Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2014

Payables and Accruals [Abstract]

Schedule of summary of major components of accrued expenses balance

	Year Ended December 31,
	2013		2014
Corporate legal fees	$	138	$	564
Audit, tax and filing services		454		189
Interest accrued		138		-
Taxes and Delaware fees		450		96
Board fees		-		45
Consulting equity instruments		-		40
Sublicense fees		125		125
Other miscellaneous		10		13
	$	1,315	$	1,072