock, redemption amount																50,000
Consecutive Trading Days														20 days
Consecutive Trading Days, Common Stock, Price Minimum														$ 6.00
Preferred stock, shares outstanding (in shares)											130			22,740	36,260		550	600	550
Preferred stock, liquidation preference per share											$ 100		$ 100
Votes per stock											1
Dividends declared, share, preferred stock purchase right for outstanding common stock									1
Preferred Stock, Conversion Trigger, Percentage Ownership Change																																		15.00%	50.00%	4.99%
Actual, Cumulative Change in Ownership Among Stockholders With At Least 5% Ownership Interest, Three Year Rolling Period						44.00%
Preferred Stock, Conversion Amount, Per One Thousandth Of A Share												$ 30
Share based compensation expense, shares	176,468
Purchase of treasury shares (in shares)			36,448	36,448	3,462,124
Common stock, shares issued		7,407,407	87,543,781	87,367,313																							11,200,000	3,333,330
Proceeds from stock options exercised			0	2,641,950	79,148
Stock issued during period, shares, restricted stock award, net of forfeitures		65,218	176,468	34,880	112,148																								34,880
Shares Paid for Tax Withholding for Share Based Compensation																													36,448
Stock issued during period, shares, restricted stock award, forfeited		56,234	0	0	46,930																	3,333,330
Accelerated share repurchases, final price paid per share		$ 0.90
Payments for repurchase of common stock		3,000,000	0	125,381	62,280
Stock Issued During Period, Shares, Treasury Stock Reissued																				59,375
Issuance of common stock, shares										150,000			69,000
Convertible preferred stock, shares issued upon conversion											20
Issuance of common stock		7,777,777			19,415,482																						11,760,000
Preferred stock, redemption price per share																									$ 1.52												$ 1.52	$ 1.35		$ 1.35
Increase in warrant liability fair value					7,961,939
Options exercised, shares																					995,064									0	1,685,014	59,375
Warrant liability, fair value					$ 13,471,832		$ 16,193,037