Summary of Significant Accounting Policies - (Details) - USD ($)		3 Months Ended		9 Months Ended
	Jun. 30, 2015	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Significant Accounting Policies [Line Items]
Highly liquid investments, original maturity period				3 months
Operating loss carry forwards for federal income tax	$ 231,000,000
Operating loss carry forwards for state income tax	$ 103,400,000
Income tax benefit (expense)		$ 1,871,772	$ (3,327)	$ 5,056,772	$ (42,182)
Liability for uncertain tax positions		0		$ 0
Common stock equivalents excluded from the diluted per share calculation			26,759,915	27,668,571	26,759,915
New Jersey Division of Taxation [Member]
Significant Accounting Policies [Line Items]
Income tax benefit (expense)		1,900,000		$ 5,100,000
Net operating loss		30,300,000		66,200,000
Research and development credits		$ 200,000		$ 1,500,000
Minimum [Member]
Significant Accounting Policies [Line Items]
Net operating loss carry forwards expiration year	2016
Maximum [Member]
Significant Accounting Policies [Line Items]
Net operating loss carry forwards expiration year	2035