Income Taxes Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Deferred Tax Assets and Liabilities

At December 31, 2016 and 2015, the estimated deferred income tax assets and liability were comprised of the following:

	12/31/2016			12/31/2015
	(in thousands)
Deferred tax assets:
Net operating loss carryforwards	$	57,327		$	57,177
Stock—based compensation	2,863			6,706
Development costs	26,805			20,101
Other	1,939			2,108
Net deferred tax assets	88,934			86,092
Valuation allowance	(88,934		)	(86,092		)
Deferred tax assets, net	$	—		$	—

Schedule of Effective Income Tax Rate Reconciliation

The following is a reconciliation of the federal statutory tax rate to the Company’s effective tax rate:

	Year ended December 31,
	2016		2015		2014
Tax provision at federal statutory tax rate	35.0	%	35.0	%	35.0	%
New York State income taxes, net	—	%	(0.1	)%	—	%
Non-deductible interest	(0.3	)%	(1.2	)%	(11.3	)%
Permanent items	(3.5	)%	(2.5	)%	1.8	%
Change in valuation allowance	(31.2	)%	(31.4	)%	(25.5	)%
Effective tax rate	—	%	(0.2	)%	—	%