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Stockholders' Equity (Details Textual) (USD $)	1 Months Ended	3 Months Ended		12 Months Ended	3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended
	Dec. 23, 2003	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013 Common Stock [Member]	Mar. 31, 2014 Performance Shares [Member]	Dec. 31, 2013 Performance Shares [Member]	Mar. 31, 2014 Plan 2014 [Member] Subsequent Event [Member]	Mar. 31, 2014 Restricted Stock [Member]	Dec. 31, 2010 Restricted Stock [Member]	Mar. 31, 2014 Restricted Stock Award [Member]	Mar. 31, 2013 Restricted Stock Award [Member]	Mar. 31, 2014 2011 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, Issued in Settlement for Termination of Certain Rights in Stock Purchase Agreement				152,241
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized							1,000,000					1,783,292
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant												274,285
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period												10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares					366,126	907,336
Allocated Share-based Compensation Expense		$ 1,045,387	$ 480,306		$ 836,000	$ 422,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights									Ten percent of the issued restricted common stock vested on December31, 2011. The remaining ninety percent of the restricted shares were modified on January31, 2013 to vest on the earlier of the first dosing in the pivotal clinical study for its lead drug candidate, or 50% on January31, 2014 and 50% on January31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$ 5.21	$ 1.73						$ 5.75
Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award					the Company modified 907,336 existing time-vested and performance stock options by lowering the exercise price to $2.81. Additionally, the Company modified the vesting terms for its unvested performance stock options and unvested restricted stock to vest on the earlier of the first dosing in the pivotal clinical study for its lead drug candidate, or 50% on January31, 2014 and 50% on January31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period								0	112,720
Class Of Warrant Or Right Issued	20,467
Class Of Warrant Or Right Exercise Price Of Warrants Issued	$ 12.21
Class Of Warrant Or Right Amended Expiration Date	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Exercise Price, Beginning Balance						$ 2.81
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		31,500								31,500	234,137
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total		$ 812,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		11 months 23 days

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