Accrued Expenses and Other Current Liabilities (Severance and Restructuring Accruals) (Details) (USD $)	3 Months Ended	0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended
	Dec. 31, 2013	Sep. 17, 2014	Sep. 30, 2014	Dec. 10, 2014	Dec. 31, 2014
Chief Operating Officer
Severance and restructuring accruals:
Estimated charge related to separation agreement	$ 500,000
Chief Executive Officer
Severance and restructuring accruals:
Estimated charge related to separation agreement			800,000
Resignation period following replacement selection		15 days
Continuation of base salary period		602 days
Continuation of benefits, period		18 months
Outplacement services, period		1 year
Outplacement services, value		15,000
Chief Administrative Officer
Severance and restructuring accruals:
Estimated charge related to separation agreement					600,000
Continuation of base salary period				518 days
Continuation of benefits, period				18 months
Outplacement services, period				1 year
Outplacement services, value				15,000
Chief Counsel and Secretary
Severance and restructuring accruals:
Estimated charge related to separation agreement					500,000
Continuation of base salary period				476 days
Continuation of benefits, period				18 days
Outplacement services, period				1 year
Outplacement services, value				$ 15,000